docs: 更新README文档，突出项目功能亮点

- 新增"功能亮点"部分，重点展示已完成的核心功能
  - 智能数据分析：月度/年度报表、详细分析、多维度统计
  - 预算管理系统：多层级预算、实时监控、灵活配置
  - 数据安全保障：备份加密、离线优先、隐私保护
  - 现代化设计：Material 3、深色模式、响应式布局
- 更新主要特性，标注预算管理为"基本完成"
- 更新v1.5版本历史，记录崩溃修复和功能优化
- 优化文档结构，提升可读性和专业度

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/settings.local.json

@@ -0,0 +1,12 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(./gradlew:*)",
+      "Bash(git push:*)",
+      "Bash(git branch:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)"
+    ],
+    "deny": []
+  }
+}

.idea/AndroidProjectSystem.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidProjectSystem">
+    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
+  </component>
+</project>

.idea/inspectionProfiles/Project_Default.xml

@@ -49,6 +49,9 @@
       <option name="composableFile" value="true" />
       <option name="previewFile" value="true" />
     </inspection_tool>
+    <inspection_tool class="PreviewParameterProviderOnFirstParameter" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+    </inspection_tool>
     <inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
       <option name="previewFile" value="true" />

CLAUDE.md

@@ -0,0 +1,117 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## 项目概述
+
+轻记账是一个使用 Kotlin 和 Jetpack Compose 开发的 Android 记账应用，采用 MVVM 架构。项目强调隐私保护，完全离线运行。
+
+## 常用命令
+
+### 构建和运行
+```bash
+./gradlew build              # 构建项目
+./gradlew assembleDebug      # 构建调试 APK
+./gradlew assembleRelease    # 构建发布 APK
+./gradlew installDebug       # 安装调试版本到设备
+./gradlew clean             # 清理构建产物
+```
+
+### 测试相关
+```bash
+./gradlew test              # 运行单元测试
+./gradlew connectedAndroidTest  # 运行设备测试
+```
+
+## 架构概览
+
+### MVVM 架构分层
+- **Model 层**: Room 数据库实体 (`model/` 目录下的 BookkeepingRecord, Category, Member, Settings)
+- **Data 层**: DAO 接口和 Repository 模式实现数据访问
+- **ViewModel 层**: 每个功能模块独立的 ViewModel (HomeViewModel, AnalysisViewModel 等)
+- **View 层**: Jetpack Compose UI，包含 screens、components 和 dialogs
+
+### 核心数据流
+1. UI 层通过 ViewModel 发起数据请求
+2. ViewModel 调用 Repository 获取数据
+3. Repository 通过 DAO 访问 Room 数据库
+4. 数据通过 Flow/StateFlow 响应式传递回 UI
+
+### 数据库架构
+- **主数据库**: BookkeepingDatabase (当前版本 5)
+- **核心表**: bookkeeping_records, categories, members, settings
+- **关键关系**: records 通过 memberId 关联 members 表
+- **迁移策略**: 使用 Room 的 Migration 机制处理版本升级
+
+### 导航架构
+使用 Jetpack Navigation Compose，主要页面：
+- HomeScreen: 主页记账列表
+- AnalysisScreen: 数据分析图表
+- AddRecordScreen: 添加/编辑记录
+- CategoryManagementScreen: 分类管理
+- MemberManagementScreen: 成员管理
+- SettingsScreen: 设置页面
+
+## 关键技术决策
+
+### UI 框架
+- 完全使用 Jetpack Compose 构建 UI
+- Material 3 设计系统，支持深色/浅色主题
+- 自定义主题色功能通过 ColorThemeDialog 实现
+
+### 数据可视化
+- 使用 MPAndroidChart 实现图表功能
+- ChartManager 统一管理图表样式和行为
+- 支持饼图和折线图两种展示方式
+
+### 文件导入导出
+- Apache POI 处理 Excel 文件
+- OpenCSV 处理 CSV 文件
+- FileUtils 提供统一的文件操作接口
+
+### 图标系统
+- 所有图标使用 Material Icons 和自定义矢量图标
+- CategoryIcon 和 MemberIcon 枚举管理图标映射
+- 支持动态图标选择和预览
+
+## 开发注意事项
+
+### 分支策略
+- master: 稳定主分支
+- develop: 开发分支
+- feature/*: 功能开发
+- release/*: 版本发布
+- hotfix/*: 紧急修复
+
+### 提交规范
+使用约定式提交: `<type>: <description>`
+- feat: 新功能
+- fix: 修复 bug
+- docs: 文档更新
+- style: 代码格式
+- refactor: 代码重构
+- perf: 性能优化
+- test: 测试相关
+- build: 构建相关
+
+### 重要功能模块
+
+#### 月度记账开始日期 (Settings 中的 monthStartDay)
+- 支持自定义每月记账的开始日期 (1-31)
+- 影响月度统计和分析的日期范围计算
+- 默认值为 1 (每月 1 日开始)
+
+#### 加密功能 (EncryptionUtils)
+- 预留的备份加密功能接口
+- 使用 AES 加密算法
+- 目前尚未集成到备份功能中
+
+#### 默认数据初始化
+- 首次启动时自动创建默认分类
+- 包含常用的收入和支出分类
+- 可通过 insertDefaultCategories() 查看默认分类列表
+
+### 性能考虑
+- 使用 Room 的 Flow 实现数据的响应式更新
+- 图表数据计算在 ViewModel 中异步处理
+- 大量数据导入时使用批量插入优化性能

LICENSE

@@ -1,158 +1,73 @@
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-Creative Commons is not a party to its public licenses. Notwithstanding, Creative Commons may elect to apply one of its public licenses to material it publishes and in those instances will be considered the “Licensor.” Except for the limited purpose of indicating that material is shared under a Creative Commons public license or as otherwise permitted by the Creative Commons policies published at creativecommons.org/policies, Creative Commons does not authorize the use of the trademark “Creative Commons” or any other trademark or logo of Creative Commons without its prior written consent including, without limitation, in connection with any unauthorized modifications to any of its public licenses or any other arrangements, understandings, or agreements concerning use of licensed material. For the avoidance of doubt, this paragraph does not form part of the public licenses.
-
-Creative Commons may be contacted at creativecommons.org.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

README.md

@@ -6,6 +6,28 @@
 
 本项目是一个使用 Kotlin 和 Jetpack Compose 开发的 Android 记账应用，采用 MVVM 架构，提供简洁直观的用户界面和丰富的记账功能。
 
+## 🔥 功能亮点
+
+### 📊 智能数据分析
+- **月度/年度报表**：收支对比、储蓄率、日均消费等关键指标
+- **详细分析报表**：分类统计明细、TOP排行榜、可视化进度条
+- **多维度统计**：支持按分类、成员、时间等多维度数据分析
+
+### 💼 预算管理系统
+- **多层级预算**：支持总预算、分类预算、成员预算
+- **实时监控**：预算使用情况可视化，超支警告提醒
+- **灵活配置**：可启用/禁用预算，自定义预警阈值
+
+### 🔐 数据安全保障
+- **备份加密**：使用 Android Keystore 加密导出文件
+- **离线优先**：完全本地存储，无网络依赖
+- **隐私保护**：极简权限，数据完全掌控
+
+### 🎨 现代化设计
+- **Material 3**：遵循最新设计规范
+- **深色模式**：支持系统主题切换
+- **响应式布局**：适配不同屏幕尺寸
+
 ## ⭐️ 主要特性
 
 - 🔒 完全离线运行，无需网络连接
@@ -13,6 +35,10 @@
 - 💰 支持收入和支出记录
 - 👥 支持多人记账
 - 📊 按日期和类别统计
+- 🔐 备份文件加密保护
+- 📅 自定义月度记账周期
+- 💼 预算管理（基本完成）
+- 📈 详细数据分析报表
 
 ## 🛠 技术栈
 
@@ -32,6 +58,7 @@
 - [x] Material 3 设计界面
 - [x] 深色/浅色主题切换
 - [x] 主题色自定义
+- [x] 月度记账开始日期
 
 ### 1. 成员系统 (已完成 🎉)
 - [x] 成员添加/编辑/删除
@@ -42,31 +69,46 @@
 ### 2. 图表分析 (已完成 🎉)
 - [x] 支出/收入趋势图表
 - [x] 分类占比饼图
-- [ ] 月度/年度报表
+- [x] 月度/年度报表
 - [x] 成员消费分析
 - [x] 自定义统计周期
 
-### 3. 数据管理 (进行中 🚀)
-- [ ] 导出 CSV/Excel 功能
-- [ ] 数据迁移工具
-- [ ] 定期自动备份
-- [ ] 备份加密功能
+### 3 图标美化计划 (已完成 🎉)
+- [x] 食品类图标 (餐饮、零食、饮料等)
+- [x] 交通类图标 (公交、打车、加油等)
+- [x] 购物类图标 (超市、数码、服装等)
+- [x] 居住类图标 (房租、水电、物业等)
+- [x] 医疗类图标 (药品、诊疗、保健等)
+- [x] 娱乐类图标 (游戏、电影、旅游等)
+- [x] 学习类图标 (书籍、课程、文具等)
+- [x] 其他类图标 (礼物、捐赠、其他等)
+- [x] 收入类图标 (工资、奖金、理财等)
+- [x] 成员图标 (家人、朋友、同事等)
 
-### 4. 预算管理 (计划中 💡)
-- [ ] 月度预算设置
+### 4. 数据管理 (已完成 🎉)
+- [x] 导出 CSV/Excel 功能
+- [x] 数据导入
+- [x] 数据迁移工具
+- [x] 定期自动备份
+- [x] 备份加密功能
+
+### 5. 预算管理 (基本完成 ✨)
+- [x] 预算数据模型设计
+- [x] 数据库架构实现
+- [x] 预算管理界面
+- [x] 月度预算设置
 - [ ] 预算超支提醒
-- [ ] 分类预算管理
-- [ ] 成员预算管理
+- [x] 分类预算管理
+- [x] 成员预算管理
 - [ ] 预算分析报告
 
-### 5. 体验优化 (持续进行 🔄)
+### 6. 体验优化 (持续进行 🔄)
 - [x] 深色模式支持
 - [ ] 手势操作优化
-- [ ] 快速记账小组件
 - [ ] 多语言支持
 - [ ] 自定义主题
 
-### 6. 性能提升 (持续进行 ⚡️)
+### 7. 性能提升 (持续进行 ⚡️)
 - [ ] 大数据量处理优化
 - [ ] 启动速度优化
 - [ ] 内存使用优化
@@ -102,6 +144,38 @@
 
 ## 📝 版本历史
 
+### v1.5 (开发中)
+- 预算管理功能
+  - 预算数据模型设计
+  - 支持总预算、分类预算、成员预算
+  - 数据库架构实现（升级到版本6）
+  - 预算管理界面设计
+  - 预算编辑对话框
+  - 预算状态可视化（进度条、超支提醒）
+  - 预算导航集成
+- 数据分析优化
+  - 月度/年度报表组件
+  - 详细分析报表（分类统计明细）
+  - 收支对比、储蓄率、日均消费分析
+  - TOP分类排行榜（金银铜奖牌设计）
+  - 报表视图集成到分析页面
+  - 修复嵌套滚动组件崩溃问题
+
+### v1.4
+- 数据安全功能
+  - 备份文件加密（使用Android Keystore）
+  - 支持加密CSV/Excel导出
+  - 自动检测和解密加密备份
+  - 设置页面加密开关
+- 月度记账优化
+  - 自定义月度开始日期（1-28号）
+  - 所有统计基于自定义周期
+
+### v1.3
+- 图标美化计划
+  - 增加图标美化
+  - 支持图标选择
+
 ### v1.2.0 - v1.2.4
 - 分类数据可视化
   - 支出/收入分类饼图展示
@@ -161,7 +235,7 @@
 
 ## 📄 许可证
 
-本项目采用 MIT 许可证 - 查看 [LICENSE](LICENSE) 文件了解详细信息
+本项目采用 Apache License 2.0 许可证 - 查看 [LICENSE](LICENSE) 文件了解详细信息
 
 ## 📮 联系方式
 

app/build.gradle.kts

@@ -16,8 +16,8 @@ android {
         applicationId = "com.yovinchen.bookkeeping"
         minSdk = 26
         targetSdk = 34
-        versionCode = 5
-        versionName = "1.2.3"
+        versionCode = 6
+        versionName = "1.3.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
@@ -107,4 +107,9 @@ dependencies {
     androidTestImplementation("androidx.compose.ui:ui-test-junit4")
     debugImplementation("androidx.compose.ui:ui-tooling")
     debugImplementation("androidx.compose.ui:ui-test-manifest")
+
+    // CSV Excel 库
+    implementation("com.opencsv:opencsv:5.7.1")
+    implementation("org.apache.poi:poi:5.2.3")
+    implementation("org.apache.poi:poi-ooxml:5.2.3")
 }

app/src/main/AndroidManifest.xml

@@ -2,6 +2,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

app/src/main/java/com/yovinchen/bookkeeping/MainActivity.kt

@@ -1,9 +1,12 @@
 package com.yovinchen.bookkeeping
 
 import android.app.Activity
+import android.net.Uri
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
@@ -19,17 +22,68 @@ import com.yovinchen.bookkeeping.model.ThemeMode
 import com.yovinchen.bookkeeping.ui.components.predefinedColors
 import com.yovinchen.bookkeeping.ui.navigation.MainNavigation
 import com.yovinchen.bookkeeping.ui.theme.BookkeepingTheme
+import com.yovinchen.bookkeeping.utils.FilePickerUtil
 
+/**
+ * 全局文件选择器启动器
+ * 用于在整个应用程序中共享同一个文件选择器实例
+ */
+private var filePickerLauncher: ActivityResultLauncher<Array<String>>? = null
+
+/**
+ * 获取预先注册的文件选择器启动器的扩展函数
+ * 
+ * @return 预先注册的文件选择器启动器
+ * @throws IllegalStateException 如果文件选择器未初始化
+ */
+fun ComponentActivity.getPreregisteredFilePickerLauncher(): ActivityResultLauncher<Array<String>> {
+    return filePickerLauncher ?: throw IllegalStateException("FilePickerLauncher not initialized")
+}
+
+/**
+ * 应用程序的主活动
+ * 负责初始化应用界面和必要的系统组件
+ */
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        // 设置系统窗口装饰，确保内容能够扩展到系统栏区域
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+
+        // 预注册文件选择器，用于处理文件选择操作
+        filePickerLauncher = registerForActivityResult(
+            ActivityResultContracts.OpenDocument()
+        ) { uri: Uri? ->
+            // 当用户选择文件后，调用工具类处理文件选择结果
+            FilePickerUtil.handleFileSelection(this, uri)
+        }
+
+        // 设置应用的主Compose内容
+        setContent {
+            BookkeepingApp()
+        }
+    }
+}
+
+/**
+ * 系统状态栏和导航栏颜色设置
+ * 根据当前主题模式设置系统UI元素的颜色和外观
+ * 
+ * @param isDarkTheme 是否为暗色主题
+ */
 @Composable
 private fun SystemBarColor(isDarkTheme: Boolean) {
     val view = LocalView.current
     if (!view.isInEditMode) {
+        // 获取当前主题的表面颜色用于系统栏
         val surfaceColor = MaterialTheme.colorScheme.surface.toArgb()
         val currentWindow = (view.context as? Activity)?.window
         SideEffect {
             currentWindow?.let { window ->
+                // 设置状态栏和导航栏颜色
                 window.statusBarColor = surfaceColor
                 window.navigationBarColor = surfaceColor
+                // 设置系统栏图标的亮暗模式，以确保在不同背景下的可见性
                 WindowCompat.getInsetsController(window, view).apply {
                     isAppearanceLightStatusBars = !isDarkTheme
                     isAppearanceLightNavigationBars = !isDarkTheme
@@ -39,27 +93,37 @@ private fun SystemBarColor(isDarkTheme: Boolean) {
     }
 }
 
+/**
+ * 记账应用的主Compose函数
+ * 处理主题设置并启动主导航组件
+ */
 @Composable
 fun BookkeepingApp() {
+    // 跟踪当前应用的主题模式状态
     var themeMode by remember { mutableStateOf<ThemeMode>(ThemeMode.FOLLOW_SYSTEM) }
     
+    // 根据主题模式确定是否使用暗色主题
     val isDarkTheme = when (themeMode) {
-        is ThemeMode.FOLLOW_SYSTEM -> isSystemInDarkTheme()
-        is ThemeMode.LIGHT -> false
-        is ThemeMode.DARK -> true
-        is ThemeMode.CUSTOM -> isSystemInDarkTheme()
+        is ThemeMode.FOLLOW_SYSTEM -> isSystemInDarkTheme()  // 跟随系统设置
+        is ThemeMode.LIGHT -> false                          // 强制使用亮色主题
+        is ThemeMode.DARK -> true                            // 强制使用暗色主题
+        is ThemeMode.CUSTOM -> isSystemInDarkTheme()         // 自定义主题下的基础亮暗模式仍跟随系统
     }
 
+    // 处理自定义主题颜色方案
     val customColorScheme = when (themeMode) {
         is ThemeMode.CUSTOM -> {
+            // 从主题模式中提取自定义主色
             val primaryColor = (themeMode as ThemeMode.CUSTOM).primaryColor
             if (isDarkTheme) {
+                // 暗色模式下的自定义颜色方案
                 MaterialTheme.colorScheme.copy(
                     primary = primaryColor,
                     secondary = primaryColor.copy(alpha = 0.7f),
                     tertiary = primaryColor.copy(alpha = 0.5f)
                 )
             } else {
+                // 亮色模式下的自定义颜色方案
                 MaterialTheme.colorScheme.copy(
                     primary = primaryColor,
                     secondary = primaryColor.copy(alpha = 0.7f),
@@ -67,37 +131,38 @@ fun BookkeepingApp() {
                 )
             }
         }
-        else -> null
+        else -> null  // 非自定义主题模式使用默认颜色方案
     }
 
+    // 应用主题到整个应用内容
     BookkeepingTheme(
         darkTheme = isDarkTheme,
         customColorScheme = customColorScheme
     ) {
+        // 设置系统状态栏和导航栏颜色
         SystemBarColor(isDarkTheme)
         
+        // 创建填充整个屏幕的基础Surface
         Surface(
             modifier = Modifier.fillMaxSize(),
             color = MaterialTheme.colorScheme.surface
         ) {
+            // 启动主导航组件，并传递主题相关参数
             MainNavigation(
                 currentTheme = themeMode,
-                onThemeChange = { themeMode = it }
+                onThemeChange = { themeMode = it }  // 允许导航组件中的屏幕更改主题
             )
         }
     }
 }
 
-class MainActivity : ComponentActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        WindowCompat.setDecorFitsSystemWindows(window, false)
-        setContent {
-            BookkeepingApp()
-        }
-    }
-}
-
+/**
+ * 示例问候函数
+ * 仅用于开发预览和测试目的
+ * 
+ * @param name 要显示的名称
+ * @param modifier 应用于Text组件的修饰符
+ */
 @Composable
 fun Greeting(name: String, modifier: Modifier = Modifier) {
     Text(
@@ -106,6 +171,9 @@ fun Greeting(name: String, modifier: Modifier = Modifier) {
     )
 }
 
+/**
+ * Greeting组件的预览函数
+ */
 @Preview(showBackground = true)
 @Composable
 fun GreetingPreview() {
@@ -114,6 +182,9 @@ fun GreetingPreview() {
     }
 }
 
+/**
+ * 整个应用的预览函数
+ */
 @Preview(showBackground = true)
 @Composable
 fun BookkeepingAppPreview() {

app/src/main/java/com/yovinchen/bookkeeping/data/BookkeepingDatabase.kt

@@ -8,18 +8,21 @@ import androidx.room.RoomDatabase
 import androidx.room.TypeConverters
 import androidx.room.migration.Migration
 import androidx.sqlite.db.SupportSQLiteDatabase
+import com.yovinchen.bookkeeping.R
 import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.Budget
 import com.yovinchen.bookkeeping.model.Category
 import com.yovinchen.bookkeeping.model.Converters
 import com.yovinchen.bookkeeping.model.Member
+import com.yovinchen.bookkeeping.model.Settings
 import com.yovinchen.bookkeeping.model.TransactionType
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 
 @Database(
-    entities = [BookkeepingRecord::class, Category::class, Member::class],
-    version = 3,
+    entities = [BookkeepingRecord::class, Category::class, Member::class, Settings::class, Budget::class],
+    version = 6,
     exportSchema = false
 )
 @TypeConverters(Converters::class)
@@ -27,6 +30,8 @@ abstract class BookkeepingDatabase : RoomDatabase() {
     abstract fun bookkeepingDao(): BookkeepingDao
     abstract fun categoryDao(): CategoryDao
     abstract fun memberDao(): MemberDao
+    abstract fun settingsDao(): SettingsDao
+    abstract fun budgetDao(): BudgetDao
 
     companion object {
         private const val TAG = "BookkeepingDatabase"
@@ -38,14 +43,15 @@ abstract class BookkeepingDatabase : RoomDatabase() {
                     CREATE TABLE IF NOT EXISTS members (
                         id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                         name TEXT NOT NULL,
-                        description TEXT NOT NULL DEFAULT ''
+                        description TEXT NOT NULL DEFAULT '',
+                        icon INTEGER NOT NULL DEFAULT 0
                     )
                 """)
                 
                 // 插入默认成员
                 db.execSQL("""
-                    INSERT INTO members (name, description)
-                    VALUES ('自己', '默认成员')
+                    INSERT INTO members (name, description, icon)
+                    VALUES ('自己', '默认成员', ${R.drawable.ic_member_boy_24dp})
                 """)
 
                 // 修改记账记录表，添加成员ID字段
@@ -96,14 +102,15 @@ abstract class BookkeepingDatabase : RoomDatabase() {
                     CREATE TABLE IF NOT EXISTS categories_new (
                         id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                         name TEXT NOT NULL,
-                        type TEXT NOT NULL
+                        type TEXT NOT NULL,
+                        icon INTEGER NOT NULL DEFAULT 0
                     )
                 """)
 
                 // 复制分类数据
                 db.execSQL("""
-                    INSERT INTO categories_new (id, name, type)
-                    SELECT id, name, type FROM categories
+                    INSERT INTO categories_new (id, name, type, icon)
+                    SELECT id, name, type, 0 FROM categories
                 """)
 
                 // 删除旧表
@@ -114,6 +121,59 @@ abstract class BookkeepingDatabase : RoomDatabase() {
             }
         }
 
+        private val MIGRATION_3_4 = object : Migration(3, 4) {
+            override fun migrate(db: SupportSQLiteDatabase) {
+                // 如果需要，在这里添加数据库迁移逻辑
+                // 由于这次更改可能只是schema hash的变化，我们不需要实际的数据库更改
+            }
+        }
+
+        private val MIGRATION_4_5 = object : Migration(4, 5) {
+            override fun migrate(db: SupportSQLiteDatabase) {
+                // 创建设置表
+                db.execSQL("""
+                    CREATE TABLE IF NOT EXISTS settings (
+                        id INTEGER PRIMARY KEY NOT NULL DEFAULT 1,
+                        monthStartDay INTEGER NOT NULL DEFAULT 1,
+                        themeMode TEXT NOT NULL DEFAULT 'FOLLOW_SYSTEM',
+                        autoBackupEnabled INTEGER NOT NULL DEFAULT 0,
+                        autoBackupInterval INTEGER NOT NULL DEFAULT 7,
+                        lastBackupTime INTEGER NOT NULL DEFAULT 0
+                    )
+                """)
+                
+                // 插入默认设置
+                db.execSQL("""
+                    INSERT OR IGNORE INTO settings (id, monthStartDay, themeMode, autoBackupEnabled, autoBackupInterval, lastBackupTime)
+                    VALUES (1, 1, 'FOLLOW_SYSTEM', 0, 7, 0)
+                """)
+            }
+        }
+        
+        private val MIGRATION_5_6 = object : Migration(5, 6) {
+            override fun migrate(db: SupportSQLiteDatabase) {
+                // 创建预算表
+                db.execSQL("""
+                    CREATE TABLE IF NOT EXISTS budgets (
+                        id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                        type TEXT NOT NULL,
+                        categoryName TEXT,
+                        memberId INTEGER,
+                        amount REAL NOT NULL,
+                        startDate INTEGER NOT NULL,
+                        endDate INTEGER NOT NULL,
+                        isEnabled INTEGER NOT NULL DEFAULT 1,
+                        alertThreshold REAL NOT NULL DEFAULT 0.8,
+                        createdAt INTEGER NOT NULL,
+                        updatedAt INTEGER NOT NULL
+                    )
+                """)
+                
+                // 在 settings 表中添加 encryptBackup 列
+                db.execSQL("ALTER TABLE settings ADD COLUMN encryptBackup INTEGER NOT NULL DEFAULT 1")
+            }
+        }
+
         @Volatile
         private var INSTANCE: BookkeepingDatabase? = null
 
@@ -124,7 +184,7 @@ abstract class BookkeepingDatabase : RoomDatabase() {
                     BookkeepingDatabase::class.java,
                     "bookkeeping_database"
                 )
-                    .addMigrations(MIGRATION_1_2, MIGRATION_2_3)
+                    .addMigrations(MIGRATION_1_2, MIGRATION_2_3, MIGRATION_3_4, MIGRATION_4_5, MIGRATION_5_6)
                     .addCallback(object : Callback() {
                         override fun onCreate(db: SupportSQLiteDatabase) {
                             super.onCreate(db)
@@ -133,31 +193,60 @@ abstract class BookkeepingDatabase : RoomDatabase() {
                                 try {
                                     val database = getDatabase(context)
                                     
+                                    // 初始化默认设置
+                                    database.settingsDao().apply {
+                                        updateSettings(Settings())
+                                    }
+                                    
                                     // 初始化默认成员
                                     database.memberDao().apply {
                                         if (getMemberCount() == 0) {
-                                            insertMember(Member(name = "自己", description = "默认成员"))
+                                            insertMember(Member(name = "自己", description = "默认成员", icon = R.drawable.ic_member_boy_24dp))
+                                            insertMember(Member(name = "老婆", description = "默认成员", icon = R.drawable.ic_member_girl_24dp))
+                                            insertMember(Member(name = "老公", description = "默认成员", icon = R.drawable.ic_member_boy_24dp))
+                                            insertMember(Member(name = "家庭", description = "默认成员", icon = R.drawable.ic_member_family_24dp))
+                                            insertMember(Member(name = "儿子", description = "默认成员", icon = R.drawable.ic_member_baby_boy_24dp))
+                                            insertMember(Member(name = "女儿", description = "默认成员", icon = R.drawable.ic_member_baby_girl_24dp))
+                                            insertMember(Member(name = "爸爸", description = "默认成员", icon = R.drawable.ic_member_father_24dp))
+                                            insertMember(Member(name = "妈妈", description = "默认成员", icon = R.drawable.ic_member_mother_24dp))
+                                            insertMember(Member(name = "爷爷", description = "默认成员", icon = R.drawable.ic_member_grandfather_24dp))
+                                            insertMember(Member(name = "奶奶", description = "默认成员", icon = R.drawable.ic_member_grandmother_24dp))
+                                            insertMember(Member(name = "外公", description = "默认成员", icon = R.drawable.ic_member_grandfather_24dp))
+                                            insertMember(Member(name = "外婆", description = "默认成员", icon = R.drawable.ic_member_grandmother_24dp))
+                                            insertMember(Member(name = "其他人", description = "默认成员", icon = R.drawable.ic_member_boy_24dp))
                                         }
                                     }
 
-                                    // 初始化默认分类
+// 初始化默认分类
                                     database.categoryDao().apply {
                                         // 支出分类
-                                        insertCategory(Category(name = "餐饮", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "交通", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "购物", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "娱乐", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "居住", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "医疗", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "教育", type = TransactionType.EXPENSE))
-                                        insertCategory(Category(name = "其他支出", type = TransactionType.EXPENSE))
+                                        insertCategory(Category(name = "餐饮", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_food_24dp))      // "餐饮" to R.drawable.ic_category_food_24dp
+                                        insertCategory(Category(name = "交通", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_taxi_24dp))      // "交通" to R.drawable.ic_category_taxi_24dp
+                                        insertCategory(Category(name = "购物", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_supermarket_24dp)) // "购物" to R.drawable.ic_category_supermarket_24dp
+                                        insertCategory(Category(name = "娱乐", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_bar_24dp))       // "娱乐" to R.drawable.ic_category_bar_24dp
+                                        insertCategory(Category(name = "居住", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_hotel_24dp))     // "居住" to R.drawable.ic_category_hotel_24dp
+                                        insertCategory(Category(name = "医疗", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_medicine_24dp))  // "医疗" to R.drawable.ic_category_medicine_24dp
+                                        insertCategory(Category(name = "教育", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_training_24dp))  // "教育" to R.drawable.ic_category_training_24dp
+                                        insertCategory(Category(name = "宠物", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_pet_24dp))       // "宠物" to R.drawable.ic_category_pet_24dp
+                                        insertCategory(Category(name = "鲜花", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_flower_24dp))    // "鲜花" to R.drawable.ic_category_flower_24dp
+                                        insertCategory(Category(name = "外卖", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_delivery_24dp))  // "外卖" to R.drawable.ic_category_delivery_24dp
+                                        insertCategory(Category(name = "数码", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_digital_24dp))   // "数码" to R.drawable.ic_category_digital_24dp
+                                        insertCategory(Category(name = "化妆品", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_cosmetics_24dp)) // "化妆品" to R.drawable.ic_category_cosmetics_24dp
+                                        insertCategory(Category(name = "水果", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_fruit_24dp))     // "水果" to R.drawable.ic_category_fruit_24dp
+                                        insertCategory(Category(name = "零食", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_snack_24dp))     // "零食" to R.drawable.ic_category_snack_24dp
+                                        insertCategory(Category(name = "蔬菜", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_vegetable_24dp)) // "蔬菜" to R.drawable.ic_category_vegetable_24dp
+                                        insertCategory(Category(name = "会员", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_membership_24dp)) // "工资" to R.drawable.ic_category_membership_24dp
+                                        insertCategory(Category(name = "礼物", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_gift_24dp))      // "礼物" to R.drawable.ic_category_gift_24dp
+                                        insertCategory(Category(name = "其他支出", type = TransactionType.EXPENSE, icon = R.drawable.ic_category_more_24dp))  // "其他" to R.drawable.ic_category_more_24dp
+
+// 收入分类
+                                        insertCategory(Category(name = "工资", type = TransactionType.INCOME, icon = R.drawable.ic_category_membership_24dp)) // "工资" to R.drawable.ic_category_membership_24dp
+                                        insertCategory(Category(name = "奖金", type = TransactionType.INCOME, icon = R.drawable.ic_category_gift_24dp))      // "奖金" to R.drawable.ic_category_gift_24dp
+                                        insertCategory(Category(name = "投资", type = TransactionType.INCOME, icon = R.drawable.ic_category_digital_24dp))   // "投资" to R.drawable.ic_category_digital_24dp
+                                        insertCategory(Category(name = "其他收入", type = TransactionType.INCOME, icon = R.drawable.ic_category_more_24dp))   // "其他" to R.drawable.ic_category_more_24dp
 
-                                        // 收入分类
-                                        insertCategory(Category(name = "工资", type = TransactionType.INCOME))
-                                        insertCategory(Category(name = "奖金", type = TransactionType.INCOME))
-                                        insertCategory(Category(name = "投资", type = TransactionType.INCOME))
-                                        insertCategory(Category(name = "其他收入", type = TransactionType.INCOME))
                                     }
+
                                     
                                     Log.d(TAG, "Default data initialized successfully")
                                 } catch (e: Exception) {

app/src/main/java/com/yovinchen/bookkeeping/data/BudgetDao.kt

@@ -0,0 +1,105 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.*
+import com.yovinchen.bookkeeping.model.Budget
+import com.yovinchen.bookkeeping.model.BudgetType
+import kotlinx.coroutines.flow.Flow
+import java.util.Date
+
+/**
+ * 预算数据访问对象
+ * 提供预算相关的数据库操作接口
+ */
+@Dao
+interface BudgetDao {
+    
+    /**
+     * 插入新预算
+     */
+    @Insert
+    suspend fun insertBudget(budget: Budget): Long
+    
+    /**
+     * 更新预算
+     */
+    @Update
+    suspend fun updateBudget(budget: Budget)
+    
+    /**
+     * 删除预算
+     */
+    @Delete
+    suspend fun deleteBudget(budget: Budget)
+    
+    /**
+     * 根据ID获取预算
+     */
+    @Query("SELECT * FROM budgets WHERE id = :budgetId")
+    suspend fun getBudgetById(budgetId: Int): Budget?
+    
+    /**
+     * 获取所有启用的预算
+     */
+    @Query("SELECT * FROM budgets WHERE isEnabled = 1 ORDER BY type, amount DESC")
+    fun getAllEnabledBudgets(): Flow<List<Budget>>
+    
+    /**
+     * 获取所有预算（包括禁用的）
+     */
+    @Query("SELECT * FROM budgets ORDER BY type, amount DESC")
+    fun getAllBudgets(): Flow<List<Budget>>
+    
+    /**
+     * 根据类型获取预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = :type AND isEnabled = 1")
+    fun getBudgetsByType(type: BudgetType): Flow<List<Budget>>
+    
+    /**
+     * 获取总预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = 'TOTAL' AND isEnabled = 1 AND :date BETWEEN startDate AND endDate LIMIT 1")
+    suspend fun getTotalBudget(date: Date): Budget?
+    
+    /**
+     * 获取指定分类的预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = 'CATEGORY' AND categoryName = :categoryName AND isEnabled = 1 AND :date BETWEEN startDate AND endDate LIMIT 1")
+    suspend fun getCategoryBudget(categoryName: String, date: Date): Budget?
+    
+    /**
+     * 获取指定成员的预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = 'MEMBER' AND memberId = :memberId AND isEnabled = 1 AND :date BETWEEN startDate AND endDate LIMIT 1")
+    suspend fun getMemberBudget(memberId: Int, date: Date): Budget?
+    
+    /**
+     * 获取当前有效的所有预算
+     */
+    @Query("SELECT * FROM budgets WHERE isEnabled = 1 AND :date BETWEEN startDate AND endDate ORDER BY type, amount DESC")
+    fun getActiveBudgets(date: Date): Flow<List<Budget>>
+    
+    /**
+     * 更新预算的启用状态
+     */
+    @Query("UPDATE budgets SET isEnabled = :enabled, updatedAt = :updatedAt WHERE id = :budgetId")
+    suspend fun updateBudgetEnabled(budgetId: Int, enabled: Boolean, updatedAt: Date = Date())
+    
+    /**
+     * 删除所有过期的预算（可选）
+     */
+    @Query("DELETE FROM budgets WHERE endDate < :date AND isEnabled = 0")
+    suspend fun deleteExpiredBudgets(date: Date)
+    
+    /**
+     * 获取指定日期范围内的分类预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = 'CATEGORY' AND isEnabled = 1 AND :date BETWEEN startDate AND endDate")
+    fun getCategoryBudgetsForDate(date: Date): Flow<List<Budget>>
+    
+    /**
+     * 获取指定日期范围内的成员预算
+     */
+    @Query("SELECT * FROM budgets WHERE type = 'MEMBER' AND isEnabled = 1 AND :date BETWEEN startDate AND endDate")
+    fun getMemberBudgetsForDate(date: Date): Flow<List<Budget>>
+}

app/src/main/java/com/yovinchen/bookkeeping/data/BudgetRepository.kt

@@ -0,0 +1,215 @@
+package com.yovinchen.bookkeeping.data
+
+import com.yovinchen.bookkeeping.model.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+import java.util.Date
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * 预算仓库类
+ * 提供预算相关的业务逻辑和数据访问
+ */
+class BudgetRepository(
+    private val budgetDao: BudgetDao,
+    private val bookkeepingDao: BookkeepingDao,
+    private val memberDao: MemberDao
+) {
+    
+    /**
+     * 创建新预算
+     */
+    suspend fun createBudget(budget: Budget): Long {
+        return budgetDao.insertBudget(budget)
+    }
+    
+    /**
+     * 更新预算
+     */
+    suspend fun updateBudget(budget: Budget) {
+        budgetDao.updateBudget(budget.copy(updatedAt = Date()))
+    }
+    
+    /**
+     * 删除预算
+     */
+    suspend fun deleteBudget(budget: Budget) {
+        budgetDao.deleteBudget(budget)
+    }
+    
+    /**
+     * 获取所有预算
+     */
+    fun getAllBudgets(): Flow<List<Budget>> {
+        return budgetDao.getAllBudgets()
+    }
+    
+    /**
+     * 获取所有启用的预算
+     */
+    fun getAllEnabledBudgets(): Flow<List<Budget>> {
+        return budgetDao.getAllEnabledBudgets()
+    }
+    
+    /**
+     * 获取当前有效的预算状态
+     */
+    fun getActiveBudgetStatuses(date: Date = Date()): Flow<List<BudgetStatus>> {
+        return combine(
+            budgetDao.getActiveBudgets(date),
+            bookkeepingDao.getAllRecords(),
+            memberDao.getAllMembers()
+        ) { budgets, records, members ->
+            budgets.map { budget ->
+                val spent = calculateSpent(budget, records, members, date)
+                val remaining = budget.amount - spent
+                val percentage = if (budget.amount > 0) spent / budget.amount else 0.0
+                
+                BudgetStatus(
+                    budget = budget,
+                    spent = spent,
+                    remaining = remaining,
+                    percentage = percentage,
+                    isOverBudget = spent > budget.amount,
+                    isNearLimit = percentage >= budget.alertThreshold
+                )
+            }
+        }
+    }
+    
+    /**
+     * 计算预算已花费金额
+     */
+    private fun calculateSpent(
+        budget: Budget,
+        records: List<BookkeepingRecord>,
+        members: List<Member>,
+        currentDate: Date
+    ): Double {
+        // 只计算支出类型的记录
+        val expenseRecords = records.filter { 
+            it.type == TransactionType.EXPENSE &&
+            it.date >= budget.startDate &&
+            it.date <= budget.endDate &&
+            it.date <= currentDate
+        }
+        
+        return when (budget.type) {
+            BudgetType.TOTAL -> {
+                // 总预算：计算所有支出
+                expenseRecords.sumOf { it.amount }
+            }
+            BudgetType.CATEGORY -> {
+                // 分类预算：计算指定分类的支出
+                expenseRecords
+                    .filter { it.category == budget.categoryName }
+                    .sumOf { it.amount }
+            }
+            BudgetType.MEMBER -> {
+                // 成员预算：计算指定成员的支出
+                expenseRecords
+                    .filter { it.memberId == budget.memberId }
+                    .sumOf { it.amount }
+            }
+        }
+    }
+    
+    /**
+     * 获取总预算状态
+     */
+    suspend fun getTotalBudgetStatus(date: Date = Date()): BudgetStatus? {
+        val budget = budgetDao.getTotalBudget(date) ?: return null
+        val records = bookkeepingDao.getAllRecords().first()
+        val members = memberDao.getAllMembers().first()
+        
+        val spent = calculateSpent(budget, records, members, date)
+        val remaining = budget.amount - spent
+        val percentage = if (budget.amount > 0) spent / budget.amount else 0.0
+        
+        return BudgetStatus(
+            budget = budget,
+            spent = spent,
+            remaining = remaining,
+            percentage = percentage,
+            isOverBudget = spent > budget.amount,
+            isNearLimit = percentage >= budget.alertThreshold
+        )
+    }
+    
+    /**
+     * 获取分类预算状态
+     */
+    fun getCategoryBudgetStatuses(date: Date = Date()): Flow<List<BudgetStatus>> {
+        return combine(
+            budgetDao.getCategoryBudgetsForDate(date),
+            bookkeepingDao.getAllRecords(),
+            memberDao.getAllMembers()
+        ) { budgets, records, members ->
+            budgets.map { budget ->
+                val spent = calculateSpent(budget, records, members, date)
+                val remaining = budget.amount - spent
+                val percentage = if (budget.amount > 0) spent / budget.amount else 0.0
+                
+                BudgetStatus(
+                    budget = budget,
+                    spent = spent,
+                    remaining = remaining,
+                    percentage = percentage,
+                    isOverBudget = spent > budget.amount,
+                    isNearLimit = percentage >= budget.alertThreshold
+                )
+            }
+        }
+    }
+    
+    /**
+     * 获取成员预算状态
+     */
+    fun getMemberBudgetStatuses(date: Date = Date()): Flow<List<BudgetStatus>> {
+        return combine(
+            budgetDao.getMemberBudgetsForDate(date),
+            bookkeepingDao.getAllRecords(),
+            memberDao.getAllMembers()
+        ) { budgets, records, members ->
+            budgets.map { budget ->
+                val spent = calculateSpent(budget, records, members, date)
+                val remaining = budget.amount - spent
+                val percentage = if (budget.amount > 0) spent / budget.amount else 0.0
+                
+                BudgetStatus(
+                    budget = budget,
+                    spent = spent,
+                    remaining = remaining,
+                    percentage = percentage,
+                    isOverBudget = spent > budget.amount,
+                    isNearLimit = percentage >= budget.alertThreshold
+                )
+            }
+        }
+    }
+    
+    /**
+     * 检查是否有预算超支或接近限制
+     */
+    suspend fun checkBudgetAlerts(date: Date = Date()): List<BudgetStatus> {
+        val allStatuses = getActiveBudgetStatuses(date).first()
+        return allStatuses.filter { it.isOverBudget || it.isNearLimit }
+    }
+    
+    /**
+     * 更新预算启用状态
+     */
+    suspend fun updateBudgetEnabled(budgetId: Int, enabled: Boolean) {
+        budgetDao.updateBudgetEnabled(budgetId, enabled)
+    }
+    
+    /**
+     * 清理过期的禁用预算
+     */
+    suspend fun cleanupExpiredBudgets() {
+        budgetDao.deleteExpiredBudgets(Date())
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/data/Converters.kt

@@ -1,6 +1,7 @@
 package com.yovinchen.bookkeeping.data
 
 import androidx.room.TypeConverter
+import com.yovinchen.bookkeeping.model.BudgetType
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 import java.util.*
@@ -29,4 +30,14 @@ class Converters {
     fun toDate(timestamp: String?): Date? {
         return timestamp?.let { Date(it.toLong()) }
     }
+    
+    @TypeConverter
+    fun fromBudgetType(budgetType: BudgetType?): String? {
+        return budgetType?.name
+    }
+    
+    @TypeConverter
+    fun toBudgetType(budgetType: String?): BudgetType? {
+        return budgetType?.let { BudgetType.valueOf(it) }
+    }
 }

app/src/main/java/com/yovinchen/bookkeeping/data/SettingsDao.kt

@@ -0,0 +1,35 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.*
+import com.yovinchen.bookkeeping.model.Settings
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface SettingsDao {
+    @Query("SELECT * FROM settings WHERE id = 1")
+    fun getSettings(): Flow<Settings?>
+    
+    @Query("SELECT * FROM settings WHERE id = 1")
+    suspend fun getSettingsOnce(): Settings?
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun updateSettings(settings: Settings)
+    
+    @Query("UPDATE settings SET monthStartDay = :day WHERE id = 1")
+    suspend fun updateMonthStartDay(day: Int)
+    
+    @Query("UPDATE settings SET themeMode = :mode WHERE id = 1")
+    suspend fun updateThemeMode(mode: String)
+    
+    @Query("UPDATE settings SET autoBackupEnabled = :enabled WHERE id = 1")
+    suspend fun updateAutoBackupEnabled(enabled: Boolean)
+    
+    @Query("UPDATE settings SET autoBackupInterval = :interval WHERE id = 1")
+    suspend fun updateAutoBackupInterval(interval: Int)
+    
+    @Query("UPDATE settings SET lastBackupTime = :time WHERE id = 1")
+    suspend fun updateLastBackupTime(time: Long)
+    
+    @Query("UPDATE settings SET encryptBackup = :encrypt WHERE id = 1")
+    suspend fun updateEncryptBackup(encrypt: Boolean)
+}

app/src/main/java/com/yovinchen/bookkeeping/data/SettingsRepository.kt

@@ -0,0 +1,45 @@
+package com.yovinchen.bookkeeping.data
+
+import com.yovinchen.bookkeeping.model.Settings
+import kotlinx.coroutines.flow.Flow
+
+class SettingsRepository(private val settingsDao: SettingsDao) {
+    
+    fun getSettings(): Flow<Settings?> = settingsDao.getSettings()
+    
+    suspend fun getSettingsOnce(): Settings {
+        return settingsDao.getSettingsOnce() ?: Settings()
+    }
+    
+    suspend fun updateSettings(settings: Settings) {
+        settingsDao.updateSettings(settings)
+    }
+    
+    suspend fun updateMonthStartDay(day: Int) {
+        // 确保日期在有效范围内 (1-28)
+        val validDay = day.coerceIn(1, 28)
+        settingsDao.updateMonthStartDay(validDay)
+    }
+    
+    suspend fun updateThemeMode(mode: String) {
+        settingsDao.updateThemeMode(mode)
+    }
+    
+    suspend fun updateAutoBackupEnabled(enabled: Boolean) {
+        settingsDao.updateAutoBackupEnabled(enabled)
+    }
+    
+    suspend fun updateAutoBackupInterval(interval: Int) {
+        settingsDao.updateAutoBackupInterval(interval)
+    }
+    
+    suspend fun updateLastBackupTime(time: Long) {
+        settingsDao.updateLastBackupTime(time)
+    }
+    
+    suspend fun ensureSettingsExist() {
+        if (settingsDao.getSettingsOnce() == null) {
+            settingsDao.updateSettings(Settings())
+        }
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/model/AnalysisType.kt

@@ -1,7 +1,13 @@
 package com.yovinchen.bookkeeping.model
 
+/**
+ * 分析类型枚举
+ * 定义记账应用中不同的数据分析视图类型
+ * 
+ * 用于在数据分析模块中区分不同的分析维度和图表类型
+ */
 enum class AnalysisType {
-    EXPENSE,
-    INCOME,
-    TREND
+    EXPENSE,    // 支出分析，用于分析用户的支出情况
+    INCOME,     // 收入分析，用于分析用户的收入情况
+    TREND       // 趋势分析，用于分析用户收支随时间的变化趋势
 }

app/src/main/java/com/yovinchen/bookkeeping/model/BookkeepingRecord.kt

@@ -9,32 +9,71 @@ import androidx.room.TypeConverters
 import com.yovinchen.bookkeeping.model.Member
 import java.util.Date
 
+/**
+ * 交易类型枚举
+ * 定义记账记录的交易类型
+ */
 enum class TransactionType {
-    INCOME, EXPENSE
+    INCOME,   // 收入
+    EXPENSE   // 支出
 }
 
+/**
+ * Room数据库类型转换器
+ * 用于在数据库中存储和检索复杂类型
+ */
 class Converters {
+    /**
+     * 将时间戳转换为Date对象
+     * 
+     * @param value 时间戳（毫秒）
+     * @return 对应的Date对象，如果输入为null则返回null
+     */
     @TypeConverter
     fun fromTimestamp(value: Long?): Date? {
         return value?.let { Date(it) }
     }
 
+    /**
+     * 将Date对象转换为时间戳
+     * 
+     * @param date Date对象
+     * @return 对应的时间戳（毫秒），如果输入为null则返回null
+     */
     @TypeConverter
     fun dateToTimestamp(date: Date?): Long? {
         return date?.time
     }
 
+    /**
+     * 将字符串转换为TransactionType枚举
+     * 
+     * @param value 交易类型的字符串表示
+     * @return 对应的TransactionType枚举值
+     */
     @TypeConverter
     fun fromTransactionType(value: String): TransactionType {
         return enumValueOf<TransactionType>(value)
     }
 
+    /**
+     * 将TransactionType枚举转换为字符串
+     * 
+     * @param type TransactionType枚举值
+     * @return 对应的字符串表示
+     */
     @TypeConverter
     fun transactionTypeToString(type: TransactionType): String {
         return type.name
     }
 }
 
+/**
+ * 记账记录实体类
+ * 用于在Room数据库中存储用户的收支记录
+ * 
+ * 该实体与Member实体存在外键关系，表示每条记录可以关联到一个家庭成员
+ */
 @Entity(
     tableName = "bookkeeping_records",
     foreignKeys = [
@@ -42,21 +81,21 @@ class Converters {
             entity = Member::class,
             parentColumns = ["id"],
             childColumns = ["memberId"],
-            onDelete = ForeignKey.SET_NULL
+            onDelete = ForeignKey.SET_NULL  // 当关联的成员被删除时，将此字段设为NULL
         )
     ],
     indices = [
-        Index(value = ["memberId"])
+        Index(value = ["memberId"])  // 在memberId上创建索引以提高查询性能
     ]
 )
-@TypeConverters(Converters::class)
+@TypeConverters(Converters::class)  // 应用类型转换器
 data class BookkeepingRecord(
     @PrimaryKey(autoGenerate = true)
-    val id: Long = 0,
-    val amount: Double,
-    val type: TransactionType,
-    val category: String,
-    val description: String,
-    val date: Date,
-    val memberId: Int? = null  // 可为空，表示未指定成员
+    val id: Long = 0,               // 记录ID，自动生成
+    val amount: Double,             // 金额
+    val type: TransactionType,      // 交易类型（收入或支出）
+    val category: String,           // 分类
+    val description: String,        // 描述
+    val date: Date,                 // 日期
+    val memberId: Int? = null       // 关联的成员ID，可为空表示未指定成员
 )

app/src/main/java/com/yovinchen/bookkeeping/model/Budget.kt

@@ -0,0 +1,86 @@
+package com.yovinchen.bookkeeping.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.util.Date
+
+/**
+ * 预算实体类
+ * 用于设置和跟踪月度预算、分类预算和成员预算
+ */
+@Entity(tableName = "budgets")
+data class Budget(
+    @PrimaryKey(autoGenerate = true)
+    val id: Int = 0,
+    
+    /**
+     * 预算类型：TOTAL（总预算）, CATEGORY（分类预算）, MEMBER（成员预算）
+     */
+    val type: BudgetType,
+    
+    /**
+     * 预算关联的分类名称（仅在 type 为 CATEGORY 时使用）
+     */
+    val categoryName: String? = null,
+    
+    /**
+     * 预算关联的成员ID（仅在 type 为 MEMBER 时使用）
+     */
+    val memberId: Int? = null,
+    
+    /**
+     * 预算金额
+     */
+    val amount: Double,
+    
+    /**
+     * 预算生效开始日期
+     */
+    val startDate: Date,
+    
+    /**
+     * 预算生效结束日期
+     */
+    val endDate: Date,
+    
+    /**
+     * 是否启用此预算
+     */
+    val isEnabled: Boolean = true,
+    
+    /**
+     * 提醒阈值（百分比，如 0.8 表示达到 80% 时提醒）
+     */
+    val alertThreshold: Double = 0.8,
+    
+    /**
+     * 创建时间
+     */
+    val createdAt: Date = Date(),
+    
+    /**
+     * 更新时间
+     */
+    val updatedAt: Date = Date()
+)
+
+/**
+ * 预算类型枚举
+ */
+enum class BudgetType {
+    TOTAL,      // 总预算
+    CATEGORY,   // 分类预算
+    MEMBER      // 成员预算
+}
+
+/**
+ * 预算状态数据类，用于展示预算使用情况
+ */
+data class BudgetStatus(
+    val budget: Budget,
+    val spent: Double,          // 已花费金额
+    val remaining: Double,      // 剩余金额
+    val percentage: Double,     // 使用百分比
+    val isOverBudget: Boolean,  // 是否超预算
+    val isNearLimit: Boolean    // 是否接近预算限制
+)

app/src/main/java/com/yovinchen/bookkeeping/model/Category.kt

@@ -3,10 +3,18 @@ package com.yovinchen.bookkeeping.model
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 
+/**
+ * 交易分类实体类
+ * 用于在Room数据库中存储收支分类信息
+ * 
+ * 在记账应用中，每条记账记录都属于某个分类，
+ * 如"餐饮"、"交通"、"工资"等，便于用户对支出和收入进行分类统计
+ */
 @Entity(tableName = "categories")
 data class Category(
     @PrimaryKey(autoGenerate = true)
-    val id: Long = 0,
-    val name: String,
-    val type: TransactionType
+    val id: Long = 0,               // 分类ID，自动生成
+    val name: String,               // 分类名称
+    val type: TransactionType,      // 分类关联的交易类型（收入或支出）
+    val icon: Int? = null           // 分类图标资源ID，可选，默认为null
 )

app/src/main/java/com/yovinchen/bookkeeping/model/CategoryStat.kt

@@ -1,8 +1,14 @@
 package com.yovinchen.bookkeeping.model
 
+/**
+ * 分类统计数据类
+ * 用于表示某个分类的统计信息，通常用于数据分析和图表展示
+ * 
+ * 该类不是数据库实体，而是从数据库查询结果中聚合生成的统计数据
+ */
 data class CategoryStat(
-    val category: String,
-    val amount: Double,
-    val count: Int = 0,
-    val percentage: Double = 0.0
+    val category: String,           // 分类名称
+    val amount: Double,             // 该分类的总金额
+    val count: Int = 0,             // 该分类下的记录数量
+    val percentage: Double = 0.0    // 该分类金额占总金额的百分比（0.0-100.0）
 )

app/src/main/java/com/yovinchen/bookkeeping/model/Member.kt

@@ -3,10 +3,18 @@ package com.yovinchen.bookkeeping.model
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 
+/**
+ * 家庭成员实体类
+ * 用于在Room数据库中存储家庭成员信息
+ * 
+ * 在记账应用中，每条记账记录可以关联到特定的家庭成员，
+ * 以便追踪不同成员的收支情况
+ */
 @Entity(tableName = "members")
 data class Member(
     @PrimaryKey(autoGenerate = true)
-    val id: Int = 0,
-    val name: String,
-    val description: String = ""  // 可选的描述信息
+    val id: Int = 0,                // 成员ID，自动生成
+    val name: String,               // 成员姓名
+    val description: String = "",   // 成员描述信息，可选，默认为空字符串
+    val icon: Int? = null           // 成员图标资源ID，可选，默认为null
 )

app/src/main/java/com/yovinchen/bookkeeping/model/MemberStat.kt

@@ -2,16 +2,39 @@ package com.yovinchen.bookkeeping.model
 
 import androidx.room.ColumnInfo
 
+/**
+ * 家庭成员统计数据类
+ * 用于表示某个成员的统计信息，通常用于数据分析和图表展示
+ * 
+ * 该类不是数据库实体，而是通过数据库查询直接映射的结果类，
+ * 表示按成员分组的聚合数据
+ */
 data class MemberStat(
+    /**
+     * 成员名称
+     * 映射数据库查询结果中的member列
+     */
     @ColumnInfo(name = "member")
     val member: String,
     
+    /**
+     * 该成员的总金额
+     * 映射数据库查询结果中的amount列
+     */
     @ColumnInfo(name = "amount")
     val amount: Double,
     
+    /**
+     * 该成员下的记录数量
+     * 映射数据库查询结果中的count列
+     */
     @ColumnInfo(name = "count")
     val count: Int,
     
+    /**
+     * 该成员金额占总金额的百分比（0.0-100.0）
+     * 映射数据库查询结果中的percentage列
+     */
     @ColumnInfo(name = "percentage")
     val percentage: Double = 0.0
 )

app/src/main/java/com/yovinchen/bookkeeping/model/Settings.kt

@@ -0,0 +1,15 @@
+package com.yovinchen.bookkeeping.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "settings")
+data class Settings(
+    @PrimaryKey val id: Int = 1,
+    val monthStartDay: Int = 1, // 月度开始日期，1-28，默认为1号
+    val themeMode: String = "FOLLOW_SYSTEM", // 主题模式：FOLLOW_SYSTEM, LIGHT, DARK
+    val autoBackupEnabled: Boolean = false, // 自动备份开关
+    val autoBackupInterval: Int = 7, // 自动备份间隔（天）
+    val lastBackupTime: Long = 0L, // 上次备份时间
+    val encryptBackup: Boolean = true // 备份加密开关，默认开启
+)

app/src/main/java/com/yovinchen/bookkeeping/model/ThemeMode.kt

@@ -2,9 +2,35 @@ package com.yovinchen.bookkeeping.model
 
 import androidx.compose.ui.graphics.Color
 
+/**
+ * 主题模式密封类
+ * 用于表示应用程序的不同主题设置选项
+ * 通过密封类实现，限制可能的主题模式类型
+ */
 sealed class ThemeMode {
+    /**
+     * 跟随系统主题模式
+     * 应用将根据设备系统的暗色/亮色主题设置自动调整
+     */
     object FOLLOW_SYSTEM : ThemeMode()
+    
+    /**
+     * 固定亮色主题模式
+     * 无论设备系统设置如何，应用将始终使用亮色主题
+     */
     object LIGHT : ThemeMode()
+    
+    /**
+     * 固定暗色主题模式
+     * 无论设备系统设置如何，应用将始终使用暗色主题
+     */
     object DARK : ThemeMode()
+    
+    /**
+     * 自定义主题模式
+     * 允许用户选择自定义的主题颜色
+     * 
+     * @property primaryColor 用户选择的主要颜色，将影响应用的主色调
+     */
     data class CUSTOM(val primaryColor: Color) : ThemeMode()
 }

app/src/main/java/com/yovinchen/bookkeeping/ui/components/DetailedAnalysisReport.kt

@@ -0,0 +1,302 @@
+package com.yovinchen.bookkeeping.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.TransactionType
+import java.text.NumberFormat
+import java.time.YearMonth
+import java.time.format.DateTimeFormatter
+import java.util.*
+
+/**
+ * 详细分析报表组件
+ * 显示按分类统计的详细信息
+ */
+@Composable
+fun DetailedAnalysisReport(
+    records: List<BookkeepingRecord>,
+    startMonth: YearMonth,
+    endMonth: YearMonth,
+    modifier: Modifier = Modifier
+) {
+    val currencyFormatter = NumberFormat.getCurrencyInstance(Locale.CHINA)
+    
+    // 按类型分组
+    val incomeRecords = records.filter { it.type == TransactionType.INCOME }
+    val expenseRecords = records.filter { it.type == TransactionType.EXPENSE }
+    
+    // 按分类统计
+    val incomeByCategory = incomeRecords.groupBy { it.category }
+        .mapValues { it.value.sumOf { record -> record.amount } }
+        .toList()
+        .sortedByDescending { it.second }
+    
+    val expenseByCategory = expenseRecords.groupBy { it.category }
+        .mapValues { it.value.sumOf { record -> record.amount } }
+        .toList()
+        .sortedByDescending { it.second }
+    
+    // 总收入和总支出
+    val totalIncome = incomeRecords.sumOf { it.amount }
+    val totalExpense = expenseRecords.sumOf { it.amount }
+    
+    Column(
+        modifier = modifier,
+        verticalArrangement = Arrangement.spacedBy(16.dp)
+    ) {
+        // 时间范围标题
+        Card(
+            modifier = Modifier.fillMaxWidth(),
+            elevation = CardDefaults.cardElevation(defaultElevation = 2.dp)
+        ) {
+            Text(
+                text = if (startMonth == endMonth) {
+                    "统计期间：${startMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))}"
+                } else {
+                    "统计期间：${startMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))} 至 ${endMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))}"
+                },
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.Bold,
+                modifier = Modifier.padding(16.dp),
+                textAlign = TextAlign.Center
+            )
+        }
+        
+        // 支出分类详情
+        if (expenseByCategory.isNotEmpty()) {
+            CategoryDetailCard(
+                title = "支出分类明细",
+                categoryData = expenseByCategory,
+                total = totalExpense,
+                color = MaterialTheme.colorScheme.error,
+                currencyFormatter = currencyFormatter
+            )
+        }
+        
+        // 收入分类详情
+        if (incomeByCategory.isNotEmpty()) {
+            CategoryDetailCard(
+                title = "收入分类明细",
+                categoryData = incomeByCategory,
+                total = totalIncome,
+                color = MaterialTheme.colorScheme.primary,
+                currencyFormatter = currencyFormatter
+            )
+        }
+        
+        // 分类占比前5名
+        if (expenseByCategory.isNotEmpty()) {
+            TopCategoriesCard(
+                title = "支出TOP5",
+                categoryData = expenseByCategory.take(5),
+                total = totalExpense,
+                color = MaterialTheme.colorScheme.error,
+                currencyFormatter = currencyFormatter
+            )
+        }
+    }
+}
+
+/**
+ * 分类详情卡片
+ */
+@Composable
+private fun CategoryDetailCard(
+    title: String,
+    categoryData: List<Pair<String, Double>>,
+    total: Double,
+    color: Color,
+    currencyFormatter: NumberFormat
+) {
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        elevation = CardDefaults.cardElevation(defaultElevation = 4.dp)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp)
+        ) {
+            Text(
+                text = title,
+                style = MaterialTheme.typography.titleLarge,
+                fontWeight = FontWeight.Bold,
+                color = color,
+                modifier = Modifier.padding(bottom = 16.dp)
+            )
+            
+            // 总计
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 12.dp),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Text(
+                    text = "总计",
+                    style = MaterialTheme.typography.bodyLarge,
+                    fontWeight = FontWeight.Bold
+                )
+                Text(
+                    text = currencyFormatter.format(total),
+                    style = MaterialTheme.typography.bodyLarge,
+                    fontWeight = FontWeight.Bold,
+                    color = color
+                )
+            }
+            
+            HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
+            
+            // 分类列表
+            categoryData.forEach { (category, amount) ->
+                val percentage = if (total > 0) (amount / total * 100) else 0.0
+                
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 8.dp),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Column(modifier = Modifier.weight(1f)) {
+                        Text(
+                            text = category,
+                            style = MaterialTheme.typography.bodyMedium
+                        )
+                        Text(
+                            text = "${String.format("%.1f", percentage)}%",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                    
+                    Text(
+                        text = currencyFormatter.format(amount),
+                        style = MaterialTheme.typography.bodyMedium,
+                        fontWeight = FontWeight.Medium
+                    )
+                }
+                
+                // 进度条
+                LinearProgressIndicator(
+                    progress = (percentage / 100).toFloat(),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(4.dp)
+                        .clip(RoundedCornerShape(2.dp)),
+                    color = color.copy(alpha = 0.8f),
+                    trackColor = color.copy(alpha = 0.2f)
+                )
+            }
+        }
+    }
+}
+
+/**
+ * TOP分类卡片
+ */
+@Composable
+private fun TopCategoriesCard(
+    title: String,
+    categoryData: List<Pair<String, Double>>,
+    total: Double,
+    color: Color,
+    currencyFormatter: NumberFormat
+) {
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        elevation = CardDefaults.cardElevation(defaultElevation = 4.dp),
+        colors = CardDefaults.cardColors(
+            containerColor = MaterialTheme.colorScheme.secondaryContainer
+        )
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp)
+        ) {
+            Text(
+                text = title,
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.Bold,
+                modifier = Modifier.padding(bottom = 12.dp)
+            )
+            
+            categoryData.forEachIndexed { index, (category, amount) ->
+                val percentage = if (total > 0) (amount / total * 100) else 0.0
+                
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Row(
+                        modifier = Modifier.weight(1f),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp),
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        // 排名
+                        Box(
+                            modifier = Modifier
+                                .size(24.dp)
+                                .clip(RoundedCornerShape(12.dp))
+                                .background(
+                                    when (index) {
+                                        0 -> Color(0xFFFFD700) // 金色
+                                        1 -> Color(0xFFC0C0C0) // 银色
+                                        2 -> Color(0xFFCD7F32) // 铜色
+                                        else -> MaterialTheme.colorScheme.surfaceVariant
+                                    }
+                                ),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            Text(
+                                text = "${index + 1}",
+                                style = MaterialTheme.typography.labelSmall,
+                                fontWeight = FontWeight.Bold,
+                                color = if (index < 3) Color.White else MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                        }
+                        
+                        Text(
+                            text = category,
+                            style = MaterialTheme.typography.bodyMedium,
+                            fontWeight = if (index == 0) FontWeight.Bold else FontWeight.Normal
+                        )
+                    }
+                    
+                    Column(
+                        horizontalAlignment = Alignment.End
+                    ) {
+                        Text(
+                            text = currencyFormatter.format(amount),
+                            style = MaterialTheme.typography.bodyMedium,
+                            fontWeight = FontWeight.Medium
+                        )
+                        Text(
+                            text = "${String.format("%.1f", percentage)}%",
+                            style = MaterialTheme.typography.labelSmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/components/MonthlyYearlyReport.kt

@@ -0,0 +1,258 @@
+package com.yovinchen.bookkeeping.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.TransactionType
+import java.text.NumberFormat
+import java.time.LocalDateTime
+import java.time.YearMonth
+import java.time.format.DateTimeFormatter
+import java.util.*
+
+/**
+ * 月度/年度报表组件
+ * 显示收支对比、盈余情况等统计信息
+ */
+@Composable
+fun MonthlyYearlyReport(
+    records: List<BookkeepingRecord>,
+    period: String, // "月度" 或 "年度"
+    startMonth: YearMonth,
+    endMonth: YearMonth,
+    modifier: Modifier = Modifier
+) {
+    val totalIncome = records
+        .filter { it.type == TransactionType.INCOME }
+        .sumOf { it.amount }
+    
+    val totalExpense = records
+        .filter { it.type == TransactionType.EXPENSE }
+        .sumOf { it.amount }
+    
+    val balance = totalIncome - totalExpense
+    val savingsRate = if (totalIncome > 0) {
+        ((totalIncome - totalExpense) / totalIncome * 100).coerceAtLeast(0.0)
+    } else 0.0
+    
+    Card(
+        modifier = modifier.fillMaxWidth(),
+        elevation = CardDefaults.cardElevation(defaultElevation = 4.dp)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp),
+            verticalArrangement = Arrangement.spacedBy(16.dp)
+        ) {
+            // 标题
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = "$period 报表",
+                    style = MaterialTheme.typography.titleLarge,
+                    fontWeight = FontWeight.Bold
+                )
+                
+                Text(
+                    text = if (startMonth == endMonth) {
+                        startMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))
+                    } else {
+                        "${startMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))} - ${endMonth.format(DateTimeFormatter.ofPattern("yyyy年MM月"))}"
+                    },
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+            
+            HorizontalDivider()
+            
+            // 收支对比
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceEvenly
+            ) {
+                // 收入
+                Column(
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Text(
+                        text = "总收入",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                    Text(
+                        text = formatCurrency(totalIncome),
+                        style = MaterialTheme.typography.titleMedium,
+                        fontWeight = FontWeight.Bold,
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                }
+                
+                // 分隔线
+                Box(
+                    modifier = Modifier
+                        .width(1.dp)
+                        .height(40.dp)
+                        .background(MaterialTheme.colorScheme.outlineVariant)
+                )
+                
+                // 支出
+                Column(
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Text(
+                        text = "总支出",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                    Text(
+                        text = formatCurrency(totalExpense),
+                        style = MaterialTheme.typography.titleMedium,
+                        fontWeight = FontWeight.Bold,
+                        color = MaterialTheme.colorScheme.error
+                    )
+                }
+            }
+            
+            // 盈余情况
+            Card(
+                modifier = Modifier.fillMaxWidth(),
+                colors = CardDefaults.cardColors(
+                    containerColor = if (balance >= 0) {
+                        MaterialTheme.colorScheme.primaryContainer
+                    } else {
+                        MaterialTheme.colorScheme.errorContainer
+                    }
+                )
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(12.dp),
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Text(
+                        text = if (balance >= 0) "盈余" else "亏损",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = if (balance >= 0) {
+                            MaterialTheme.colorScheme.onPrimaryContainer
+                        } else {
+                            MaterialTheme.colorScheme.onErrorContainer
+                        }
+                    )
+                    Text(
+                        text = formatCurrency(kotlin.math.abs(balance)),
+                        style = MaterialTheme.typography.headlineSmall,
+                        fontWeight = FontWeight.Bold,
+                        color = if (balance >= 0) {
+                            MaterialTheme.colorScheme.onPrimaryContainer
+                        } else {
+                            MaterialTheme.colorScheme.onErrorContainer
+                        }
+                    )
+                }
+            }
+            
+            // 储蓄率
+            if (totalIncome > 0) {
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = "储蓄率",
+                        style = MaterialTheme.typography.bodyMedium,
+                        modifier = Modifier.weight(1f)
+                    )
+                    
+                    Box(
+                        modifier = Modifier.weight(2f)
+                    ) {
+                        LinearProgressIndicator(
+                            progress = (savingsRate / 100).toFloat().coerceIn(0f, 1f),
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(8.dp)
+                                .clip(RoundedCornerShape(4.dp)),
+                            color = when {
+                                savingsRate >= 30 -> MaterialTheme.colorScheme.primary
+                                savingsRate >= 10 -> MaterialTheme.colorScheme.tertiary
+                                else -> MaterialTheme.colorScheme.error
+                            }
+                        )
+                    }
+                    
+                    Text(
+                        text = "${String.format("%.1f", savingsRate)}%",
+                        style = MaterialTheme.typography.bodyMedium,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(start = 8.dp),
+                        color = when {
+                            savingsRate >= 30 -> MaterialTheme.colorScheme.primary
+                            savingsRate >= 10 -> MaterialTheme.colorScheme.tertiary
+                            else -> MaterialTheme.colorScheme.error
+                        }
+                    )
+                }
+            }
+            
+            // 日均消费
+            val dayCount = if (period == "月度") {
+                // 计算月度天数
+                java.time.temporal.ChronoUnit.DAYS.between(
+                    startMonth.atDay(1),
+                    endMonth.atEndOfMonth()
+                ) + 1
+            } else {
+                // 计算年度天数
+                java.time.temporal.ChronoUnit.DAYS.between(
+                    startMonth.atDay(1),
+                    endMonth.atEndOfMonth()
+                ) + 1
+            }
+            
+            val dailyAverage = if (dayCount > 0) totalExpense / dayCount else 0.0
+            
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Text(
+                    text = "日均消费",
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+                Text(
+                    text = formatCurrency(dailyAverage),
+                    style = MaterialTheme.typography.bodyMedium,
+                    fontWeight = FontWeight.Bold
+                )
+            }
+        }
+    }
+}
+
+/**
+ * 格式化货币
+ */
+private fun formatCurrency(amount: Double): String {
+    val format = NumberFormat.getCurrencyInstance(Locale.CHINA)
+    return format.format(amount)
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/components/RecordItem.kt

@@ -6,10 +6,14 @@ import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.unit.dp
 import com.yovinchen.bookkeeping.model.BookkeepingRecord
 import com.yovinchen.bookkeeping.model.Member
 import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.utils.IconManager
 import java.text.SimpleDateFormat
 import java.util.*
 
@@ -24,6 +28,7 @@ fun RecordItem(
     var showDeleteDialog by remember { mutableStateOf(false) }
     val timeFormat = remember { SimpleDateFormat("HH:mm", Locale.getDefault()) }
     val member = members.find { it.id == record.memberId }
+    val categoryIcon = IconManager.getCategoryIconVector(record.category)
 
     Card(
         modifier = modifier
@@ -36,9 +41,20 @@ fun RecordItem(
             modifier = Modifier
                 .fillMaxWidth()
                 .padding(16.dp),
-            horizontalArrangement = Arrangement.SpaceBetween,
+            horizontalArrangement = Arrangement.spacedBy(12.dp),
             verticalAlignment = Alignment.CenterVertically
         ) {
+            // 左侧分类图标
+            if (categoryIcon != null) {
+                Icon(
+                    imageVector = categoryIcon,
+                    contentDescription = record.category,
+                    modifier = Modifier.size(24.dp),
+                    tint = Color.Unspecified
+                )
+            }
+
+            // 中间内容区域
             Column(
                 modifier = Modifier.weight(1f)
             ) {
@@ -64,7 +80,7 @@ fun RecordItem(
                 )
             }
 
-            // 金额显示
+            // 右侧金额显示
             Text(
                 text = String.format("%.2f", record.amount),
                 style = MaterialTheme.typography.titleMedium,

app/src/main/java/com/yovinchen/bookkeeping/ui/dialog/BudgetEditDialog.kt

@@ -0,0 +1,223 @@
+package com.yovinchen.bookkeeping.ui.dialog
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import com.yovinchen.bookkeeping.model.*
+import java.util.*
+
+/**
+ * 预算编辑对话框
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun BudgetEditDialog(
+    budget: Budget? = null,
+    categories: List<Category>,
+    members: List<Member>,
+    onDismiss: () -> Unit,
+    onConfirm: (Budget) -> Unit
+) {
+    var selectedType by remember { mutableStateOf(budget?.type ?: BudgetType.TOTAL) }
+    var amount by remember { mutableStateOf(budget?.amount?.toString() ?: "") }
+    var selectedCategory by remember { mutableStateOf(budget?.categoryName) }
+    var selectedMemberId by remember { mutableStateOf(budget?.memberId) }
+    var alertThreshold by remember { mutableStateOf((budget?.alertThreshold ?: 0.8) * 100) }
+    
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = {
+            Text(if (budget == null) "添加预算" else "编辑预算")
+        },
+        text = {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .verticalScroll(rememberScrollState()),
+                verticalArrangement = Arrangement.spacedBy(16.dp)
+            ) {
+                // 预算类型选择
+                Text(
+                    text = "预算类型",
+                    style = MaterialTheme.typography.labelMedium
+                )
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(8.dp)
+                ) {
+                    FilterChip(
+                        selected = selectedType == BudgetType.TOTAL,
+                        onClick = { selectedType = BudgetType.TOTAL },
+                        label = { Text("总预算") }
+                    )
+                    FilterChip(
+                        selected = selectedType == BudgetType.CATEGORY,
+                        onClick = { selectedType = BudgetType.CATEGORY },
+                        label = { Text("分类预算") }
+                    )
+                    FilterChip(
+                        selected = selectedType == BudgetType.MEMBER,
+                        onClick = { selectedType = BudgetType.MEMBER },
+                        label = { Text("成员预算") }
+                    )
+                }
+                
+                // 金额输入
+                OutlinedTextField(
+                    value = amount,
+                    onValueChange = { amount = it.filter { char -> char.isDigit() || char == '.' } },
+                    label = { Text("预算金额") },
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
+                    modifier = Modifier.fillMaxWidth(),
+                    singleLine = true
+                )
+                
+                // 分类选择（仅在分类预算时显示）
+                if (selectedType == BudgetType.CATEGORY) {
+                    var expanded by remember { mutableStateOf(false) }
+                    
+                    ExposedDropdownMenuBox(
+                        expanded = expanded,
+                        onExpandedChange = { expanded = !expanded }
+                    ) {
+                        OutlinedTextField(
+                            value = selectedCategory ?: "",
+                            onValueChange = {},
+                            label = { Text("选择分类") },
+                            readOnly = true,
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .menuAnchor(),
+                            trailingIcon = {
+                                ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded)
+                            }
+                        )
+                        
+                        ExposedDropdownMenu(
+                            expanded = expanded,
+                            onDismissRequest = { expanded = false }
+                        ) {
+                            categories.forEach { category ->
+                                DropdownMenuItem(
+                                    text = { Text(category.name) },
+                                    onClick = {
+                                        selectedCategory = category.name
+                                        expanded = false
+                                    }
+                                )
+                            }
+                        }
+                    }
+                }
+                
+                // 成员选择（仅在成员预算时显示）
+                if (selectedType == BudgetType.MEMBER) {
+                    var expanded by remember { mutableStateOf(false) }
+                    val selectedMember = members.find { it.id == selectedMemberId }
+                    
+                    ExposedDropdownMenuBox(
+                        expanded = expanded,
+                        onExpandedChange = { expanded = !expanded }
+                    ) {
+                        OutlinedTextField(
+                            value = selectedMember?.name ?: "",
+                            onValueChange = {},
+                            label = { Text("选择成员") },
+                            readOnly = true,
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .menuAnchor(),
+                            trailingIcon = {
+                                ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded)
+                            }
+                        )
+                        
+                        ExposedDropdownMenu(
+                            expanded = expanded,
+                            onDismissRequest = { expanded = false }
+                        ) {
+                            members.forEach { member ->
+                                DropdownMenuItem(
+                                    text = { Text(member.name) },
+                                    onClick = {
+                                        selectedMemberId = member.id
+                                        expanded = false
+                                    }
+                                )
+                            }
+                        }
+                    }
+                }
+                
+                // 预警阈值
+                Column {
+                    Text(
+                        text = "预警阈值: ${alertThreshold.toInt()}%",
+                        style = MaterialTheme.typography.labelMedium
+                    )
+                    Slider(
+                        value = alertThreshold.toFloat(),
+                        onValueChange = { alertThreshold = it.toDouble() },
+                        valueRange = 50f..95f,
+                        steps = 8,
+                        modifier = Modifier.fillMaxWidth()
+                    )
+                    Text(
+                        text = "当使用金额达到预算的 ${alertThreshold.toInt()}% 时提醒",
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(
+                onClick = {
+                    val amountValue = amount.toDoubleOrNull()
+                    if (amountValue != null && amountValue > 0) {
+                        val calendar = Calendar.getInstance()
+                        val startDate = budget?.startDate ?: calendar.time
+                        
+                        // 设置结束日期为当月最后一天
+                        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH))
+                        calendar.set(Calendar.HOUR_OF_DAY, 23)
+                        calendar.set(Calendar.MINUTE, 59)
+                        calendar.set(Calendar.SECOND, 59)
+                        val endDate = calendar.time
+                        
+                        val newBudget = Budget(
+                            id = budget?.id ?: 0,
+                            type = selectedType,
+                            amount = amountValue,
+                            categoryName = if (selectedType == BudgetType.CATEGORY) selectedCategory else null,
+                            memberId = if (selectedType == BudgetType.MEMBER) selectedMemberId else null,
+                            startDate = startDate,
+                            endDate = endDate,
+                            alertThreshold = alertThreshold / 100,
+                            isEnabled = budget?.isEnabled ?: true,
+                            createdAt = budget?.createdAt ?: Date(),
+                            updatedAt = Date()
+                        )
+                        onConfirm(newBudget)
+                    }
+                },
+                enabled = amount.toDoubleOrNull() != null && amount.toDouble() > 0 &&
+                        (selectedType != BudgetType.CATEGORY || selectedCategory != null) &&
+                        (selectedType != BudgetType.MEMBER || selectedMemberId != null)
+            ) {
+                Text("确定")
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss) {
+                Text("取消")
+            }
+        }
+    )
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/dialog/CategoryManagementDialog.kt

@@ -1,38 +1,23 @@
 package com.yovinchen.bookkeeping.ui.dialog
 
-import android.util.Log
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.Delete
-import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.FilterChip
-import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
-import androidx.compose.material3.OutlinedTextField
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.unit.dp
 import com.yovinchen.bookkeeping.model.Category
 import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.utils.IconManager
 
 private const val TAG = "CategoryManagementDialog"
 
@@ -41,233 +26,217 @@ private const val TAG = "CategoryManagementDialog"
 fun CategoryManagementDialog(
     onDismiss: () -> Unit,
     categories: List<Category>,
-    onAddCategory: (String, TransactionType) -> Unit,
+    onAddCategory: (String, TransactionType, Int?) -> Unit,
     onDeleteCategory: (Category) -> Unit,
-    onUpdateCategory: (Category, String) -> Unit,
+    onUpdateCategory: (Category, String, Int?) -> Unit,
     selectedType: TransactionType,
     onTypeChange: (TransactionType) -> Unit
 ) {
-    var newCategoryName by remember { mutableStateOf("") }
-    var showDialog by remember { mutableStateOf(true) }
-    var showDeleteDialog by remember { mutableStateOf(false) }
-    var showEditDialog by remember { mutableStateOf(false) }
-    var selectedCategory: Category? by remember { mutableStateOf(null) }
-    var editingCategoryName by remember { mutableStateOf("") }
-    val filteredCategories = categories.filter { it.type == selectedType }
+    var showAddDialog by remember { mutableStateOf(false) }
+    var editingCategory by remember { mutableStateOf<Category?>(null) }
 
-    Log.d(TAG, "Dialog state - showDialog: $showDialog, showDeleteDialog: $showDeleteDialog")
-    Log.d(TAG, "Selected category: ${selectedCategory?.name}")
-
-    if (showDialog) {
-        AlertDialog(
-            onDismissRequest = { 
-                Log.d(TAG, "Main dialog dismiss requested")
-                showDialog = false
-                onDismiss()
-            },
-            title = { Text("类别管理") },
-            text = {
-                Column(
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text("类别管理") },
+        text = {
+            Column {
+                // 类型选择器
+                Row(
                     modifier = Modifier
                         .fillMaxWidth()
-                        .padding(vertical = 8.dp)
+                        .padding(bottom = 8.dp),
+                    horizontalArrangement = Arrangement.spacedBy(8.dp)
                 ) {
-                    // 类型选择
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        horizontalArrangement = Arrangement.SpaceEvenly
-                    ) {
+                    TransactionType.values().forEach { type ->
                         FilterChip(
-                            selected = selectedType == TransactionType.EXPENSE,
-                            onClick = { 
-                                Log.d(TAG, "Switching to EXPENSE type")
-                                onTypeChange(TransactionType.EXPENSE) 
-                            },
-                            label = { Text("支出") }
-                        )
-                        FilterChip(
-                            selected = selectedType == TransactionType.INCOME,
-                            onClick = { 
-                                Log.d(TAG, "Switching to INCOME type")
-                                onTypeChange(TransactionType.INCOME) 
-                            },
-                            label = { Text("收入") }
-                        )
-                    }
-
-                    Spacer(modifier = Modifier.height(16.dp))
-
-                    // 添加新类别
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        verticalAlignment = Alignment.CenterVertically
-                    ) {
-                        OutlinedTextField(
-                            value = newCategoryName,
-                            onValueChange = { newCategoryName = it },
-                            label = { Text("新类别名称") },
-                            modifier = Modifier.weight(1f)
-                        )
-                        Spacer(modifier = Modifier.width(8.dp))
-                        IconButton(
-                            onClick = {
-                                if (newCategoryName.isNotBlank()) {
-                                    Log.d(TAG, "Adding new category: $newCategoryName")
-                                    onAddCategory(newCategoryName, selectedType)
-                                    newCategoryName = ""
-                                }
+                            selected = type == selectedType,
+                            onClick = { onTypeChange(type) },
+                            label = { 
+                                Text(when (type) {
+                                    TransactionType.EXPENSE -> "支出"
+                                    TransactionType.INCOME -> "收入"
+                                })
                             }
-                        ) {
-                            Icon(Icons.Default.Add, contentDescription = "添加类别")
-                        }
+                        )
                     }
+                }
 
-                    Spacer(modifier = Modifier.height(16.dp))
-
-                    // 类别列表
-                    LazyColumn(
-                        modifier = Modifier.fillMaxWidth(),
-                        verticalArrangement = Arrangement.spacedBy(8.dp)
-                    ) {
-                        items(filteredCategories) { category ->
+                // 类别列表
+                LazyColumn(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f)
+                ) {
+                    items(categories.filter { it.type == selectedType }) { category ->
+                        Row(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(vertical = 8.dp)
+                                .clickable { editingCategory = category },
+                            horizontalArrangement = Arrangement.SpaceBetween,
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
                             Row(
-                                modifier = Modifier.fillMaxWidth(),
-                                horizontalArrangement = Arrangement.SpaceBetween,
-                                verticalAlignment = Alignment.CenterVertically
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier.weight(1f)
                             ) {
-                                Text(
-                                    text = category.name,
-                                    modifier = Modifier
-                                        .weight(1f)
-                                        .clickable {
-                                            selectedCategory = category
-                                            editingCategoryName = category.name
-                                            showEditDialog = true
-                                        }
-                                )
-                                IconButton(
-                                    onClick = { 
-                                        Log.d(TAG, "Selected category for deletion: ${category.name}")
-                                        selectedCategory = category
-                                        showDeleteDialog = true
+                                // 显示类别图标
+                                if (category.icon != null) {
+                                    Icon(
+                                        imageVector = ImageVector.vectorResource(id = category.icon),
+                                        contentDescription = null,
+                                        modifier = Modifier.size(24.dp),
+                                        tint = Color.Unspecified
+                                    )
+                                } else {
+                                    IconManager.getCategoryIconVector(category.name)?.let { icon ->
+                                        Icon(
+                                            imageVector = icon,
+                                            contentDescription = null,
+                                            modifier = Modifier.size(24.dp),
+                                            tint = Color.Unspecified
+                                        )
                                     }
-                                ) {
-                                    Icon(Icons.Default.Delete, contentDescription = "删除类别")
                                 }
+                                
+                                Spacer(modifier = Modifier.width(8.dp))
+                                Text(category.name)
+                            }
+
+                            IconButton(
+                                onClick = { onDeleteCategory(category) },
+                                enabled = categories.size > 1
+                            ) {
+                                Icon(
+                                    Icons.Default.Delete,
+                                    contentDescription = "删除",
+                                    tint = if (categories.size > 1)
+                                        MaterialTheme.colorScheme.error
+                                    else
+                                        MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
+                                )
                             }
                         }
                     }
                 }
-            },
-            confirmButton = {
-                TextButton(
-                    onClick = { 
-                        Log.d(TAG, "Main dialog confirmed")
-                        showDialog = false
-                        onDismiss()
-                    }
+
+                // 添加类别按钮
+                Button(
+                    onClick = { showAddDialog = true },
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(top = 8.dp)
                 ) {
-                    Text("完成")
+                    Icon(Icons.Default.Add, contentDescription = null)
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Text("添加类别")
                 }
             }
-        )
-    }
+        },
+        confirmButton = {
+            TextButton(onClick = onDismiss) {
+                Text("完成")
+            }
+        }
+    )
 
-    // 删除确认对话框
-    if (showDeleteDialog && selectedCategory != null) {
-        AlertDialog(
-            onDismissRequest = { 
-                Log.d(TAG, "Delete dialog dismissed")
-                showDeleteDialog = false
-                selectedCategory = null
-            },
-            title = { Text("确认删除") },
-            text = { 
-                Text(
-                    text = buildString {
-                        append("确定要删除类别 ")
-                        append(selectedCategory?.name ?: "")
-                        append(" 吗？")
-                    }
-                )
-            },
-            confirmButton = {
-                TextButton(
-                    onClick = {
-                        try {
-                            selectedCategory?.let { category ->
-                                Log.d(TAG, "Confirming deletion of category: ${category.name}")
-                                onDeleteCategory(category)
-                            }
-                        } catch (e: Exception) {
-                            Log.e(TAG, "Error during category deletion callback", e)
-                            e.printStackTrace()
-                        } finally {
-                            showDeleteDialog = false
-                            selectedCategory = null
-                        }
-                    }
-                ) {
-                    Text("确定")
-                }
-            },
-            dismissButton = {
-                TextButton(
-                    onClick = { 
-                        Log.d(TAG, "Canceling deletion")
-                        showDeleteDialog = false
-                        selectedCategory = null
-                    }
-                ) {
-                    Text("取消")
-                }
+    // 添加类别对话框
+    if (showAddDialog) {
+        CategoryEditDialog(
+            onDismiss = { showAddDialog = false },
+            onConfirm = { name, iconResId ->
+                onAddCategory(name, selectedType, iconResId)
+                showAddDialog = false
             }
         )
     }
 
     // 编辑类别对话框
-    if (showEditDialog && selectedCategory != null) {
-        AlertDialog(
-            onDismissRequest = {
-                showEditDialog = false
-                selectedCategory = null
-                editingCategoryName = ""
+    editingCategory?.let { category ->
+        CategoryEditDialog(
+            onDismiss = { editingCategory = null },
+            onConfirm = { name, iconResId ->
+                onUpdateCategory(category, name, iconResId)
+                editingCategory = null
             },
-            title = { Text("编辑类别") },
-            text = {
-                OutlinedTextField(
-                    value = editingCategoryName,
-                    onValueChange = { editingCategoryName = it },
-                    label = { Text("类别名称") }
-                )
-            },
-            confirmButton = {
-                TextButton(
-                    onClick = {
-                        if (editingCategoryName.isNotBlank()) {
-                            selectedCategory?.let { category ->
-                                onUpdateCategory(category, editingCategoryName)
-                            }
-                        }
-                        showEditDialog = false
-                        selectedCategory = null
-                        editingCategoryName = ""
-                    }
-                ) {
-                    Text("确定")
-                }
-            },
-            dismissButton = {
-                TextButton(
-                    onClick = {
-                        showEditDialog = false
-                        selectedCategory = null
-                        editingCategoryName = ""
-                    }
-                ) {
-                    Text("取消")
-                }
-            }
+            initialName = category.name,
+            initialIcon = category.icon
+        )
+    }
+}
+
+@Composable
+private fun CategoryEditDialog(
+    onDismiss: () -> Unit,
+    onConfirm: (String, Int?) -> Unit,
+    initialName: String = "",
+    initialIcon: Int? = null
+) {
+    var name by remember { mutableStateOf(initialName) }
+    var selectedIcon by remember { mutableStateOf(initialIcon) }
+    var showIconPicker by remember { mutableStateOf(false) }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(if (initialName.isEmpty()) "添加类别" else "编辑类别") },
+        text = {
+            Column(
+                modifier = Modifier.fillMaxWidth(),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                OutlinedTextField(
+                    value = name,
+                    onValueChange = { name = it },
+                    label = { Text("名称") },
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                // 图标选择按钮
+                Button(
+                    onClick = { showIconPicker = true },
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    selectedIcon?.let { iconResId ->
+                        Icon(
+                            imageVector = ImageVector.vectorResource(id = iconResId),
+                            contentDescription = null,
+                            modifier = Modifier.size(24.dp),
+                            tint = Color.Unspecified
+                        )
+                        Spacer(modifier = Modifier.width(8.dp))
+                    }
+                    Text(if (selectedIcon == null) "选择图标" else "更改图标")
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(
+                onClick = {
+                    if (name.isNotBlank()) {
+                        onConfirm(name, selectedIcon)
+                    }
+                }
+            ) {
+                Text("确定")
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss) {
+                Text("取消")
+            }
+        }
+    )
+
+    if (showIconPicker) {
+        IconPickerDialog(
+            onDismiss = { showIconPicker = false },
+            onIconSelected = { 
+                selectedIcon = it
+                showIconPicker = false
+            },
+            selectedIcon = selectedIcon,
+            isMemberIcon = false,
+            title = "选择类别图标"
         )
     }
 }

app/src/main/java/com/yovinchen/bookkeeping/ui/dialog/IconPickerDialog.kt

@@ -0,0 +1,61 @@
+package com.yovinchen.bookkeeping.ui.dialog
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.grid.GridCells
+import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
+import androidx.compose.foundation.lazy.grid.items
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
+import androidx.compose.ui.unit.dp
+import com.yovinchen.bookkeeping.utils.IconManager
+
+@Composable
+fun IconPickerDialog(
+    onDismiss: () -> Unit,
+    onIconSelected: (Int) -> Unit,
+    selectedIcon: Int? = null,
+    isMemberIcon: Boolean = false,
+    title: String = "选择图标"
+) {
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(title) },
+        text = {
+            LazyVerticalGrid(
+                columns = GridCells.Fixed(4),
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(300.dp),
+                horizontalArrangement = Arrangement.spacedBy(8.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                val icons = if (isMemberIcon) {
+                    IconManager.getAllMemberIcons()
+                } else {
+                    IconManager.getAllCategoryIcons()
+                }
+
+                items(icons) { iconResId ->
+                    Icon(
+                        imageVector = ImageVector.vectorResource(id = iconResId),
+                        contentDescription = null,
+                        modifier = Modifier
+                            .size(40.dp)
+                            .clickable { onIconSelected(iconResId) },
+                        tint = if (selectedIcon == iconResId) MaterialTheme.colorScheme.primary else Color.Unspecified
+                    )
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(onClick = onDismiss) {
+                Text("取消")
+            }
+        }
+    )
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/dialog/MemberManagementDialog.kt

@@ -7,20 +7,25 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.Person
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.unit.dp
 import com.yovinchen.bookkeeping.model.Member
+import com.yovinchen.bookkeeping.utils.IconManager
 
 @Composable
 fun MemberManagementDialog(
     onDismiss: () -> Unit,
     members: List<Member>,
-    onAddMember: (String, String) -> Unit,
+    onAddMember: (String, String, Int?) -> Unit,
     onDeleteMember: (Member) -> Unit,
-    onUpdateMember: (Member, String, String) -> Unit
+    onUpdateMember: (Member, String, String, Int?) -> Unit
 ) {
     var showAddDialog by remember { mutableStateOf(false) }
     var selectedMember by remember { mutableStateOf<Member?>(null) }
@@ -43,41 +48,65 @@ fun MemberManagementDialog(
                             horizontalArrangement = Arrangement.SpaceBetween,
                             verticalAlignment = Alignment.CenterVertically
                         ) {
-                            Column(modifier = Modifier.weight(1f)) {
-                                Text(
-                                    text = member.name,
-                                    style = MaterialTheme.typography.titleMedium
-                                )
-                                if (member.description.isNotEmpty()) {
-                                    Text(
-                                        text = member.description,
-                                        style = MaterialTheme.typography.bodyMedium,
-                                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier.weight(1f)
+                            ) {
+                                // 显示成员图标
+                                if (member.icon != null) {
+                                    Icon(
+                                        imageVector = ImageVector.vectorResource(member.icon),
+                                        contentDescription = null,
+                                        modifier = Modifier.size(24.dp),
+                                        tint = Color.Unspecified
                                     )
+                                } else {
+                                    IconManager.getMemberIconVector(member.name)?.let { icon ->
+                                        Icon(
+                                            imageVector = icon,
+                                            contentDescription = null,
+                                            modifier = Modifier.size(24.dp),
+                                            tint = Color.Unspecified
+                                        )
+                                    }
+                                }
+                                
+                                Spacer(modifier = Modifier.width(8.dp))
+                                
+                                Column {
+                                    Text(
+                                        text = member.name,
+                                        style = MaterialTheme.typography.titleMedium
+                                    )
+                                    if (member.description.isNotEmpty()) {
+                                        Text(
+                                            text = member.description,
+                                            style = MaterialTheme.typography.bodyMedium,
+                                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                                        )
+                                    }
                                 }
                             }
+
                             Row {
                                 IconButton(onClick = { selectedMember = member }) {
-                                    Icon(Icons.Default.Edit, "编辑成员")
+                                    Icon(Icons.Default.Edit, contentDescription = "编辑")
                                 }
                                 IconButton(onClick = { onDeleteMember(member) }) {
-                                    Icon(Icons.Default.Delete, "删除成员")
+                                    Icon(Icons.Default.Delete, contentDescription = "删除")
                                 }
                             }
                         }
-                        if (members.indexOf(member) < members.size - 1) {
-                            HorizontalDivider()
-                        }
                     }
                 }
-                
+
                 Button(
                     onClick = { showAddDialog = true },
                     modifier = Modifier
                         .fillMaxWidth()
-                        .padding(top = 16.dp)
+                        .padding(top = 8.dp)
                 ) {
-                    Icon(Icons.Default.Add, "添加成员")
+                    Icon(Icons.Default.Add, contentDescription = null)
                     Spacer(modifier = Modifier.width(8.dp))
                     Text("添加成员")
                 }
@@ -85,32 +114,31 @@ fun MemberManagementDialog(
         },
         confirmButton = {
             TextButton(onClick = onDismiss) {
-                Text("关闭")
+                Text("完成")
             }
         }
     )
 
-    // 添加成员对话框
     if (showAddDialog) {
         MemberEditDialog(
             onDismiss = { showAddDialog = false },
-            onConfirm = { name, description ->
-                onAddMember(name, description)
+            onConfirm = { name, description, iconResId ->
+                onAddMember(name, description, iconResId)
                 showAddDialog = false
             }
         )
     }
 
-    // 编辑成员对话框
     selectedMember?.let { member ->
         MemberEditDialog(
             onDismiss = { selectedMember = null },
-            onConfirm = { name, description ->
-                onUpdateMember(member, name, description)
+            onConfirm = { name, description, iconResId ->
+                onUpdateMember(member, name, description, iconResId)
                 selectedMember = null
             },
             initialName = member.name,
-            initialDescription = member.description
+            initialDescription = member.description,
+            initialIcon = member.icon
         )
     }
 }
@@ -118,45 +146,63 @@ fun MemberManagementDialog(
 @Composable
 private fun MemberEditDialog(
     onDismiss: () -> Unit,
-    onConfirm: (String, String) -> Unit,
+    onConfirm: (String, String, Int?) -> Unit,
     initialName: String = "",
-    initialDescription: String = ""
+    initialDescription: String = "",
+    initialIcon: Int? = null
 ) {
     var name by remember { mutableStateOf(initialName) }
     var description by remember { mutableStateOf(initialDescription) }
+    var selectedIcon by remember { mutableStateOf(initialIcon) }
+    var showIconPicker by remember { mutableStateOf(false) }
 
     AlertDialog(
         onDismissRequest = onDismiss,
         title = { Text(if (initialName.isEmpty()) "添加成员" else "编辑成员") },
         text = {
             Column(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .padding(vertical = 8.dp)
+                modifier = Modifier.fillMaxWidth(),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
             ) {
                 OutlinedTextField(
                     value = name,
                     onValueChange = { name = it },
-                    label = { Text("成员名称") },
+                    label = { Text("名称") },
                     modifier = Modifier.fillMaxWidth()
                 )
-                Spacer(modifier = Modifier.height(16.dp))
+
                 OutlinedTextField(
                     value = description,
                     onValueChange = { description = it },
-                    label = { Text("描述（可选）") },
+                    label = { Text("描述") },
                     modifier = Modifier.fillMaxWidth()
                 )
+
+                // 图标选择按钮
+                Button(
+                    onClick = { showIconPicker = true },
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    selectedIcon?.let { iconResId ->
+                        Icon(
+                            imageVector = ImageVector.vectorResource(iconResId),
+                            contentDescription = null,
+                            modifier = Modifier.size(24.dp),
+                            tint = Color.Unspecified
+                        )
+                        Spacer(modifier = Modifier.width(8.dp))
+                    }
+                    Text(if (selectedIcon == null) "选择图标" else "更改图标")
+                }
             }
         },
         confirmButton = {
             TextButton(
                 onClick = {
                     if (name.isNotBlank()) {
-                        onConfirm(name.trim(), description.trim())
+                        onConfirm(name, description, selectedIcon)
                     }
-                },
-                enabled = name.isNotBlank()
+                }
             ) {
                 Text("确定")
             }
@@ -167,4 +213,17 @@ private fun MemberEditDialog(
             }
         }
     )
+
+    if (showIconPicker) {
+        IconPickerDialog(
+            onDismiss = { showIconPicker = false },
+            onIconSelected = { 
+                selectedIcon = it
+                showIconPicker = false
+            },
+            selectedIcon = selectedIcon,
+            isMemberIcon = true,
+            title = "选择成员图标"
+        )
+    }
 }

app/src/main/java/com/yovinchen/bookkeeping/ui/navigation/MainNavigation.kt

@@ -1,20 +1,13 @@
 package com.yovinchen.bookkeeping.ui.navigation
 
 import androidx.compose.foundation.layout.padding
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.List
-import androidx.compose.material.icons.filled.Analytics
-import androidx.compose.material.icons.filled.Settings
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.Icon
-import androidx.compose.material3.NavigationBar
-import androidx.compose.material3.NavigationBarItem
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
+import androidx.compose.foundation.layout.size
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
 import androidx.navigation.NavGraph.Companion.findStartDestination
 import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
@@ -22,20 +15,42 @@ import androidx.navigation.compose.composable
 import androidx.navigation.compose.currentBackStackEntryAsState
 import androidx.navigation.compose.rememberNavController
 import androidx.navigation.navArgument
+import com.yovinchen.bookkeeping.R
 import com.yovinchen.bookkeeping.model.AnalysisType
 import com.yovinchen.bookkeeping.model.ThemeMode
 import com.yovinchen.bookkeeping.ui.screen.*
+import androidx.compose.material3.*
+import androidx.compose.ui.unit.dp
 import java.time.YearMonth
 import java.time.format.DateTimeFormatter
 
 sealed class Screen(
     val route: String,
     val title: String,
-    val icon: ImageVector? = null
+    val iconResId: Int? = null
 ) {
-    object Home : Screen("home", "记账", Icons.AutoMirrored.Filled.List)
-    object Analysis : Screen("analysis", "分析", Icons.Default.Analytics)
-    object Settings : Screen("settings", "设置", Icons.Default.Settings)
+    @Composable
+    fun icon(): ImageVector? = iconResId?.let { ImageVector.vectorResource(it) }
+
+    object Home : Screen(
+        "home", 
+        "记账",
+        iconResId = R.drawable.account
+    )
+    object Analysis : Screen(
+        "analysis", 
+        "分析",
+        iconResId = R.drawable.piechart
+    )
+    object Settings : Screen(
+        "settings", 
+        "设置",
+        iconResId = R.drawable.setting
+    )
+    object Budget : Screen(
+        "budget",
+        "预算管理"
+    )
     object CategoryDetail : Screen(
         "category_detail/{category}/{startMonth}/{endMonth}",
         "分类详情"
@@ -75,18 +90,33 @@ fun MainNavigation(
     onThemeChange: (ThemeMode) -> Unit
 ) {
     val navController = rememberNavController()
-
+    val items = listOf(
+        Screen.Home,
+        Screen.Analysis,
+        Screen.Settings
+    )
+    
     Scaffold(
         bottomBar = {
             NavigationBar {
                 val navBackStackEntry by navController.currentBackStackEntryAsState()
                 val currentRoute = navBackStackEntry?.destination?.route
-
-                Screen.bottomNavigationItems().forEach { screen ->
+                
+                items.forEach { screen ->
+                    val selected = currentRoute == screen.route
                     NavigationBarItem(
-                        icon = { Icon(screen.icon!!, contentDescription = screen.title) },
+                        icon = { 
+                            screen.icon()?.let { icon ->
+                                Icon(
+                                    imageVector = icon,
+                                    contentDescription = screen.title,
+                                    modifier = Modifier.size(24.dp),
+                                    tint = Color.Unspecified
+                                )
+                            }
+                        },
                         label = { Text(screen.title) },
-                        selected = currentRoute == screen.route,
+                        selected = selected,
                         onClick = {
                             navController.navigate(screen.route) {
                                 popUpTo(navController.graph.findStartDestination().id) {
@@ -122,9 +152,16 @@ fun MainNavigation(
             composable(Screen.Settings.route) {
                 SettingsScreen(
                     currentTheme = currentTheme,
-                    onThemeChange = onThemeChange
+                    onThemeChange = onThemeChange,
+                    onNavigateToBudget = {
+                        navController.navigate(Screen.Budget.route)
+                    }
                 )
             }
+            
+            composable(Screen.Budget.route) {
+                BudgetScreen()
+            }
 
             composable(
                 route = Screen.CategoryDetail.route,

app/src/main/java/com/yovinchen/bookkeeping/ui/screen/AnalysisScreen.kt

@@ -38,12 +38,14 @@ import com.yovinchen.bookkeeping.model.MemberStat
 import com.yovinchen.bookkeeping.ui.components.CategoryPieChart
 import com.yovinchen.bookkeeping.ui.components.CategoryStatItem
 import com.yovinchen.bookkeeping.ui.components.DateRangePicker
+import com.yovinchen.bookkeeping.ui.components.DetailedAnalysisReport
+import com.yovinchen.bookkeeping.ui.components.MonthlyYearlyReport
 import com.yovinchen.bookkeeping.ui.components.TrendLineChart
 import com.yovinchen.bookkeeping.viewmodel.AnalysisViewModel
 import java.time.YearMonth
 
 enum class ViewMode {
-    CATEGORY, MEMBER
+    CATEGORY, MEMBER, REPORT
 }
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -93,7 +95,13 @@ fun AnalysisScreen(
                     Button(
                         onClick = { showViewModeMenu = true }
                     ) {
-                        Text(if (currentViewMode == ViewMode.CATEGORY) "分类" else "成员")
+                        Text(
+                            when {
+                                currentViewMode == ViewMode.CATEGORY -> "分类"
+                                currentViewMode == ViewMode.MEMBER -> "成员"
+                                else -> "报表"
+                            }
+                        )
                         Icon(Icons.Default.ArrowDropDown, "切换视图")
                     }
                     DropdownMenu(
@@ -114,6 +122,13 @@ fun AnalysisScreen(
                                 showViewModeMenu = false
                             }
                         )
+                        DropdownMenuItem(
+                            text = { Text("报表") },
+                            onClick = {
+                                currentViewMode = ViewMode.REPORT
+                                showViewModeMenu = false
+                            }
+                        )
                     }
                 }
 
@@ -159,41 +174,68 @@ fun AnalysisScreen(
                         }
                     }
                     else -> {
-                        // 饼图视图
-                        item {
-                            CategoryPieChart(
-                                categoryData = categoryStats.map { Pair(it.category, it.percentage.toFloat()) },
-                                memberData = memberStats.map { Pair(it.member, it.percentage.toFloat()) },
-                                currentViewMode = currentViewMode == ViewMode.MEMBER,
-                                modifier = Modifier
-                                    .fillMaxWidth()
-                                    .height(200.dp)
-                                    .padding(bottom = 16.dp),
-                                onCategoryClick = { category ->
-                                    if (currentViewMode == ViewMode.CATEGORY) {
-                                        onNavigateToCategoryDetail(category, startMonth, endMonth)
-                                    } else {
-                                        onNavigateToMemberDetail(category, startMonth, endMonth, selectedAnalysisType)
+                        if (currentViewMode == ViewMode.REPORT) {
+                            // 报表视图
+                            item {
+                                MonthlyYearlyReport(
+                                    records = records,
+                                    period = if (startMonth == endMonth) "月度" else "年度",
+                                    startMonth = startMonth,
+                                    endMonth = endMonth,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(vertical = 8.dp)
+                                )
+                            }
+                            
+                            // 详细分析报表
+                            item {
+                                DetailedAnalysisReport(
+                                    records = records,
+                                    startMonth = startMonth,
+                                    endMonth = endMonth,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(top = 16.dp)
+                                )
+                            }
+                        } else {
+                            // 饼图视图
+                            item {
+                                CategoryPieChart(
+                                    categoryData = categoryStats.map { Pair(it.category, it.percentage.toFloat()) },
+                                    memberData = memberStats.map { Pair(it.member, it.percentage.toFloat()) },
+                                    currentViewMode = currentViewMode == ViewMode.MEMBER,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .height(200.dp)
+                                        .padding(bottom = 16.dp),
+                                    onCategoryClick = { category ->
+                                        if (currentViewMode == ViewMode.CATEGORY) {
+                                            onNavigateToCategoryDetail(category, startMonth, endMonth)
+                                        } else {
+                                            onNavigateToMemberDetail(category, startMonth, endMonth, selectedAnalysisType)
+                                        }
                                     }
-                                }
-                            )
-                        }
+                                )
+                            }
 
-                        // 统计列表
-                        items(if (currentViewMode == ViewMode.CATEGORY) categoryStats else memberStats) { stat ->
-                            val category = if (stat is CategoryStat) stat.category else null
-                            val member = if (stat is MemberStat) stat.member else null
+                            // 统计列表
+                            items(if (currentViewMode == ViewMode.CATEGORY) categoryStats else memberStats) { stat ->
+                                val category = if (stat is CategoryStat) stat.category else null
+                                val member = if (stat is MemberStat) stat.member else null
 
-                            CategoryStatItem(
-                                stat = stat,
-                                onClick = {
-                                    if (currentViewMode == ViewMode.CATEGORY && category != null) {
-                                        onNavigateToCategoryDetail(category, startMonth, endMonth)
-                                    } else if (currentViewMode == ViewMode.MEMBER && member != null) {
-                                        onNavigateToMemberDetail(member, startMonth, endMonth, selectedAnalysisType)
+                                CategoryStatItem(
+                                    stat = stat,
+                                    onClick = {
+                                        if (currentViewMode == ViewMode.CATEGORY && category != null) {
+                                            onNavigateToCategoryDetail(category, startMonth, endMonth)
+                                        } else if (currentViewMode == ViewMode.MEMBER && member != null) {
+                                            onNavigateToMemberDetail(member, startMonth, endMonth, selectedAnalysisType)
+                                        }
                                     }
-                                }
-                            )
+                                )
+                            }
                         }
                     }
                 }

app/src/main/java/com/yovinchen/bookkeeping/ui/screen/BudgetScreen.kt

@@ -0,0 +1,411 @@
+package com.yovinchen.bookkeeping.ui.screen
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.yovinchen.bookkeeping.model.*
+import com.yovinchen.bookkeeping.ui.dialog.BudgetEditDialog
+import com.yovinchen.bookkeeping.viewmodel.BudgetViewModel
+import com.yovinchen.bookkeeping.viewmodel.HomeViewModel
+import com.yovinchen.bookkeeping.viewmodel.MemberViewModel
+import java.text.NumberFormat
+import java.util.Locale
+
+/**
+ * 预算管理界面
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun BudgetScreen(
+    viewModel: BudgetViewModel = viewModel(),
+    homeViewModel: HomeViewModel = viewModel(),
+    memberViewModel: MemberViewModel = viewModel()
+) {
+    val budgetStatuses by viewModel.activeBudgetStatuses.collectAsState()
+    val totalBudgetStatus by viewModel.totalBudgetStatus.collectAsState()
+    val categoryBudgetStatuses by viewModel.categoryBudgetStatuses.collectAsState()
+    val memberBudgetStatuses by viewModel.memberBudgetStatuses.collectAsState()
+    val showBudgetDialog by viewModel.showBudgetDialog.collectAsState()
+    val editingBudget by viewModel.editingBudget.collectAsState()
+    
+    val categories by homeViewModel.categories.collectAsState()
+    val members by memberViewModel.allMembers.collectAsState(initial = emptyList())
+    
+    var selectedTab by remember { mutableStateOf(0) }
+    val tabs = listOf("总览", "分类预算", "成员预算")
+    
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp)
+    ) {
+        // 页面标题
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Text(
+                text = "预算管理",
+                style = MaterialTheme.typography.headlineMedium,
+                fontWeight = FontWeight.Bold
+            )
+            
+            // 添加预算按钮
+            IconButton(
+                onClick = { viewModel.showEditBudgetDialog() }
+            ) {
+                Icon(
+                    imageVector = Icons.Default.Add,
+                    contentDescription = "添加预算",
+                    tint = MaterialTheme.colorScheme.primary
+                )
+            }
+        }
+        
+        Spacer(modifier = Modifier.height(16.dp))
+        
+        // 总预算概览卡片
+        totalBudgetStatus?.let { status ->
+            BudgetOverviewCard(status)
+            Spacer(modifier = Modifier.height(16.dp))
+        }
+        
+        // Tab 选择器
+        TabRow(selectedTabIndex = selectedTab) {
+            tabs.forEachIndexed { index, title ->
+                Tab(
+                    selected = selectedTab == index,
+                    onClick = { selectedTab = index },
+                    text = { Text(title) }
+                )
+            }
+        }
+        
+        Spacer(modifier = Modifier.height(16.dp))
+        
+        // Tab 内容
+        when (selectedTab) {
+            0 -> BudgetOverviewTab(budgetStatuses, viewModel)
+            1 -> CategoryBudgetTab(categoryBudgetStatuses, viewModel)
+            2 -> MemberBudgetTab(memberBudgetStatuses, viewModel)
+        }
+    }
+    
+    // 预算编辑对话框
+    if (showBudgetDialog) {
+        BudgetEditDialog(
+            budget = editingBudget,
+            categories = categories.filter { it.type == TransactionType.EXPENSE },
+            members = members,
+            onDismiss = { viewModel.hideBudgetDialog() },
+            onConfirm = { budget ->
+                if (editingBudget == null) {
+                    viewModel.createBudget(
+                        type = budget.type,
+                        amount = budget.amount,
+                        categoryName = budget.categoryName,
+                        memberId = budget.memberId,
+                        alertThreshold = budget.alertThreshold
+                    )
+                } else {
+                    viewModel.updateBudget(budget)
+                }
+                viewModel.hideBudgetDialog()
+            }
+        )
+    }
+}
+
+/**
+ * 预算概览卡片
+ */
+@Composable
+private fun BudgetOverviewCard(budgetStatus: BudgetStatus) {
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        elevation = CardDefaults.cardElevation(defaultElevation = 4.dp)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp)
+        ) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = "本月总预算",
+                    style = MaterialTheme.typography.titleMedium,
+                    fontWeight = FontWeight.Bold
+                )
+                
+                Text(
+                    text = formatCurrency(budgetStatus.budget.amount),
+                    style = MaterialTheme.typography.titleLarge,
+                    fontWeight = FontWeight.Bold,
+                    color = MaterialTheme.colorScheme.primary
+                )
+            }
+            
+            Spacer(modifier = Modifier.height(12.dp))
+            
+            // 进度条
+            LinearProgressIndicator(
+                progress = budgetStatus.percentage.toFloat().coerceIn(0f, 1f),
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(8.dp)
+                    .clip(RoundedCornerShape(4.dp)),
+                color = when {
+                    budgetStatus.isOverBudget -> MaterialTheme.colorScheme.error
+                    budgetStatus.isNearLimit -> MaterialTheme.colorScheme.tertiary
+                    else -> MaterialTheme.colorScheme.primary
+                }
+            )
+            
+            Spacer(modifier = Modifier.height(8.dp))
+            
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Column {
+                    Text(
+                        text = "已使用",
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                    Text(
+                        text = formatCurrency(budgetStatus.spent),
+                        style = MaterialTheme.typography.bodyLarge,
+                        fontWeight = FontWeight.Medium
+                    )
+                }
+                
+                Column(horizontalAlignment = Alignment.End) {
+                    Text(
+                        text = "剩余",
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                    Text(
+                        text = formatCurrency(budgetStatus.remaining),
+                        style = MaterialTheme.typography.bodyLarge,
+                        fontWeight = FontWeight.Medium,
+                        color = when {
+                            budgetStatus.isOverBudget -> MaterialTheme.colorScheme.error
+                            budgetStatus.isNearLimit -> MaterialTheme.colorScheme.tertiary
+                            else -> MaterialTheme.colorScheme.primary
+                        }
+                    )
+                }
+            }
+            
+            if (budgetStatus.isOverBudget) {
+                Spacer(modifier = Modifier.height(8.dp))
+                Text(
+                    text = "⚠️ 已超出预算 ${formatCurrency(kotlin.math.abs(budgetStatus.remaining))}",
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.error,
+                    modifier = Modifier.fillMaxWidth(),
+                    textAlign = TextAlign.Center
+                )
+            } else if (budgetStatus.isNearLimit) {
+                Spacer(modifier = Modifier.height(8.dp))
+                Text(
+                    text = "⚠️ 接近预算限制",
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.tertiary,
+                    modifier = Modifier.fillMaxWidth(),
+                    textAlign = TextAlign.Center
+                )
+            }
+        }
+    }
+}
+
+/**
+ * 预算总览标签页
+ */
+@Composable
+private fun BudgetOverviewTab(
+    budgetStatuses: List<BudgetStatus>,
+    viewModel: BudgetViewModel
+) {
+    LazyColumn(
+        verticalArrangement = Arrangement.spacedBy(8.dp)
+    ) {
+        items(budgetStatuses) { status ->
+            BudgetItem(
+                budgetStatus = status,
+                onClick = { viewModel.showEditBudgetDialog(status.budget) },
+                onToggleEnabled = { viewModel.toggleBudgetEnabled(status.budget) }
+            )
+        }
+    }
+}
+
+/**
+ * 分类预算标签页
+ */
+@Composable
+private fun CategoryBudgetTab(
+    categoryBudgetStatuses: List<BudgetStatus>,
+    viewModel: BudgetViewModel
+) {
+    LazyColumn(
+        verticalArrangement = Arrangement.spacedBy(8.dp)
+    ) {
+        items(categoryBudgetStatuses) { status ->
+            BudgetItem(
+                budgetStatus = status,
+                onClick = { viewModel.showEditBudgetDialog(status.budget) },
+                onToggleEnabled = { viewModel.toggleBudgetEnabled(status.budget) }
+            )
+        }
+    }
+}
+
+/**
+ * 成员预算标签页
+ */
+@Composable
+private fun MemberBudgetTab(
+    memberBudgetStatuses: List<BudgetStatus>,
+    viewModel: BudgetViewModel
+) {
+    LazyColumn(
+        verticalArrangement = Arrangement.spacedBy(8.dp)
+    ) {
+        items(memberBudgetStatuses) { status ->
+            BudgetItem(
+                budgetStatus = status,
+                onClick = { viewModel.showEditBudgetDialog(status.budget) },
+                onToggleEnabled = { viewModel.toggleBudgetEnabled(status.budget) }
+            )
+        }
+    }
+}
+
+/**
+ * 预算项目组件
+ */
+@Composable
+private fun BudgetItem(
+    budgetStatus: BudgetStatus,
+    onClick: () -> Unit,
+    onToggleEnabled: () -> Unit
+) {
+    Card(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable { onClick() },
+        colors = CardDefaults.cardColors(
+            containerColor = if (budgetStatus.budget.isEnabled) {
+                MaterialTheme.colorScheme.surface
+            } else {
+                MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.5f)
+            }
+        )
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Column(
+                modifier = Modifier.weight(1f)
+            ) {
+                Text(
+                    text = when (budgetStatus.budget.type) {
+                        BudgetType.TOTAL -> "总预算"
+                        BudgetType.CATEGORY -> budgetStatus.budget.categoryName ?: "未知分类"
+                        BudgetType.MEMBER -> "成员预算"
+                    },
+                    style = MaterialTheme.typography.titleMedium,
+                    fontWeight = FontWeight.Medium
+                )
+                
+                Spacer(modifier = Modifier.height(4.dp))
+                
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(16.dp)
+                ) {
+                    Text(
+                        text = "预算: ${formatCurrency(budgetStatus.budget.amount)}",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                    Text(
+                        text = "已用: ${formatCurrency(budgetStatus.spent)}",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = when {
+                            budgetStatus.isOverBudget -> MaterialTheme.colorScheme.error
+                            budgetStatus.isNearLimit -> MaterialTheme.colorScheme.tertiary
+                            else -> MaterialTheme.colorScheme.onSurfaceVariant
+                        }
+                    )
+                }
+                
+                Spacer(modifier = Modifier.height(8.dp))
+                
+                LinearProgressIndicator(
+                    progress = budgetStatus.percentage.toFloat().coerceIn(0f, 1f),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(4.dp)
+                        .clip(RoundedCornerShape(2.dp)),
+                    color = when {
+                        budgetStatus.isOverBudget -> MaterialTheme.colorScheme.error
+                        budgetStatus.isNearLimit -> MaterialTheme.colorScheme.tertiary
+                        else -> MaterialTheme.colorScheme.primary
+                    }
+                )
+            }
+            
+            IconButton(onClick = onToggleEnabled) {
+                Icon(
+                    imageVector = if (budgetStatus.budget.isEnabled) {
+                        Icons.Default.CheckCircle
+                    } else {
+                        Icons.Default.Cancel
+                    },
+                    contentDescription = if (budgetStatus.budget.isEnabled) "禁用" else "启用",
+                    tint = if (budgetStatus.budget.isEnabled) {
+                        MaterialTheme.colorScheme.primary
+                    } else {
+                        MaterialTheme.colorScheme.onSurfaceVariant
+                    }
+                )
+            }
+        }
+    }
+}
+
+/**
+ * 格式化货币
+ */
+private fun formatCurrency(amount: Double): String {
+    val format = NumberFormat.getCurrencyInstance(Locale.CHINA)
+    return format.format(amount)
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/screen/HomeScreen.kt

@@ -20,7 +20,6 @@ import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
@@ -54,7 +53,6 @@ fun HomeScreen(
     val filteredRecords by viewModel.filteredRecords.collectAsState()
     val categories by viewModel.categories.collectAsState(initial = emptyList())
     val members by viewModel.members.collectAsState(initial = emptyList())
-    val selectedMember by viewModel.selectedMember.collectAsState()
     val totalIncome by viewModel.totalIncome.collectAsState()
     val totalExpense by viewModel.totalExpense.collectAsState()
 

app/src/main/java/com/yovinchen/bookkeeping/ui/screen/MemberDetailScreen.kt

@@ -144,7 +144,7 @@ fun MemberDetailScreen(
                                 categoryData = categoryData,
                                 memberData = emptyList(),
                                 currentViewMode = false,
-                                onCategoryClick = { selectedCategory ->
+                                onCategoryClick = {
                                     // 暂时不处理点击事件
                                 }
                             )

app/src/main/java/com/yovinchen/bookkeeping/ui/screen/SettingsScreen.kt

@@ -1,52 +1,54 @@
 package com.yovinchen.bookkeeping.ui.screen
 
+import android.content.Context
+import android.widget.Toast
+import androidx.activity.ComponentActivity
+import androidx.appcompat.app.AppCompatActivity
+import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.Divider
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.ListItem
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.RadioButton
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.grid.GridCells
+import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
+import androidx.compose.foundation.lazy.grid.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.yovinchen.bookkeeping.model.Settings
 import com.yovinchen.bookkeeping.model.ThemeMode
-import com.yovinchen.bookkeeping.ui.components.ColorPicker
-import com.yovinchen.bookkeeping.ui.components.predefinedColors
-import com.yovinchen.bookkeeping.ui.dialog.CategoryManagementDialog
-import com.yovinchen.bookkeeping.ui.dialog.MemberManagementDialog
-import com.yovinchen.bookkeeping.viewmodel.MemberViewModel
-import com.yovinchen.bookkeeping.viewmodel.SettingsViewModel
+import com.yovinchen.bookkeeping.ui.components.*
+import com.yovinchen.bookkeeping.ui.dialog.*
+import com.yovinchen.bookkeeping.utils.FilePickerUtil
+import com.yovinchen.bookkeeping.viewmodel.*
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun SettingsScreen(
     currentTheme: ThemeMode,
     onThemeChange: (ThemeMode) -> Unit,
+    onNavigateToBudget: () -> Unit = {},
     viewModel: SettingsViewModel = viewModel(),
     memberViewModel: MemberViewModel = viewModel()
 ) {
     var showThemeDialog by remember { mutableStateOf(false) }
     var showCategoryDialog by remember { mutableStateOf(false) }
     var showMemberDialog by remember { mutableStateOf(false) }
+    var showBackupDialog by remember { mutableStateOf(false) }
+    var showRestoreDialog by remember { mutableStateOf(false) }
     
     val categories by viewModel.categories.collectAsState()
     val selectedType by viewModel.selectedCategoryType.collectAsState()
     val members by memberViewModel.allMembers.collectAsState(initial = emptyList())
+    val monthStartDay by viewModel.monthStartDay.collectAsState()
+    val settings by viewModel.settings.collectAsState()
+    val context = LocalContext.current
+    
+    var showMonthStartDayDialog by remember { mutableStateOf(false) }
 
     Column(modifier = Modifier.fillMaxSize()) {
         // 成员管理设置项
@@ -56,7 +58,7 @@ fun SettingsScreen(
             modifier = Modifier.clickable { showMemberDialog = true }
         )
 
-        Divider()
+        HorizontalDivider()
 
         // 类别管理设置项
         ListItem(
@@ -65,7 +67,27 @@ fun SettingsScreen(
             modifier = Modifier.clickable { showCategoryDialog = true }
         )
 
-        Divider()
+        HorizontalDivider()
+
+        // 数据备份设置项
+        ListItem(
+            headlineContent = { Text("数据备份") },
+            supportingContent = { Text("备份和恢复数据") },
+            modifier = Modifier.clickable { showBackupDialog = true }
+        )
+
+        HorizontalDivider()
+        
+        // 预算管理设置项
+        ListItem(
+            headlineContent = { Text("预算管理") },
+            supportingContent = { Text("设置和管理预算") },
+            modifier = Modifier.clickable { 
+                onNavigateToBudget()
+            }
+        )
+
+        HorizontalDivider()
 
         // 主题设置项
         ListItem(
@@ -82,6 +104,15 @@ fun SettingsScreen(
             },
             modifier = Modifier.clickable { showThemeDialog = true }
         )
+        
+        HorizontalDivider()
+        
+        // 月度开始日期设置项
+        ListItem(
+            headlineContent = { Text("月度开始日期") },
+            supportingContent = { Text("每月从${monthStartDay}号开始计算") },
+            modifier = Modifier.clickable { showMonthStartDayDialog = true }
+        )
 
         if (showThemeDialog) {
             AlertDialog(
@@ -117,7 +148,7 @@ fun SettingsScreen(
                             }
                         )
 
-                        Divider(modifier = Modifier.padding(vertical = 8.dp))
+                        HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
 
                         // 颜色选择器
                         Text(
@@ -145,32 +176,230 @@ fun SettingsScreen(
                 }
             )
         }
-    }
+        
+        // 月度开始日期对话框
+        if (showMonthStartDayDialog) {
+            AlertDialog(
+                onDismissRequest = { showMonthStartDayDialog = false },
+                title = { Text("选择月度开始日期") },
+                text = {
+                    Column {
+                        Text("选择每月记账的开始日期（1-28号）")
+                        Spacer(modifier = Modifier.height(16.dp))
+                        
+                        // 日期选择器
+                        val days = (1..28).toList()
+                        LazyVerticalGrid(
+                            columns = GridCells.Fixed(7),
+                            modifier = Modifier.fillMaxWidth().height(280.dp),
+                            contentPadding = PaddingValues(4.dp),
+                            verticalArrangement = Arrangement.spacedBy(4.dp),
+                            horizontalArrangement = Arrangement.spacedBy(4.dp)
+                        ) {
+                            items(days) { day ->
+                                Surface(
+                                    onClick = {
+                                        viewModel.setMonthStartDay(day)
+                                        showMonthStartDayDialog = false
+                                    },
+                                    shape = RoundedCornerShape(8.dp),
+                                    color = if (day == monthStartDay) {
+                                        MaterialTheme.colorScheme.primaryContainer
+                                    } else {
+                                        MaterialTheme.colorScheme.surface
+                                    },
+                                    border = BorderStroke(
+                                        width = 1.dp,
+                                        color = if (day == monthStartDay) {
+                                            MaterialTheme.colorScheme.primary
+                                        } else {
+                                            MaterialTheme.colorScheme.outline
+                                        }
+                                    ),
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .aspectRatio(1f)
+                                ) {
+                                    Box(
+                                        contentAlignment = Alignment.Center,
+                                        modifier = Modifier.fillMaxSize()
+                                    ) {
+                                        Text(
+                                            text = day.toString(),
+                                            style = MaterialTheme.typography.bodyMedium,
+                                            color = if (day == monthStartDay) {
+                                                MaterialTheme.colorScheme.onPrimaryContainer
+                                            } else {
+                                                MaterialTheme.colorScheme.onSurface
+                                            }
+                                        )
+                                    }
+                                }
+                            }
+                        }
+                    }
+                },
+                confirmButton = {
+                    TextButton(onClick = { showMonthStartDayDialog = false }) {
+                        Text("取消")
+                    }
+                }
+            )
+        }
 
-    // 类别管理对话框
-    if (showCategoryDialog) {
-        CategoryManagementDialog(
-            onDismiss = { showCategoryDialog = false },
-            categories = categories,
-            onAddCategory = viewModel::addCategory,
-            onDeleteCategory = viewModel::deleteCategory,
-            onUpdateCategory = viewModel::updateCategory,
-            selectedType = selectedType,
-            onTypeChange = viewModel::setSelectedCategoryType
-        )
-    }
+        // 备份对话框
+        if (showBackupDialog) {
+            AlertDialog(
+                onDismissRequest = { showBackupDialog = false },
+                title = { Text("数据备份") },
+                text = {
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        Button(
+                            onClick = { viewModel.exportToCSV(context) },
+                            modifier = Modifier.fillMaxWidth()
+                        ) {
+                            Text("导出为CSV")
+                        }
+                        Button(
+                            onClick = { viewModel.exportToExcel(context) },
+                            modifier = Modifier.fillMaxWidth()
+                        ) {
+                            Text("导出为Excel")
+                        }
+                        Button(
+                            onClick = { showRestoreDialog = true },
+                            modifier = Modifier.fillMaxWidth()
+                        ) {
+                            Text("恢复数据")
+                        }
+                        Row(
+                            modifier = Modifier.fillMaxWidth(),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Text("自动备份", modifier = Modifier.weight(1f))
+                            Switch(
+                                checked = viewModel.isAutoBackupEnabled.collectAsState().value,
+                                onCheckedChange = { viewModel.setAutoBackup(it) }
+                            )
+                        }
+                        if (viewModel.isAutoBackupEnabled.collectAsState().value) {
+                            Text(
+                                "自动备份将每24小时创建一次备份，保存在应用私有目录中",
+                                style = MaterialTheme.typography.bodySmall
+                            )
+                        }
+                        
+                        HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
+                        
+                        // 备份加密开关
+                        Row(
+                            modifier = Modifier.fillMaxWidth(),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Text("备份加密", modifier = Modifier.weight(1f))
+                            Switch(
+                                checked = settings?.encryptBackup ?: true,
+                                onCheckedChange = { enabled ->
+                                    viewModel.updateSettings(
+                                        settings?.copy(encryptBackup = enabled) ?: Settings(encryptBackup = enabled)
+                                    )
+                                }
+                            )
+                        }
+                        Text(
+                            "开启后，导出的备份文件将被加密保护",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                },
+                confirmButton = {
+                    TextButton(onClick = { showBackupDialog = false }) {
+                        Text("关闭")
+                    }
+                }
+            )
+        }
 
-    // 成员管理对话框
-    if (showMemberDialog) {
-        MemberManagementDialog(
-            onDismiss = { showMemberDialog = false },
-            members = members,
-            onAddMember = memberViewModel::addMember,
-            onDeleteMember = memberViewModel::deleteMember,
-            onUpdateMember = { member, name, description ->
-                memberViewModel.updateMember(member.copy(name = name, description = description))
-            }
-        )
+        // 恢复对话框
+        if (showRestoreDialog) {
+            AlertDialog(
+                onDismissRequest = { showRestoreDialog = false },
+                title = { Text("恢复数据") },
+                text = {
+                    Column {
+                        Text("请选择要恢复的备份文件（CSV或Excel格式）")
+                        Text(
+                            "注意：恢复数据将覆盖当前的所有数据！",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.error
+                        )
+                    }
+                },
+                confirmButton = {
+                    TextButton(
+                        onClick = {
+                            showRestoreDialog = false
+                            // 启动文件选择器
+                            val activity = context as? ComponentActivity
+                            if (activity != null) {
+                                FilePickerUtil.startFilePicker(activity) { file ->
+                                    viewModel.restoreData(context, file)
+                                }
+                            } else {
+                                Toast.makeText(context, "无法启动文件选择器", Toast.LENGTH_SHORT).show()
+                            }
+                        }
+                    ) {
+                        Text("选择文件")
+                    }
+                },
+                dismissButton = {
+                    TextButton(onClick = { showRestoreDialog = false }) {
+                        Text("取消")
+                    }
+                }
+            )
+        }
+
+        // 类别管理对话框
+        if (showCategoryDialog) {
+            CategoryManagementDialog(
+                onDismiss = { showCategoryDialog = false },
+                categories = categories,
+                onAddCategory = { name, type, iconResId -> 
+                    viewModel.addCategory(name, type, iconResId)
+                },
+                onDeleteCategory = viewModel::deleteCategory,
+                onUpdateCategory = { category, newName, iconResId ->
+                    viewModel.updateCategory(category, newName, iconResId)
+                },
+                selectedType = selectedType,
+                onTypeChange = viewModel::setSelectedCategoryType
+            )
+        }
+
+        // 成员管理对话框
+        if (showMemberDialog) {
+            MemberManagementDialog(
+                onDismiss = { showMemberDialog = false },
+                members = members,
+                onAddMember = { name, description, iconResId ->
+                    memberViewModel.addMember(name, description, iconResId)
+                },
+                onDeleteMember = memberViewModel::deleteMember,
+                onUpdateMember = { member, name, description, iconResId ->
+                    memberViewModel.updateMember(member.copy(
+                        name = name,
+                        description = description,
+                        icon = iconResId
+                    ))
+                }
+            )
+        }
     }
 }
 

app/src/main/java/com/yovinchen/bookkeeping/utils/DateUtils.kt

@@ -0,0 +1,85 @@
+package com.yovinchen.bookkeeping.utils
+
+import java.time.LocalDate
+import java.time.YearMonth
+import java.time.ZoneId
+import java.util.Date
+
+object DateUtils {
+    
+    /**
+     * 根据月度开始日期计算给定日期所属的记账月份
+     * @param date 要判断的日期
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 该日期所属的记账月份
+     */
+    fun getAccountingMonth(date: Date, monthStartDay: Int): YearMonth {
+        val localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate()
+        return getAccountingMonth(localDate, monthStartDay)
+    }
+    
+    /**
+     * 根据月度开始日期计算给定日期所属的记账月份
+     * @param date 要判断的日期
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 该日期所属的记账月份
+     */
+    fun getAccountingMonth(date: LocalDate, monthStartDay: Int): YearMonth {
+        val dayOfMonth = date.dayOfMonth
+        
+        return if (dayOfMonth >= monthStartDay) {
+            // 当前日期大于等于开始日期，属于当前月
+            YearMonth.from(date)
+        } else {
+            // 当前日期小于开始日期，属于上个月
+            YearMonth.from(date.minusMonths(1))
+        }
+    }
+    
+    /**
+     * 获取记账月份的开始日期
+     * @param yearMonth 记账月份
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 该记账月份的开始日期
+     */
+    fun getMonthStartDate(yearMonth: YearMonth, monthStartDay: Int): LocalDate {
+        return yearMonth.atDay(monthStartDay)
+    }
+    
+    /**
+     * 获取记账月份的结束日期
+     * @param yearMonth 记账月份
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 该记账月份的结束日期
+     */
+    fun getMonthEndDate(yearMonth: YearMonth, monthStartDay: Int): LocalDate {
+        val nextMonth = yearMonth.plusMonths(1)
+        return nextMonth.atDay(monthStartDay).minusDays(1)
+    }
+    
+    /**
+     * 检查日期是否在指定的记账月份内
+     * @param date 要检查的日期
+     * @param yearMonth 记账月份
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 是否在该记账月份内
+     */
+    fun isInAccountingMonth(date: Date, yearMonth: YearMonth, monthStartDay: Int): Boolean {
+        val localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate()
+        return isInAccountingMonth(localDate, yearMonth, monthStartDay)
+    }
+    
+    /**
+     * 检查日期是否在指定的记账月份内
+     * @param date 要检查的日期
+     * @param yearMonth 记账月份
+     * @param monthStartDay 月度开始日期（1-28）
+     * @return 是否在该记账月份内
+     */
+    fun isInAccountingMonth(date: LocalDate, yearMonth: YearMonth, monthStartDay: Int): Boolean {
+        val startDate = getMonthStartDate(yearMonth, monthStartDay)
+        val endDate = getMonthEndDate(yearMonth, monthStartDay)
+        
+        return date >= startDate && date <= endDate
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/utils/EncryptionUtils.kt

@@ -0,0 +1,136 @@
+package com.yovinchen.bookkeeping.utils
+
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import android.util.Base64
+import java.security.KeyStore
+import javax.crypto.Cipher
+import javax.crypto.KeyGenerator
+import javax.crypto.SecretKey
+import javax.crypto.spec.GCMParameterSpec
+
+/**
+ * 加密工具类，使用 Android Keystore 系统安全地存储加密密钥
+ */
+object EncryptionUtils {
+    private const val ANDROID_KEYSTORE = "AndroidKeyStore"
+    private const val TRANSFORMATION = "AES/GCM/NoPadding"
+    private const val KEY_ALIAS = "BookkeepingBackupKey"
+    private const val GCM_TAG_LENGTH = 128
+    
+    init {
+        generateKey()
+    }
+    
+    /**
+     * 生成或获取加密密钥
+     */
+    private fun generateKey() {
+        val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE)
+        keyStore.load(null)
+        
+        // 如果密钥已存在，则不需要重新生成
+        if (keyStore.containsAlias(KEY_ALIAS)) {
+            return
+        }
+        
+        val keyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, ANDROID_KEYSTORE)
+        val keyGenParameterSpec = KeyGenParameterSpec.Builder(
+            KEY_ALIAS,
+            KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT
+        )
+            .setBlockModes(KeyProperties.BLOCK_MODE_GCM)
+            .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
+            .setRandomizedEncryptionRequired(true)
+            .build()
+        
+        keyGenerator.init(keyGenParameterSpec)
+        keyGenerator.generateKey()
+    }
+    
+    /**
+     * 获取密钥
+     */
+    private fun getKey(): SecretKey {
+        val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE)
+        keyStore.load(null)
+        return keyStore.getKey(KEY_ALIAS, null) as SecretKey
+    }
+    
+    /**
+     * 加密字符串
+     * @param plainText 要加密的明文
+     * @return Base64编码的加密数据（包含IV）
+     */
+    fun encrypt(plainText: String): String {
+        val cipher = Cipher.getInstance(TRANSFORMATION)
+        cipher.init(Cipher.ENCRYPT_MODE, getKey())
+        
+        val iv = cipher.iv
+        val encryptedBytes = cipher.doFinal(plainText.toByteArray(Charsets.UTF_8))
+        
+        // 将IV和加密数据组合
+        val combined = ByteArray(iv.size + encryptedBytes.size)
+        System.arraycopy(iv, 0, combined, 0, iv.size)
+        System.arraycopy(encryptedBytes, 0, combined, iv.size, encryptedBytes.size)
+        
+        return Base64.encodeToString(combined, Base64.DEFAULT)
+    }
+    
+    /**
+     * 解密字符串
+     * @param encryptedData Base64编码的加密数据
+     * @return 解密后的明文
+     */
+    fun decrypt(encryptedData: String): String {
+        val combined = Base64.decode(encryptedData, Base64.DEFAULT)
+        
+        // 提取IV（前12字节）
+        val iv = combined.sliceArray(0..11)
+        val encryptedBytes = combined.sliceArray(12 until combined.size)
+        
+        val cipher = Cipher.getInstance(TRANSFORMATION)
+        val spec = GCMParameterSpec(GCM_TAG_LENGTH, iv)
+        cipher.init(Cipher.DECRYPT_MODE, getKey(), spec)
+        
+        val decryptedBytes = cipher.doFinal(encryptedBytes)
+        return String(decryptedBytes, Charsets.UTF_8)
+    }
+    
+    /**
+     * 加密字节数组
+     * @param data 要加密的数据
+     * @return 加密后的数据（包含IV）
+     */
+    fun encryptBytes(data: ByteArray): ByteArray {
+        val cipher = Cipher.getInstance(TRANSFORMATION)
+        cipher.init(Cipher.ENCRYPT_MODE, getKey())
+        
+        val iv = cipher.iv
+        val encryptedBytes = cipher.doFinal(data)
+        
+        // 将IV和加密数据组合
+        val combined = ByteArray(iv.size + encryptedBytes.size)
+        System.arraycopy(iv, 0, combined, 0, iv.size)
+        System.arraycopy(encryptedBytes, 0, combined, iv.size, encryptedBytes.size)
+        
+        return combined
+    }
+    
+    /**
+     * 解密字节数组
+     * @param encryptedData 加密的数据
+     * @return 解密后的数据
+     */
+    fun decryptBytes(encryptedData: ByteArray): ByteArray {
+        // 提取IV（前12字节）
+        val iv = encryptedData.sliceArray(0..11)
+        val encryptedBytes = encryptedData.sliceArray(12 until encryptedData.size)
+        
+        val cipher = Cipher.getInstance(TRANSFORMATION)
+        val spec = GCMParameterSpec(GCM_TAG_LENGTH, iv)
+        cipher.init(Cipher.DECRYPT_MODE, getKey(), spec)
+        
+        return cipher.doFinal(encryptedBytes)
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/utils/FilePickerUtil.kt

@@ -0,0 +1,167 @@
+package com.yovinchen.bookkeeping.utils
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.widget.Toast
+import androidx.activity.ComponentActivity
+import androidx.activity.result.contract.ActivityResultContracts
+import com.yovinchen.bookkeeping.getPreregisteredFilePickerLauncher
+import java.io.File
+import java.io.FileOutputStream
+
+/**
+ * 文件选择器工具类
+ * 用于处理文件选择、权限获取和文件处理的工具类
+ * 
+ * 主要功能：
+ * 1. 启动系统文件选择器
+ * 2. 处理选择结果
+ * 3. 将选择的文件复制到应用缓存目录
+ * 4. 文件类型验证
+ */
+object FilePickerUtil {
+    /**
+     * 当前活跃的文件选择回调
+     * 用于在文件选择完成后调用
+     */
+    private var currentCallback: ((File) -> Unit)? = null
+
+    /**
+     * 启动文件选择器
+     * 
+     * @param activity 当前活动，用于启动文件选择器
+     * @param onFileSelected 文件选择完成后的回调函数，参数为选中的文件
+     */
+    fun startFilePicker(activity: ComponentActivity, onFileSelected: (File) -> Unit) {
+        currentCallback = onFileSelected
+        
+        try {
+            // 设置可选择的文件类型，限制为CSV和Excel文件
+            val mimeTypes = arrayOf(
+                "text/csv",
+                "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+                "application/vnd.ms-excel"
+            )
+            // 使用预注册的文件选择器启动文件选择流程
+            activity.getPreregisteredFilePickerLauncher().launch(mimeTypes)
+        } catch (e: Exception) {
+            // 文件选择器启动失败时显示错误提示
+            Toast.makeText(activity, "无法启动文件选择器：${e.message}", Toast.LENGTH_SHORT).show()
+            currentCallback = null
+        }
+    }
+
+    /**
+     * 处理文件选择结果
+     * 
+     * @param context 上下文对象，用于访问ContentResolver
+     * @param uri 选中文件的URI，如果用户取消选择则为null
+     */
+    fun handleFileSelection(context: Context, uri: Uri?) {
+        if (uri == null) {
+            // 用户未选择文件时显示提示
+            Toast.makeText(context, "未选择文件", Toast.LENGTH_SHORT).show()
+            currentCallback = null
+            return
+        }
+
+        try {
+            // 获取文件MIME类型
+            val mimeType = context.contentResolver.getType(uri)
+            // 验证文件类型是否合法
+            if (!isValidFileType(uri.toString(), mimeType)) {
+                Toast.makeText(context, "请选择CSV或Excel文件", Toast.LENGTH_SHORT).show()
+                return
+            }
+
+            // 获取持久性权限，确保应用在重启后仍能访问该文件
+            val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or
+                    Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+            context.contentResolver.takePersistableUriPermission(uri, takeFlags)
+
+            // 将选中的文件复制到应用私有目录
+            val tempFile = copyUriToTempFile(context, uri)
+            if (tempFile != null) {
+                // 调用回调函数，传递临时文件
+                currentCallback?.invoke(tempFile)
+            } else {
+                Toast.makeText(context, "文件处理失败，请重试", Toast.LENGTH_SHORT).show()
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+            Toast.makeText(context, "文件处理出错：${e.message}", Toast.LENGTH_SHORT).show()
+        } finally {
+            // 清除回调引用，避免内存泄漏
+            currentCallback = null
+        }
+    }
+
+    /**
+     * 验证文件类型是否合法
+     * 
+     * @param fileName 文件名，用于检查文件扩展名
+     * @param mimeType 文件MIME类型
+     * @return 如果文件类型合法则返回true，否则返回false
+     */
+    private fun isValidFileType(fileName: String, mimeType: String?): Boolean {
+        val fileExtension = fileName.lowercase()
+        return fileExtension.endsWith(".csv") || 
+               fileExtension.endsWith(".csv.enc") ||
+               fileExtension.endsWith(".xlsx") ||
+               fileExtension.endsWith(".xlsx.enc") ||
+               fileExtension.endsWith(".xls") ||
+               fileExtension.endsWith(".xls.enc") ||
+               fileExtension.endsWith(".enc") ||
+               mimeType == "text/csv" ||
+               mimeType == "application/vnd.ms-excel" ||
+               mimeType == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ||
+               mimeType == "application/octet-stream" // 加密文件可能被识别为二进制流
+    }
+
+    /**
+     * 将URI指向的文件复制到应用缓存目录
+     * 
+     * @param context 上下文对象，用于访问ContentResolver和缓存目录
+     * @param uri 要复制的文件URI
+     * @return 复制后的临时文件，如果复制失败则返回null
+     */
+    private fun copyUriToTempFile(context: Context, uri: Uri): File? {
+        return try {
+            // 获取文件名，如果无法获取则使用时间戳作为文件名
+            val fileName = getFileName(context, uri) ?: "temp_backup_${System.currentTimeMillis()}"
+            val tempFile = File(context.cacheDir, fileName)
+            
+            // 从URI读取内容并写入临时文件
+            context.contentResolver.openInputStream(uri)?.use { inputStream ->
+                FileOutputStream(tempFile).use { outputStream ->
+                    inputStream.copyTo(outputStream)
+                }
+            }
+            tempFile
+        } catch (e: Exception) {
+            e.printStackTrace()
+            null
+        }
+    }
+
+    /**
+     * 从URI中获取文件名
+     * 
+     * @param context 上下文对象，用于访问ContentResolver
+     * @param uri 文件URI
+     * @return 文件名，如果无法获取则返回null
+     */
+    private fun getFileName(context: Context, uri: Uri): String? {
+        var fileName: String? = null
+        context.contentResolver.query(uri, null, null, null, null)?.use { cursor ->
+            if (cursor.moveToFirst()) {
+                val displayNameIndex = cursor.getColumnIndex(android.provider.OpenableColumns.DISPLAY_NAME)
+                if (displayNameIndex != -1) {
+                    fileName = cursor.getString(displayNameIndex)
+                }
+            }
+        }
+        return fileName
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/utils/IconManager.kt

@@ -0,0 +1,132 @@
+package com.yovinchen.bookkeeping.utils
+
+import androidx.annotation.DrawableRes
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.vectorResource
+import com.yovinchen.bookkeeping.R
+
+/**
+ * 图标管理器
+ * 集中管理应用中使用的各类图标资源
+ * 
+ * 主要功能：
+ * 1. 管理分类图标和成员图标的映射关系
+ * 2. 提供根据名称获取对应图标的方法
+ * 3. 提供获取所有可用图标的方法
+ */
+object IconManager {
+    /**
+     * 类别图标映射
+     * 将分类名称映射到对应的图标资源ID
+     */
+    private val categoryIcons = mapOf(
+        "餐饮" to R.drawable.ic_category_food_24dp,        // 餐饮类别对应食物图标
+        "交通" to R.drawable.ic_category_taxi_24dp,        // 交通类别对应出租车图标
+        "购物" to R.drawable.ic_category_supermarket_24dp, // 购物类别对应超市图标
+        "娱乐" to R.drawable.ic_category_bar_24dp,         // 娱乐类别对应酒吧图标
+        "居住" to R.drawable.ic_category_hotel_24dp,       // 居住类别对应酒店图标
+        "医疗" to R.drawable.ic_category_medicine_24dp,    // 医疗类别对应药品图标
+        "教育" to R.drawable.ic_category_training_24dp,    // 教育类别对应培训图标
+        "宠物" to R.drawable.ic_category_pet_24dp,         // 宠物类别对应宠物图标
+        "鲜花" to R.drawable.ic_category_flower_24dp,      // 鲜花类别对应花图标
+        "外卖" to R.drawable.ic_category_delivery_24dp,    // 外卖类别对应外卖图标
+        "数码" to R.drawable.ic_category_digital_24dp,     // 数码类别对应数码产品图标
+        "化妆品" to R.drawable.ic_category_cosmetics_24dp, // 化妆品类别对应化妆品图标
+        "水果" to R.drawable.ic_category_fruit_24dp,       // 水果类别对应水果图标
+        "零食" to R.drawable.ic_category_snack_24dp,       // 零食类别对应零食图标
+        "蔬菜" to R.drawable.ic_category_vegetable_24dp,   // 蔬菜类别对应蔬菜图标
+        "工资" to R.drawable.ic_category_membership_24dp,  // 工资类别对应会员图标
+        "礼物" to R.drawable.ic_category_gift_24dp,        // 礼物类别对应礼物图标
+        "其他" to R.drawable.ic_category_more_24dp,        // 其他类别对应更多图标
+        "会员" to R.drawable.ic_category_membership_24dp,  // 会员类别对应会员图标
+        "奖金" to R.drawable.ic_category_gift_24dp,        // 奖金类别对应礼物图标
+        "投资" to R.drawable.ic_category_digital_24dp      // 投资类别对应数码图标
+    )
+
+    /**
+     * 成员图标映射
+     * 将成员角色名称映射到对应的图标资源ID
+     */
+    private val memberIcons = mapOf(
+        "自己" to R.drawable.ic_member_boy_24dp,           // 自己对应男孩图标
+        "老婆" to R.drawable.ic_member_bride_24dp,         // 老婆对应新娘图标
+        "老公" to R.drawable.ic_member_groom_24dp,         // 老公对应新郎图标
+        "家庭" to R.drawable.ic_member_family_24dp,        // 家庭对应家庭图标
+        "儿子" to R.drawable.ic_member_baby_boy_24dp,      // 儿子对应男婴图标
+        "女儿" to R.drawable.ic_member_baby_girl_24dp,     // 女儿对应女婴图标
+        "爸爸" to R.drawable.ic_member_father_24dp,        // 爸爸对应父亲图标
+        "妈妈" to R.drawable.ic_member_mother_24dp,        // 妈妈对应母亲图标
+        "爷爷" to R.drawable.ic_member_grandfather_24dp,   // 爷爷对应祖父图标
+        "奶奶" to R.drawable.ic_member_grandmother_24dp,   // 奶奶对应祖母图标
+        "男生" to R.drawable.ic_member_boy_24dp,           // 男生对应男孩图标
+        "女生" to R.drawable.ic_member_girl_24dp,          // 女生对应女孩图标
+        "外公" to R.drawable.ic_member_grandfather_24dp,   // 外公对应祖父图标
+        "外婆" to R.drawable.ic_member_grandmother_24dp,   // 外婆对应祖母图标
+        "其他" to R.drawable.ic_member_girl_24dp           // 其他成员使用女孩图标作为默认值
+    )
+
+    /**
+     * 获取分类对应的图标向量
+     * 用于在Compose UI中直接使用
+     * 
+     * @param name 分类名称
+     * @return 对应的图标向量，如果未找到则返回null
+     */
+    @Composable
+    fun getCategoryIconVector(name: String): ImageVector? {
+        return categoryIcons[name]?.let { ImageVector.vectorResource(id = it) }
+    }
+
+    /**
+     * 获取成员对应的图标向量
+     * 用于在Compose UI中直接使用
+     * 
+     * @param name 成员名称
+     * @return 对应的图标向量，如果未找到则返回null
+     */
+    @Composable
+    fun getMemberIconVector(name: String): ImageVector? {
+        return memberIcons[name]?.let { ImageVector.vectorResource(id = it) }
+    }
+
+    /**
+     * 获取分类对应的图标资源ID
+     * 
+     * @param name 分类名称
+     * @return 对应的图标资源ID，如果未找到则返回null
+     */
+    @DrawableRes
+    fun getCategoryIcon(name: String): Int? {
+        return categoryIcons[name]
+    }
+
+    /**
+     * 获取成员对应的图标资源ID
+     * 
+     * @param name 成员名称
+     * @return 对应的图标资源ID，如果未找到则返回null
+     */
+    @DrawableRes
+    fun getMemberIcon(name: String): Int? {
+        return memberIcons[name]
+    }
+
+    /**
+     * 获取所有可用的分类图标资源ID列表
+     * 
+     * @return 所有分类图标的资源ID列表
+     */
+    fun getAllCategoryIcons(): List<Int> {
+        return categoryIcons.values.toList()
+    }
+
+    /**
+     * 获取所有可用的成员图标资源ID列表
+     * 
+     * @return 所有成员图标的资源ID列表
+     */
+    fun getAllMemberIcons(): List<Int> {
+        return memberIcons.values.toList()
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/viewmodel/AnalysisViewModel.kt

@@ -4,21 +4,22 @@ import android.app.Application
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
 import com.yovinchen.bookkeeping.data.BookkeepingDatabase
+import com.yovinchen.bookkeeping.data.SettingsRepository
 import com.yovinchen.bookkeeping.model.AnalysisType
 import com.yovinchen.bookkeeping.model.BookkeepingRecord
 import com.yovinchen.bookkeeping.model.CategoryStat
 import com.yovinchen.bookkeeping.model.MemberStat
 import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.utils.DateUtils
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
-import java.time.LocalDateTime
 import java.time.YearMonth
-import java.time.ZoneId
 import java.util.*
 
 class AnalysisViewModel(application: Application) : AndroidViewModel(application) {
     private val recordDao = BookkeepingDatabase.getDatabase(application).bookkeepingDao()
     private val memberDao = BookkeepingDatabase.getDatabase(application).memberDao()
+    private val settingsRepository = SettingsRepository(BookkeepingDatabase.getDatabase(application).settingsDao())
 
     private val _startMonth = MutableStateFlow(YearMonth.now())
     val startMonth: StateFlow<YearMonth> = _startMonth.asStateFlow()
@@ -38,16 +39,41 @@ class AnalysisViewModel(application: Application) : AndroidViewModel(application
     private val _records = MutableStateFlow<List<BookkeepingRecord>>(emptyList())
     val records: StateFlow<List<BookkeepingRecord>> = _records.asStateFlow()
 
+    // 存储月度开始日期设置
+    private val _monthStartDay = MutableStateFlow(1)
+    val monthStartDay: StateFlow<Int> = _monthStartDay.asStateFlow()
+
     init {
+        // 订阅设置变化，获取月度开始日期
         viewModelScope.launch {
-            combine(startMonth, endMonth, selectedAnalysisType) { start, end, type ->
-                Triple(start, end, type)
-            }.collect { (start, end, type) ->
-                updateStats(start, end, type)
+            settingsRepository.getSettings().collect { settings ->
+                _monthStartDay.value = settings?.monthStartDay ?: 1
+            }
+        }
+        
+        // 当月度开始日期、起始月份、结束月份或分析类型变化时，更新统计数据
+        viewModelScope.launch {
+            combine(
+                startMonth, 
+                endMonth, 
+                selectedAnalysisType,
+                monthStartDay
+            ) { start, end, type, startDay ->
+                UpdateParams(start, end, type, startDay)
+            }.collect { params ->
+                updateStats(params.start, params.end, params.type, params.startDay)
             }
         }
     }
 
+    // 用于传递更新参数的数据类
+    private data class UpdateParams(
+        val start: YearMonth,
+        val end: YearMonth,
+        val type: AnalysisType,
+        val startDay: Int
+    )
+
     fun setStartMonth(month: YearMonth) {
         _startMonth.value = month
     }
@@ -60,16 +86,16 @@ class AnalysisViewModel(application: Application) : AndroidViewModel(application
         _selectedAnalysisType.value = type
     }
 
-    private suspend fun updateStats(startMonth: YearMonth, endMonth: YearMonth, type: AnalysisType) {
+    private suspend fun updateStats(startMonth: YearMonth, endMonth: YearMonth, type: AnalysisType, monthStartDay: Int) {
         val records = recordDao.getAllRecords().first()
         
-        // 过滤日期范围内的记录
-        val monthRecords = records.filter {
-            val recordDate = Date(it.date.time)
-            val localDateTime = LocalDateTime.ofInstant(recordDate.toInstant(), ZoneId.systemDefault())
-            val yearMonth = YearMonth.from(localDateTime)
-            yearMonth.isAfter(startMonth.minusMonths(1)) && 
-            yearMonth.isBefore(endMonth.plusMonths(1))
+        // 使用 DateUtils 过滤日期范围内的记录
+        val monthRecords = records.filter { record ->
+            val recordDate = Date(record.date.time)
+            val accountingMonth = DateUtils.getAccountingMonth(recordDate, monthStartDay)
+            
+            // 检查记账月份是否在选定的范围内
+            accountingMonth >= startMonth && accountingMonth <= endMonth
         }
 
         // 更新记录数据

app/src/main/java/com/yovinchen/bookkeeping/viewmodel/BudgetViewModel.kt

@@ -0,0 +1,185 @@
+package com.yovinchen.bookkeeping.viewmodel
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import com.yovinchen.bookkeeping.data.BookkeepingDatabase
+import com.yovinchen.bookkeeping.data.BudgetRepository
+import com.yovinchen.bookkeeping.model.*
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import java.util.*
+import java.util.Calendar
+
+/**
+ * 预算管理 ViewModel
+ * 负责预算相关的业务逻辑和状态管理
+ */
+class BudgetViewModel(application: Application) : AndroidViewModel(application) {
+    private val database = BookkeepingDatabase.getDatabase(application)
+    private val budgetRepository = BudgetRepository(
+        database.budgetDao(),
+        database.bookkeepingDao(),
+        database.memberDao()
+    )
+    
+    // 所有预算列表
+    val allBudgets = budgetRepository.getAllBudgets()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+    
+    // 当前活跃的预算状态
+    val activeBudgetStatuses = budgetRepository.getActiveBudgetStatuses()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+    
+    // 总预算状态
+    private val _totalBudgetStatus = MutableStateFlow<BudgetStatus?>(null)
+    val totalBudgetStatus: StateFlow<BudgetStatus?> = _totalBudgetStatus.asStateFlow()
+    
+    // 分类预算状态
+    val categoryBudgetStatuses = budgetRepository.getCategoryBudgetStatuses()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+    
+    // 成员预算状态
+    val memberBudgetStatuses = budgetRepository.getMemberBudgetStatuses()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+    
+    // 编辑中的预算
+    private val _editingBudget = MutableStateFlow<Budget?>(null)
+    val editingBudget: StateFlow<Budget?> = _editingBudget.asStateFlow()
+    
+    // 对话框显示状态
+    private val _showBudgetDialog = MutableStateFlow(false)
+    val showBudgetDialog: StateFlow<Boolean> = _showBudgetDialog.asStateFlow()
+    
+    init {
+        // 初始化时加载总预算状态
+        loadTotalBudgetStatus()
+    }
+    
+    /**
+     * 加载总预算状态
+     */
+    private fun loadTotalBudgetStatus() {
+        viewModelScope.launch {
+            _totalBudgetStatus.value = budgetRepository.getTotalBudgetStatus()
+        }
+    }
+    
+    /**
+     * 创建新预算
+     */
+    fun createBudget(
+        type: BudgetType,
+        amount: Double,
+        categoryName: String? = null,
+        memberId: Int? = null,
+        alertThreshold: Double = 0.8
+    ) {
+        viewModelScope.launch {
+            val calendar = Calendar.getInstance()
+            val startDate = calendar.time
+            
+            // 设置结束日期为当月最后一天
+            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH))
+            calendar.set(Calendar.HOUR_OF_DAY, 23)
+            calendar.set(Calendar.MINUTE, 59)
+            calendar.set(Calendar.SECOND, 59)
+            val endDate = calendar.time
+            
+            val budget = Budget(
+                type = type,
+                amount = amount,
+                categoryName = categoryName,
+                memberId = memberId,
+                startDate = startDate,
+                endDate = endDate,
+                alertThreshold = alertThreshold
+            )
+            
+            budgetRepository.createBudget(budget)
+            loadTotalBudgetStatus()
+        }
+    }
+    
+    /**
+     * 更新预算
+     */
+    fun updateBudget(budget: Budget) {
+        viewModelScope.launch {
+            budgetRepository.updateBudget(budget)
+            loadTotalBudgetStatus()
+        }
+    }
+    
+    /**
+     * 删除预算
+     */
+    fun deleteBudget(budget: Budget) {
+        viewModelScope.launch {
+            budgetRepository.deleteBudget(budget)
+            loadTotalBudgetStatus()
+        }
+    }
+    
+    /**
+     * 切换预算启用状态
+     */
+    fun toggleBudgetEnabled(budget: Budget) {
+        viewModelScope.launch {
+            budgetRepository.updateBudgetEnabled(budget.id, !budget.isEnabled)
+            loadTotalBudgetStatus()
+        }
+    }
+    
+    /**
+     * 显示预算编辑对话框
+     */
+    fun showEditBudgetDialog(budget: Budget? = null) {
+        _editingBudget.value = budget
+        _showBudgetDialog.value = true
+    }
+    
+    /**
+     * 隐藏预算编辑对话框
+     */
+    fun hideBudgetDialog() {
+        _showBudgetDialog.value = false
+        _editingBudget.value = null
+    }
+    
+    /**
+     * 检查预算警报
+     */
+    fun checkBudgetAlerts() {
+        viewModelScope.launch {
+            val alerts = budgetRepository.checkBudgetAlerts()
+            // 这里可以触发通知或其他警报机制
+            // 暂时先不实现，等完成通知功能后再补充
+        }
+    }
+    
+    /**
+     * 清理过期预算
+     */
+    fun cleanupExpiredBudgets() {
+        viewModelScope.launch {
+            budgetRepository.cleanupExpiredBudgets()
+        }
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/viewmodel/HomeViewModel.kt

@@ -1,14 +1,15 @@
 package com.yovinchen.bookkeeping.viewmodel
 
 import android.app.Application
-import android.util.Log
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
 import com.yovinchen.bookkeeping.data.BookkeepingDatabase
+import com.yovinchen.bookkeeping.data.SettingsRepository
 import com.yovinchen.bookkeeping.model.BookkeepingRecord
 import com.yovinchen.bookkeeping.model.Category
 import com.yovinchen.bookkeeping.model.Member
 import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.utils.DateUtils
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
@@ -19,10 +20,26 @@ import java.util.*
 
 @OptIn(ExperimentalCoroutinesApi::class)
 class HomeViewModel(application: Application) : AndroidViewModel(application) {
-    private val TAG = "HomeViewModel"
-    private val bookkeepingDao = BookkeepingDatabase.getDatabase(application).bookkeepingDao()
-    private val memberDao = BookkeepingDatabase.getDatabase(application).memberDao()
-    private val categoryDao = BookkeepingDatabase.getDatabase(application).categoryDao()
+    private val database = BookkeepingDatabase.getDatabase(application)
+    private val bookkeepingDao = database.bookkeepingDao()
+    private val memberDao = database.memberDao()
+    private val categoryDao = database.categoryDao()
+    private val settingsRepository = SettingsRepository(database.settingsDao())
+    
+    // 设置相关
+    private val _monthStartDay = MutableStateFlow(1)
+    val monthStartDay: StateFlow<Int> = _monthStartDay.asStateFlow()
+    
+    init {
+        viewModelScope.launch {
+            settingsRepository.ensureSettingsExist()
+            settingsRepository.getSettings().collect { settings ->
+                settings?.let {
+                    _monthStartDay.value = it.monthStartDay
+                }
+            }
+        }
+    }
 
     private val _selectedRecordType = MutableStateFlow<TransactionType?>(null)
     val selectedRecordType: StateFlow<TransactionType?> = _selectedRecordType.asStateFlow()
@@ -58,17 +75,13 @@ class HomeViewModel(application: Application) : AndroidViewModel(application) {
         allRecords,
         _selectedRecordType,
         _selectedMonth,
-        _selectedMember
-    ) { records, selectedType, selectedMonth, selectedMember ->
+        _selectedMember,
+        _monthStartDay
+    ) { records, selectedType, selectedMonth, selectedMember, monthStartDay ->
         records
             .filter { record ->
-                val recordDate = record.date.toInstant()
-                    .atZone(ZoneId.systemDefault())
-                    .toLocalDate()
-                val recordYearMonth = YearMonth.from(recordDate)
-
                 val typeMatches = selectedType?.let { record.type == it } ?: true
-                val monthMatches = recordYearMonth == selectedMonth
+                val monthMatches = DateUtils.isInAccountingMonth(record.date, selectedMonth, monthStartDay)
                 val memberMatches = selectedMember?.let { record.memberId == it.id } ?: true
 
                 monthMatches && memberMatches && typeMatches
@@ -92,16 +105,12 @@ class HomeViewModel(application: Application) : AndroidViewModel(application) {
     val totalIncome = combine(
         allRecords,
         _selectedMonth,
-        _selectedMember
-    ) { records, selectedMonth, selectedMember ->
+        _selectedMember,
+        _monthStartDay
+    ) { records, selectedMonth, selectedMember, monthStartDay ->
         records
             .filter { record ->
-                val recordDate = record.date.toInstant()
-                    .atZone(ZoneId.systemDefault())
-                    .toLocalDate()
-                val recordYearMonth = YearMonth.from(recordDate)
-                
-                val monthMatches = recordYearMonth == selectedMonth
+                val monthMatches = DateUtils.isInAccountingMonth(record.date, selectedMonth, monthStartDay)
                 val memberMatches = selectedMember?.let { record.memberId == it.id } ?: true
                 val typeMatches = record.type == TransactionType.INCOME
 
@@ -117,16 +126,12 @@ class HomeViewModel(application: Application) : AndroidViewModel(application) {
     val totalExpense = combine(
         allRecords,
         _selectedMonth,
-        _selectedMember
-    ) { records, selectedMonth, selectedMember ->
+        _selectedMember,
+        _monthStartDay
+    ) { records, selectedMonth, selectedMember, monthStartDay ->
         records
             .filter { record ->
-                val recordDate = record.date.toInstant()
-                    .atZone(ZoneId.systemDefault())
-                    .toLocalDate()
-                val recordYearMonth = YearMonth.from(recordDate)
-                
-                val monthMatches = recordYearMonth == selectedMonth
+                val monthMatches = DateUtils.isInAccountingMonth(record.date, selectedMonth, monthStartDay)
                 val memberMatches = selectedMember?.let { record.memberId == it.id } ?: true
                 val typeMatches = record.type == TransactionType.EXPENSE
 

app/src/main/java/com/yovinchen/bookkeeping/viewmodel/MemberViewModel.kt

@@ -13,9 +13,9 @@ class MemberViewModel(application: Application) : AndroidViewModel(application)
     
     val allMembers: Flow<List<Member>> = memberDao.getAllMembers()
 
-    fun addMember(name: String, description: String = "") {
+    fun addMember(name: String, description: String = "", iconResId: Int? = null) {
         viewModelScope.launch {
-            val member = Member(name = name, description = description)
+            val member = Member(name = name, description = description, icon = iconResId)
             memberDao.insertMember(member)
         }
     }

app/src/main/java/com/yovinchen/bookkeeping/viewmodel/SettingsViewModel.kt

@@ -1,28 +1,84 @@
 package com.yovinchen.bookkeeping.viewmodel
 
 import android.app.Application
+import android.content.Context
+import android.os.Environment
+import android.widget.Toast
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
+import com.opencsv.CSVReader
+import com.opencsv.CSVWriter
 import com.yovinchen.bookkeeping.data.BookkeepingDatabase
+import com.yovinchen.bookkeeping.data.SettingsRepository
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
 import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.Settings
 import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.utils.EncryptionUtils
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
-import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.apache.poi.xssf.usermodel.XSSFWorkbook
+import java.io.File
+import java.io.FileReader
+import java.io.FileWriter
+import java.io.StringWriter
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.concurrent.TimeUnit
 
 @OptIn(ExperimentalCoroutinesApi::class)
 class SettingsViewModel(application: Application) : AndroidViewModel(application) {
     private val database = BookkeepingDatabase.getDatabase(application)
     private val dao = database.bookkeepingDao()
+    private val memberDao = database.memberDao()
+    private val settingsRepository = SettingsRepository(database.settingsDao())
+    
+    // 设置相关的状态
+    val settings: StateFlow<Settings?> = settingsRepository.getSettings()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = null
+        )
+    
+    private val _isAutoBackupEnabled = MutableStateFlow(false)
+    val isAutoBackupEnabled: StateFlow<Boolean> = _isAutoBackupEnabled.asStateFlow()
+    
+    private val _monthStartDay = MutableStateFlow(1)
+    val monthStartDay: StateFlow<Int> = _monthStartDay.asStateFlow()
+    
+    init {
+        viewModelScope.launch {
+            // 确保设置存在
+            settingsRepository.ensureSettingsExist()
+            
+            // 监听设置变化
+            settings.collect { settings ->
+                settings?.let {
+                    _isAutoBackupEnabled.value = it.autoBackupEnabled
+                    _monthStartDay.value = it.monthStartDay
+                }
+            }
+        }
+    }
 
     private val _selectedCategoryType = MutableStateFlow(TransactionType.EXPENSE)
     val selectedCategoryType: StateFlow<TransactionType> = _selectedCategoryType.asStateFlow()
 
-    val categories: StateFlow<List<Category>> = _selectedCategoryType
-        .flatMapLatest { type ->
+    val categories: StateFlow<List<Category>> = _selectedCategoryType.flatMapLatest { type ->
             dao.getCategoriesByType(type)
-        }
-        .stateIn(
+        }.stateIn(
             scope = viewModelScope,
             started = SharingStarted.WhileSubscribed(5000),
             initialValue = emptyList()
@@ -32,9 +88,9 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
         _selectedCategoryType.value = type
     }
 
-    fun addCategory(name: String, type: TransactionType) {
+    fun addCategory(name: String, type: TransactionType, iconResId: Int?) {
         viewModelScope.launch {
-            val category = Category(name = name, type = type)
+            val category = Category(name = name, type = type, icon = iconResId)
             dao.insertCategory(category)
         }
     }
@@ -45,9 +101,9 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
         }
     }
 
-    fun updateCategory(category: Category, newName: String) {
+    fun updateCategory(category: Category, newName: String, iconResId: Int?) {
         viewModelScope.launch {
-            val updatedCategory = category.copy(name = newName)
+            val updatedCategory = category.copy(name = newName, icon = iconResId)
             dao.updateCategory(updatedCategory)
             // 更新所有使用该类别的记录
             dao.updateRecordCategories(category.name, newName)
@@ -57,4 +113,313 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     suspend fun isCategoryInUse(categoryName: String): Boolean {
         return dao.isCategoryInUse(categoryName)
     }
+
+    fun setAutoBackup(enabled: Boolean) {
+        viewModelScope.launch {
+            _isAutoBackupEnabled.value = enabled
+            settingsRepository.updateAutoBackupEnabled(enabled)
+            if (enabled) {
+                schedulePeriodicBackup()
+            }
+        }
+    }
+    
+    fun setMonthStartDay(day: Int) {
+        viewModelScope.launch {
+            _monthStartDay.value = day
+            settingsRepository.updateMonthStartDay(day)
+        }
+    }
+
+    private fun schedulePeriodicBackup() {
+        viewModelScope.launch(Dispatchers.IO) {
+            while (isAutoBackupEnabled.value) {
+                try {
+                    // 创建自动备份
+                    SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
+                    val backupDir = File(
+                        getApplication<Application>().getExternalFilesDir(null), "auto_backups"
+                    )
+                    if (!backupDir.exists()) {
+                        backupDir.mkdirs()
+                    }
+
+                    // 导出CSV
+                    exportToCSV(getApplication(), backupDir)
+
+                    // 等待24小时
+                    delay(TimeUnit.HOURS.toMillis(24))
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+            }
+        }
+    }
+
+    fun exportToCSV(context: Context, customDir: File? = null) {
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                val currentSettings = settings.value ?: Settings()
+                val timestamp =
+                    SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
+                val shouldEncrypt = currentSettings.encryptBackup
+                val fileName = if (shouldEncrypt) {
+                    "bookkeeping_backup_$timestamp.csv.enc"
+                } else {
+                    "bookkeeping_backup_$timestamp.csv"
+                }
+                val downloadsDir = customDir ?: Environment.getExternalStoragePublicDirectory(
+                    Environment.DIRECTORY_DOWNLOADS
+                )
+                val file = File(downloadsDir, fileName)
+
+                // 先创建CSV内容到字符串
+                val csvContent = StringWriter().use { stringWriter ->
+                    val writer = CSVWriter(stringWriter)
+                    
+                    // 写入头部
+                    writer.writeNext(arrayOf("日期", "类型", "金额", "类别", "备注", "成员"))
+
+                    // 获取所有记录和成员
+                    val records = dao.getAllRecords().first()
+                    val members = memberDao.getAllMembers().first()
+
+                    // 写入数据行
+                    records.forEach { record ->
+                        val member = members.find { member -> member.id == record.memberId }
+                        writer.writeNext(
+                            arrayOf(
+                                SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()).format(
+                                    record.date
+                                ),
+                                record.type.toString(),
+                                record.amount.toString(),
+                                record.category,
+                                record.description,
+                                member?.name ?: "自己"
+                            )
+                        )
+                    }
+                    writer.close()
+                    stringWriter.toString()
+                }
+
+                // 根据设置决定是否加密
+                if (shouldEncrypt) {
+                    val encryptedContent = EncryptionUtils.encrypt(csvContent)
+                    file.writeText(encryptedContent)
+                } else {
+                    file.writeText(csvContent)
+                }
+
+                withContext(Dispatchers.Main) {
+                    val message = if (shouldEncrypt) {
+                        "CSV导出成功（已加密）: ${file.absolutePath}"
+                    } else {
+                        "CSV导出成功: ${file.absolutePath}"
+                    }
+                    Toast.makeText(context, message, Toast.LENGTH_LONG).show()
+                }
+            } catch (e: Exception) {
+                e.printStackTrace()
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, "CSV导出失败: ${e.message}", Toast.LENGTH_LONG).show()
+                }
+            }
+        }
+    }
+
+    fun exportToExcel(context: Context) {
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                val currentSettings = settings.value ?: Settings()
+                val shouldEncrypt = currentSettings.encryptBackup
+                
+                val workbook = XSSFWorkbook()
+                val sheet = workbook.createSheet("账目记录")
+
+                // 创建标题行
+                val headerRow = sheet.createRow(0)
+                val headers = arrayOf("日期", "类型", "金额", "类别", "备注", "成员")
+                headers.forEachIndexed { index, header ->
+                    headerRow.createCell(index).setCellValue(header)
+                }
+
+                // 获取所有记录和成员
+                val records = dao.getAllRecords().first()
+                val members = memberDao.getAllMembers().first()
+
+                records.forEachIndexed { index, record ->
+                    val row = sheet.createRow(index + 1)
+                    val member = members.find { member -> member.id == record.memberId }
+
+                    row.createCell(0).setCellValue(
+                        SimpleDateFormat(
+                            "yyyy-MM-dd HH:mm:ss", Locale.getDefault()
+                        ).format(record.date)
+                    )
+                    row.createCell(1).setCellValue(record.type.toString())
+                    row.createCell(2).setCellValue(record.amount)
+                    row.createCell(3).setCellValue(record.category)
+                    row.createCell(4).setCellValue(record.description)
+                    row.createCell(5).setCellValue(member?.name ?: "自己")
+                }
+
+                val timestamp =
+                    SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
+                val fileName = if (shouldEncrypt) {
+                    "bookkeeping_backup_$timestamp.xlsx.enc"
+                } else {
+                    "bookkeeping_backup_$timestamp.xlsx"
+                }
+                val downloadsDir =
+                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+                val file = File(downloadsDir, fileName)
+
+                if (shouldEncrypt) {
+                    // 将 workbook 写入字节数组
+                    val byteArrayOutputStream = java.io.ByteArrayOutputStream()
+                    workbook.write(byteArrayOutputStream)
+                    val excelBytes = byteArrayOutputStream.toByteArray()
+                    
+                    // 加密字节数组
+                    val encryptedBytes = EncryptionUtils.encryptBytes(excelBytes)
+                    
+                    // 写入加密文件
+                    file.writeBytes(encryptedBytes)
+                } else {
+                    workbook.write(file.outputStream())
+                }
+                
+                workbook.close()
+
+                withContext(Dispatchers.Main) {
+                    val message = if (shouldEncrypt) {
+                        "Excel导出成功（已加密）: ${file.absolutePath}"
+                    } else {
+                        "Excel导出成功: ${file.absolutePath}"
+                    }
+                    Toast.makeText(context, message, Toast.LENGTH_LONG).show()
+                }
+            } catch (e: Exception) {
+                e.printStackTrace()
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, "Excel导出失败: ${e.message}", Toast.LENGTH_LONG).show()
+                }
+            }
+        }
+    }
+
+    fun restoreData(context: Context, backupFile: File) {
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                when {
+                    backupFile.name.endsWith(".csv.enc", ignoreCase = true) -> {
+                        // 解密CSV文件
+                        val encryptedContent = backupFile.readText()
+                        val decryptedContent = EncryptionUtils.decrypt(encryptedContent)
+                        val tempFile = File(context.cacheDir, "temp_decrypted.csv")
+                        tempFile.writeText(decryptedContent)
+                        restoreFromCSV(tempFile)
+                        tempFile.delete()
+                    }
+                    
+                    backupFile.name.endsWith(".csv", ignoreCase = true) -> {
+                        restoreFromCSV(backupFile)
+                    }
+
+                    backupFile.name.endsWith(".xlsx.enc", ignoreCase = true) -> {
+                        // 解密Excel文件
+                        val encryptedBytes = backupFile.readBytes()
+                        val decryptedBytes = EncryptionUtils.decryptBytes(encryptedBytes)
+                        val tempFile = File(context.cacheDir, "temp_decrypted.xlsx")
+                        tempFile.writeBytes(decryptedBytes)
+                        restoreFromExcel(tempFile)
+                        tempFile.delete()
+                    }
+                    
+                    backupFile.name.endsWith(".xlsx", ignoreCase = true) -> {
+                        restoreFromExcel(backupFile)
+                    }
+
+                    else -> {
+                        withContext(Dispatchers.Main) {
+                            Toast.makeText(context, "不支持的文件格式", Toast.LENGTH_LONG).show()
+                        }
+                        return@launch
+                    }
+                }
+
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, "数据恢复成功", Toast.LENGTH_LONG).show()
+                }
+            } catch (e: Exception) {
+                e.printStackTrace()
+                withContext(Dispatchers.Main) {
+                    val errorMessage = when {
+                        e.message?.contains("decrypt") == true -> "解密失败，请确认文件未损坏"
+                        else -> "数据恢复失败: ${e.message}"
+                    }
+                    Toast.makeText(context, errorMessage, Toast.LENGTH_LONG).show()
+                }
+            }
+        }
+    }
+
+    private suspend fun restoreFromCSV(file: File) {
+        CSVReader(FileReader(file)).use { reader ->
+            // 跳过标题行
+            reader.readNext()
+
+            // 读取数据行
+            var currentLine = reader.readNext()
+            while (currentLine != null) {
+                val record = BookkeepingRecord(
+                    type = TransactionType.valueOf(currentLine[1]),
+                    amount = currentLine[2].toDouble(),
+                    category = currentLine[3],
+                    description = currentLine[4],
+                    date = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()).parse(
+                        currentLine[0]
+                    ) ?: Date(),
+                    memberId = findMemberIdByName(currentLine[5])
+                )
+                dao.insertRecord(record)
+                currentLine = reader.readNext()
+            }
+        }
+    }
+
+    private suspend fun restoreFromExcel(file: File) {
+        val workbook = XSSFWorkbook(file)
+        val sheet = workbook.getSheetAt(0)
+
+        // 跳过标题行
+        for (rowIndex in 1..sheet.lastRowNum) {
+            val row = sheet.getRow(rowIndex)
+            val record = BookkeepingRecord(
+                type = TransactionType.valueOf(row.getCell(1).stringCellValue),
+                amount = row.getCell(2).numericCellValue,
+                category = row.getCell(3).stringCellValue,
+                description = row.getCell(4).stringCellValue,
+                date = SimpleDateFormat(
+                    "yyyy-MM-dd HH:mm:ss",
+                    Locale.getDefault()
+                ).parse(row.getCell(0).stringCellValue),
+                memberId = findMemberIdByName(row.getCell(5).stringCellValue)
+            )
+            dao.insertRecord(record)
+        }
+        workbook.close()
+    }
+
+    private suspend fun findMemberIdByName(name: String): Int? {
+        return memberDao.getAllMembers().first().find { member -> member.name == name }?.id
+    }
+    
+    fun updateSettings(settings: Settings) {
+        viewModelScope.launch {
+            settingsRepository.updateSettings(settings)
+        }
+    }
 }

app/src/main/res/drawable/account.xml

@@ -0,0 +1,24 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M193.3,124.3h480.5A106.1,106.1 0,0 1,779.8 230.4v63.7H87V230.4a106.1,106.1 0,0 1,106.2 -106.1z"
+      android:fillColor="#FCB423"/>
+  <path
+      android:pathData="M157.8,160.9h512a70.6,70.6 0,0 1,70.6 70.6v99.3H87V231.5a70.6,70.6 0,0 1,70.8 -70.6z"
+      android:fillColor="#FFD62C"/>
+  <path
+      android:pathData="M87,240.3h743a107.5,107.5 0,0 1,107.5 107.5v420.7a134.5,134.5 0,0 1,-134.5 134.5H197.6A110.4,110.4 0,0 1,87 792.7V240.3z"
+      android:fillColor="#7518ED"/>
+  <path
+      android:pathData="M87,280.8h734.3A74.5,74.5 0,0 1,896 355.3v444.8a101.3,101.3 0,0 1,-101.3 101.3H197.6A110.4,110.4 0,0 1,87 791V280.8z"
+      android:fillColor="#9539FC"/>
+  <path
+      android:pathData="M760.1,504.4a112.9,112.9 0,0 0,0 225.9L896,730.3L896,504.4zM757.3,663.9a46.5,46.5 0,1 1,46.5 -46.5,46.5 46.5,0 0,1 -46.5,46.5z"
+      android:fillColor="#741AE8"/>
+  <path
+      android:pathData="M760.1,467.9a112.9,112.9 0,0 0,0 225.9L896,693.8L896,467.9zM757.3,627.4a46.5,46.5 0,1 1,46.5 -46.5,46.5 46.5,0 0,1 -46.5,46.5z"
+      android:fillColor="#FFFFFF"/>
+</vector>

app/src/main/res/drawable/category/ic_category_training_24dp.xml

@@ -1 +0,0 @@
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app/src/main/res/drawable/category/ic_category_travel_24dp.xml

@@ -1 +0,0 @@
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app/src/main/res/drawable/ic_category_baby_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
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+      android:fillColor="#D4EFFF"/>
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+      android:fillColor="#89CBF4"/>
+  <path
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+      android:fillColor="#89CBF4"/>
+  <path
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app/src/main/res/drawable/ic_category_bar_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
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+      android:fillColor="#FFAC3B"/>
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app/src/main/res/drawable/ic_category_clothes_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
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app/src/main/res/drawable/ic_category_convenience_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M198.9,437.1m53.7,0l463.2,0q53.7,0 53.7,53.7l0,251q0,53.7 -53.7,53.7l-463.2,0q-53.7,0 -53.7,-53.7l0,-251q0,-53.7 53.7,-53.7Z"
+      android:fillColor="#EA5959"/>
+  <path
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+      android:fillColor="#CE4141"/>
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+      android:fillColor="#FDBC2C"/>
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app/src/main/res/drawable/ic_category_cosmetics_24dp.xml

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app/src/main/res/drawable/ic_category_delivery_24dp.xml

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app/src/main/res/drawable/ic_category_digital_24dp.xml

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+    android:width="24dp"
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app/src/main/res/drawable/ic_category_drink_24dp.xml

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app/src/main/res/drawable/ic_category_flower_24dp.xml

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app/src/main/res/drawable/ic_category_food_24dp.xml

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app/src/main/res/drawable/ic_category_fruit_24dp.xml

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app/src/main/res/drawable/ic_category_gift_24dp.xml

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app/src/main/res/drawable/ic_category_hotel_24dp.xml

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app/src/main/res/drawable/ic_category_medicine_24dp.xml

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app/src/main/res/drawable/ic_category_membership_24dp.xml

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app/src/main/res/drawable/ic_category_more_24dp.xml

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app/src/main/res/drawable/ic_category_pet_24dp.xml

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+    android:width="24dp"
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app/src/main/res/drawable/ic_category_scenic_24dp.xml

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app/src/main/res/drawable/ic_category_snack_24dp.xml

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app/src/main/res/drawable/ic_category_supermarket_24dp.xml

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app/src/main/res/drawable/ic_category_taxi_24dp.xml

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app/src/main/res/drawable/ic_category_training_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
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app/src/main/res/drawable/ic_category_travel_24dp.xml

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+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
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app/src/main/res/drawable/ic_category_vegetable_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
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+      android:fillColor="#44A00E"/>
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+      android:fillColor="#ABEE93"/>
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+      android:fillColor="#54B721"/>
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app/src/main/res/drawable/ic_member_baby_boy_24dp.xml

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app/src/main/res/drawable/ic_member_baby_girl_24dp.xml

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app/src/main/res/drawable/ic_member_boy_24dp.xml

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+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
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+      android:fillColor="#99D37A"/>
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app/src/main/res/drawable/ic_member_bride_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
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app/src/main/res/drawable/ic_member_family_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
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