基础构建

app/build.gradle.kts

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+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
+}
+
+android {
+    namespace = "com.yovinchen.bookkeeping"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.yovinchen.bookkeeping"
+        minSdk = 26
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary = true
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.1"
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+}
+
+dependencies {
+    implementation("androidx.core:core-ktx:1.12.0")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.7.0")
+    implementation("androidx.activity:activity-compose:1.8.2")
+    implementation(platform("androidx.compose:compose-bom:2024.02.00"))
+    implementation("androidx.compose.ui:ui")
+    implementation("androidx.compose.ui:ui-graphics")
+    implementation("androidx.compose.ui:ui-tooling-preview")
+    implementation("androidx.compose.material3:material3")
+    
+    // ViewModel
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.7.0")
+    implementation("androidx.lifecycle:lifecycle-runtime-compose:2.7.0")
+    implementation(libs.androidx.room.common)
+    implementation(libs.androidx.navigation.common.ktx)
+    implementation(libs.androidx.navigation.compose)
+
+    // Room
+    val roomVersion = "2.6.1"
+    implementation("androidx.room:room-runtime:$roomVersion")
+    implementation("androidx.room:room-ktx:$roomVersion")
+    ksp("androidx.room:room-compiler:$roomVersion")
+    
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test.ext:junit:1.1.5")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+    androidTestImplementation(platform("androidx.compose:compose-bom:2024.02.00"))
+    androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+    debugImplementation("androidx.compose.ui:ui-tooling")
+    debugImplementation("androidx.compose.ui:ui-test-manifest")
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/yovinchen/bookkeeping/ExampleInstrumentedTest.kt

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+package com.yovinchen.bookkeeping
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.yovinchen.bookkeeping", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Bookkeeping"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.Bookkeeping">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

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

@@ -0,0 +1,121 @@
+package com.yovinchen.bookkeeping
+
+import android.app.Activity
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.core.view.WindowCompat
+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
+
+@Composable
+private fun SystemBarColor(isDarkTheme: Boolean) {
+    val view = LocalView.current
+    if (!view.isInEditMode) {
+        val surfaceColor = MaterialTheme.colorScheme.surface.toArgb()
+        val currentWindow = (view.context as? Activity)?.window
+        SideEffect {
+            currentWindow?.let { window ->
+                window.statusBarColor = surfaceColor
+                window.navigationBarColor = surfaceColor
+                WindowCompat.getInsetsController(window, view).apply {
+                    isAppearanceLightStatusBars = !isDarkTheme
+                    isAppearanceLightNavigationBars = !isDarkTheme
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun BookkeepingApp() {
+    var themeMode by remember { mutableStateOf<ThemeMode>(ThemeMode.FOLLOW_SYSTEM) }
+    
+    val isDarkTheme = when (themeMode) {
+        is ThemeMode.FOLLOW_SYSTEM -> isSystemInDarkTheme()
+        is ThemeMode.LIGHT -> false
+        is ThemeMode.DARK -> true
+        is ThemeMode.CUSTOM -> isSystemInDarkTheme()
+    }
+
+    val customColorScheme = when (themeMode) {
+        is ThemeMode.CUSTOM -> {
+            val primaryColor = (themeMode as ThemeMode.CUSTOM).primaryColor
+            if (isDarkTheme) {
+                MaterialTheme.colorScheme.copy(
+                    primary = primaryColor,
+                    secondary = primaryColor.copy(alpha = 0.7f),
+                    tertiary = primaryColor.copy(alpha = 0.5f)
+                )
+            } else {
+                MaterialTheme.colorScheme.copy(
+                    primary = primaryColor,
+                    secondary = primaryColor.copy(alpha = 0.7f),
+                    tertiary = primaryColor.copy(alpha = 0.5f)
+                )
+            }
+        }
+        else -> null
+    }
+
+    BookkeepingTheme(
+        darkTheme = isDarkTheme,
+        customColorScheme = customColorScheme
+    ) {
+        SystemBarColor(isDarkTheme)
+        
+        Surface(
+            modifier = Modifier.fillMaxSize(),
+            color = MaterialTheme.colorScheme.surface
+        ) {
+            MainNavigation(
+                currentTheme = themeMode,
+                onThemeChange = { themeMode = it }
+            )
+        }
+    }
+}
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+        setContent {
+            BookkeepingApp()
+        }
+    }
+}
+
+@Composable
+fun Greeting(name: String, modifier: Modifier = Modifier) {
+    Text(
+        text = "Hello 你好 $name!",
+        modifier = modifier
+    )
+}
+
+@Preview(showBackground = true)
+@Composable
+fun GreetingPreview() {
+    BookkeepingTheme {
+        Greeting("Android")
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+fun BookkeepingAppPreview() {
+    BookkeepingApp()
+}

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

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+package com.yovinchen.bookkeeping.data
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+
+@Database(entities = [Record::class], version = 1, exportSchema = false)
+@TypeConverters(Converters::class)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun recordDao(): RecordDao
+
+    companion object {
+        @Volatile
+        private var INSTANCE: AppDatabase? = null
+
+        fun getDatabase(context: Context): AppDatabase {
+            return INSTANCE ?: synchronized(this) {
+                val instance = Room.databaseBuilder(
+                    context.applicationContext,
+                    AppDatabase::class.java,
+                    "bookkeeping_database"
+                )
+                .fallbackToDestructiveMigration()
+                .build()
+                INSTANCE = instance
+                instance
+            }
+        }
+    }
+}

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

@@ -0,0 +1,64 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.*
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.TransactionType
+import kotlinx.coroutines.flow.Flow
+import java.util.Date
+
+@Dao
+interface BookkeepingDao {
+    @Query("SELECT * FROM bookkeeping_records ORDER BY date DESC")
+    fun getAllRecords(): Flow<List<BookkeepingRecord>>
+
+    @Insert
+    suspend fun insertRecord(record: BookkeepingRecord)
+
+    @Delete
+    suspend fun deleteRecord(record: BookkeepingRecord)
+
+    @Update
+    suspend fun updateRecord(record: BookkeepingRecord)
+
+    @Query("SELECT * FROM bookkeeping_records WHERE type = 'INCOME'")
+    fun getAllIncome(): Flow<List<BookkeepingRecord>>
+
+    @Query("SELECT * FROM bookkeeping_records WHERE type = 'EXPENSE'")
+    fun getAllExpense(): Flow<List<BookkeepingRecord>>
+
+    // 按日期查询
+    @Query("SELECT * FROM bookkeeping_records WHERE date >= :startOfDay AND date < :endOfDay ORDER BY date DESC")
+    fun getRecordsByDate(startOfDay: Date, endOfDay: Date): Flow<List<BookkeepingRecord>>
+
+    // 按日期范围查询
+    @Query("SELECT * FROM bookkeeping_records WHERE date BETWEEN :startDate AND :endDate ORDER BY date DESC")
+    fun getRecordsByDateRange(startDate: Date, endDate: Date): Flow<List<BookkeepingRecord>>
+
+    // 按类别查询
+    @Query("SELECT * FROM bookkeeping_records WHERE category = :category ORDER BY date DESC")
+    fun getRecordsByCategory(category: String): Flow<List<BookkeepingRecord>>
+
+    // 按类型查询
+    @Query("SELECT * FROM bookkeeping_records WHERE type = :type ORDER BY date DESC")
+    fun getRecordsByType(type: TransactionType): Flow<List<BookkeepingRecord>>
+
+    // Category related queries
+    @Query("SELECT * FROM categories WHERE type = :type ORDER BY name ASC")
+    fun getCategoriesByType(type: TransactionType): Flow<List<Category>>
+
+    @Insert
+    suspend fun insertCategory(category: Category)
+
+    @Delete
+    suspend fun deleteCategory(category: Category)
+
+    @Update
+    suspend fun updateCategory(category: Category)
+
+    @Query("SELECT EXISTS(SELECT 1 FROM bookkeeping_records WHERE category = :categoryName LIMIT 1)")
+    suspend fun isCategoryInUse(categoryName: String): Boolean
+
+    @Query("UPDATE bookkeeping_records SET category = :newName WHERE category = :oldName")
+    suspend fun updateRecordCategories(oldName: String, newName: String)
+}

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

@@ -0,0 +1,170 @@
+package com.yovinchen.bookkeeping.data
+
+import android.content.Context
+import android.util.Log
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.Converters
+import com.yovinchen.bookkeeping.model.TransactionType
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+@Database(entities = [BookkeepingRecord::class, Category::class], version = 2, exportSchema = false)
+@TypeConverters(Converters::class)
+abstract class BookkeepingDatabase : RoomDatabase() {
+    abstract fun bookkeepingDao(): BookkeepingDao
+
+    companion object {
+        private const val TAG = "BookkeepingDatabase"
+        
+        @Volatile
+        private var Instance: BookkeepingDatabase? = null
+
+        private val MIGRATION_1_2 = object : Migration(1, 2) {
+            override fun migrate(database: SupportSQLiteDatabase) {
+                try {
+                    Log.d(TAG, "Starting migration from version 1 to 2")
+                    
+                    // 检查表是否存在
+                    val cursor = database.query("SELECT name FROM sqlite_master WHERE type='table' AND name='categories'")
+                    val tableExists = cursor.moveToFirst()
+                    cursor.close()
+                    
+                    if (tableExists) {
+                        // 如果表存在，执行迁移
+                        Log.d(TAG, "Categories table exists, performing migration")
+                        database.execSQL("ALTER TABLE categories RENAME TO categories_old")
+                        
+                        database.execSQL("""
+                            CREATE TABLE categories (
+                                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                                name TEXT NOT NULL,
+                                type TEXT NOT NULL
+                            )
+                        """)
+                        
+                        database.execSQL("""
+                            INSERT INTO categories (name, type)
+                            SELECT name, type FROM categories_old
+                        """)
+                        
+                        database.execSQL("DROP TABLE categories_old")
+                    } else {
+                        // 如果表不存在，直接创建新表
+                        Log.d(TAG, "Categories table does not exist, creating new table")
+                        database.execSQL("""
+                            CREATE TABLE IF NOT EXISTS categories (
+                                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                                name TEXT NOT NULL,
+                                type TEXT NOT NULL
+                            )
+                        """)
+                    }
+                    
+                    // 确保 bookkeeping_records 表存在
+                    database.execSQL("""
+                        CREATE TABLE IF NOT EXISTS bookkeeping_records (
+                            id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                            type TEXT NOT NULL,
+                            amount REAL NOT NULL,
+                            category TEXT NOT NULL,
+                            description TEXT NOT NULL,
+                            date INTEGER NOT NULL
+                        )
+                    """)
+                    
+                    Log.d(TAG, "Migration completed successfully")
+                } catch (e: Exception) {
+                    Log.e(TAG, "Error during migration", e)
+                    throw e
+                }
+            }
+        }
+
+        private suspend fun populateDefaultCategories(dao: BookkeepingDao) {
+            try {
+                Log.d(TAG, "Starting to populate default categories")
+                // 支出类别
+                listOf(
+                    "餐饮",
+                    "交通",
+                    "购物",
+                    "娱乐",
+                    "医疗",
+                    "住房",
+                    "其他支出"
+                ).forEach { name ->
+                    try {
+                        dao.insertCategory(Category(name = name, type = TransactionType.EXPENSE))
+                        Log.d(TAG, "Added expense category: $name")
+                    } catch (e: Exception) {
+                        Log.e(TAG, "Error adding expense category: $name", e)
+                    }
+                }
+                
+                // 收入类别
+                listOf(
+                    "工资",
+                    "奖金",
+                    "投资",
+                    "其他收入"
+                ).forEach { name ->
+                    try {
+                        dao.insertCategory(Category(name = name, type = TransactionType.INCOME))
+                        Log.d(TAG, "Added income category: $name")
+                    } catch (e: Exception) {
+                        Log.e(TAG, "Error adding income category: $name", e)
+                    }
+                }
+                Log.d(TAG, "Finished populating default categories")
+            } catch (e: Exception) {
+                Log.e(TAG, "Error during category population", e)
+            }
+        }
+
+        fun getDatabase(context: Context): BookkeepingDatabase {
+            return Instance ?: synchronized(this) {
+                try {
+                    Log.d(TAG, "Creating new database instance")
+                    val instance = Room.databaseBuilder(
+                        context.applicationContext,
+                        BookkeepingDatabase::class.java,
+                        "bookkeeping_database"
+                    )
+                    .addCallback(object : RoomDatabase.Callback() {
+                        override fun onCreate(db: SupportSQLiteDatabase) {
+                            super.onCreate(db)
+                            Log.d(TAG, "Database created, initializing default categories")
+                            CoroutineScope(Dispatchers.IO).launch {
+                                try {
+                                    Instance?.let { database ->
+                                        populateDefaultCategories(database.bookkeepingDao())
+                                    }
+                                } catch (e: Exception) {
+                                    Log.e(TAG, "Error in onCreate callback", e)
+                                }
+                            }
+                        }
+                    })
+                    .addMigrations(MIGRATION_1_2)
+                    .fallbackToDestructiveMigration()  // 如果迁移失败，允许重建数据库
+                    .build()
+                    
+                    Instance = instance
+                    Log.d(TAG, "Database instance created successfully")
+                    instance
+                } catch (e: Exception) {
+                    Log.e(TAG, "Error creating database", e)
+                    throw e
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,21 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.TypeConverter
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+class Converters {
+    private val formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME
+
+    @TypeConverter
+    fun fromTimestamp(value: String?): LocalDateTime? {
+        return value?.let {
+            return LocalDateTime.parse(it, formatter)
+        }
+    }
+
+    @TypeConverter
+    fun dateToTimestamp(date: LocalDateTime?): String? {
+        return date?.format(formatter)
+    }
+}

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

@@ -0,0 +1,16 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.time.LocalDateTime
+
+@Entity(tableName = "records")
+data class Record(
+    @PrimaryKey(autoGenerate = true)
+    val id: Long = 0,
+    val amount: Double,
+    val category: String,
+    val description: String,
+    val dateTime: LocalDateTime = LocalDateTime.now(),
+    val isExpense: Boolean = true
+)

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

@@ -0,0 +1,29 @@
+package com.yovinchen.bookkeeping.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+import java.time.LocalDateTime
+
+@Dao
+interface RecordDao {
+    @Query("SELECT * FROM records ORDER BY dateTime DESC")
+    fun getAllRecords(): Flow<List<Record>>
+
+    @Query("SELECT * FROM records WHERE dateTime BETWEEN :startDate AND :endDate ORDER BY dateTime DESC")
+    fun getRecordsByDateRange(startDate: LocalDateTime, endDate: LocalDateTime): Flow<List<Record>>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertRecord(record: Record)
+
+    @Update
+    suspend fun updateRecord(record: Record)
+
+    @Delete
+    suspend fun deleteRecord(record: Record)
+
+    @Query("SELECT SUM(amount) FROM records WHERE isExpense = :isExpense AND dateTime BETWEEN :startDate AND :endDate")
+    fun getTotalAmountByType(isExpense: Boolean, startDate: LocalDateTime, endDate: LocalDateTime): Flow<Double?>
+
+    @Query("SELECT * FROM records WHERE category = :category ORDER BY dateTime DESC")
+    fun getRecordsByCategory(category: String): Flow<List<Record>>
+}

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

@@ -0,0 +1,23 @@
+package com.yovinchen.bookkeeping.data
+
+import kotlinx.coroutines.flow.Flow
+import java.time.LocalDateTime
+
+class RecordRepository(private val recordDao: RecordDao) {
+    fun getAllRecords(): Flow<List<Record>> = recordDao.getAllRecords()
+
+    fun getRecordsByDateRange(startDate: LocalDateTime, endDate: LocalDateTime): Flow<List<Record>> =
+        recordDao.getRecordsByDateRange(startDate, endDate)
+
+    suspend fun insertRecord(record: Record) = recordDao.insertRecord(record)
+
+    suspend fun updateRecord(record: Record) = recordDao.updateRecord(record)
+
+    suspend fun deleteRecord(record: Record) = recordDao.deleteRecord(record)
+
+    fun getTotalAmountByType(isExpense: Boolean, startDate: LocalDateTime, endDate: LocalDateTime): Flow<Double?> =
+        recordDao.getTotalAmountByType(isExpense, startDate, endDate)
+
+    fun getRecordsByCategory(category: String): Flow<List<Record>> =
+        recordDao.getRecordsByCategory(category)
+}

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

@@ -0,0 +1,45 @@
+package com.yovinchen.bookkeeping.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import androidx.room.TypeConverter
+import androidx.room.TypeConverters
+import java.util.Date
+
+enum class TransactionType {
+    INCOME, EXPENSE
+}
+
+class Converters {
+    @TypeConverter
+    fun fromTimestamp(value: Long?): Date? {
+        return value?.let { Date(it) }
+    }
+
+    @TypeConverter
+    fun dateToTimestamp(date: Date?): Long? {
+        return date?.time
+    }
+
+    @TypeConverter
+    fun fromTransactionType(value: String): TransactionType {
+        return enumValueOf<TransactionType>(value)
+    }
+
+    @TypeConverter
+    fun transactionTypeToString(type: TransactionType): String {
+        return type.name
+    }
+}
+
+@Entity(tableName = "bookkeeping_records")
+@TypeConverters(Converters::class)
+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
+)

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

@@ -0,0 +1,12 @@
+package com.yovinchen.bookkeeping.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "categories")
+data class Category(
+    @PrimaryKey(autoGenerate = true)
+    val id: Long = 0,
+    val name: String,
+    val type: TransactionType
+)

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

@@ -0,0 +1,10 @@
+package com.yovinchen.bookkeeping.model
+
+import androidx.compose.ui.graphics.Color
+
+sealed class ThemeMode {
+    object FOLLOW_SYSTEM : ThemeMode()
+    object LIGHT : ThemeMode()
+    object DARK : ThemeMode()
+    data class CUSTOM(val primaryColor: Color) : ThemeMode()
+}

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

@@ -0,0 +1,162 @@
+package com.yovinchen.bookkeeping.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+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.foundation.shape.CircleShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Check
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Slider
+import androidx.compose.material3.Text
+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.graphics.luminance
+import androidx.compose.ui.unit.dp
+
+val predefinedColors = listOf(
+    Color(0xFF6200EE), // 默认紫色
+    Color(0xFF3700B3),
+    Color(0xFF03DAC6),
+    Color(0xFF018786),
+    Color(0xFFE91E63), // Pink
+    Color(0xFFF44336), // Red
+    Color(0xFFFF9800), // Orange
+    Color(0xFFFFEB3B), // Yellow
+    Color(0xFF4CAF50), // Green
+    Color(0xFF2196F3), // Blue
+    Color(0xFF9C27B0), // Purple
+    Color(0xFF795548), // Brown
+)
+
+@Composable
+fun ColorPicker(
+    selectedColor: Color,
+    onColorSelected: (Color) -> Unit
+) {
+    var showCustomColorPicker by remember { mutableStateOf(false) }
+    
+    Column(modifier = Modifier.padding(16.dp)) {
+        // 预定义颜色网格
+        LazyVerticalGrid(
+            columns = GridCells.Fixed(6),
+            horizontalArrangement = Arrangement.spacedBy(8.dp),
+            verticalArrangement = Arrangement.spacedBy(8.dp),
+            modifier = Modifier.padding(bottom = 16.dp)
+        ) {
+            items(predefinedColors) { color ->
+                ColorItem(
+                    color = color,
+                    isSelected = selectedColor == color,
+                    onClick = { onColorSelected(color) }
+                )
+            }
+        }
+
+        // 自定义颜色按钮
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .clickable { showCustomColorPicker = !showCustomColorPicker }
+                .padding(vertical = 8.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Text(
+                text = "自定义颜色",
+                style = MaterialTheme.typography.bodyLarge,
+                modifier = Modifier.weight(1f)
+            )
+        }
+
+        // 自定义颜色选择器
+        if (showCustomColorPicker) {
+            CustomColorPicker(
+                initialColor = selectedColor,
+                onColorSelected = onColorSelected
+            )
+        }
+    }
+}
+
+@Composable
+private fun ColorItem(
+    color: Color,
+    isSelected: Boolean,
+    onClick: () -> Unit
+) {
+    Box(
+        modifier = Modifier
+            .size(48.dp)
+            .clip(CircleShape)
+            .background(color)
+            .clickable(onClick = onClick)
+            .then(
+                if (isSelected) {
+                    Modifier.border(2.dp, MaterialTheme.colorScheme.onSurface, CircleShape)
+                } else {
+                    Modifier
+                }
+            ),
+        contentAlignment = Alignment.Center
+    ) {
+        if (isSelected) {
+            Icon(
+                imageVector = Icons.Default.Check,
+                contentDescription = "Selected",
+                tint = if (color.luminance() > 0.5f) Color.Black else Color.White
+            )
+        }
+    }
+}
+
+@Composable
+private fun CustomColorPicker(
+    initialColor: Color,
+    onColorSelected: (Color) -> Unit
+) {
+    var red by remember { mutableStateOf(initialColor.red) }
+    var green by remember { mutableStateOf(initialColor.green) }
+    var blue by remember { mutableStateOf(initialColor.blue) }
+
+    Column(modifier = Modifier.padding(8.dp)) {
+        ColorSlider("红色", red) { red = it }
+        ColorSlider("绿色", green) { green = it }
+        ColorSlider("蓝色", blue) { blue = it }
+
+        // 预览颜色
+        val currentColor = Color(red, green, blue)
+        Box(
+            modifier = Modifier
+                .padding(top = 16.dp)
+                .size(48.dp)
+                .clip(CircleShape)
+                .background(currentColor)
+                .clickable { onColorSelected(currentColor) }
+        )
+    }
+}
+
+@Composable
+private fun ColorSlider(
+    label: String,
+    value: Float,
+    onValueChange: (Float) -> Unit
+) {
+    Column {
+        Text(text = label, style = MaterialTheme.typography.bodyMedium)
+        Slider(
+            value = value,
+            onValueChange = onValueChange,
+            valueRange = 0f..1f,
+            modifier = Modifier.padding(horizontal = 8.dp)
+        )
+    }
+}

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

@@ -0,0 +1,150 @@
+package com.yovinchen.bookkeeping.ui.components
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun DateTimePicker(
+    selectedDateTime: LocalDateTime,
+    onDateTimeSelected: (LocalDateTime) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    var showDatePicker by remember { mutableStateOf(false) }
+    var showTimePicker by remember { mutableStateOf(false) }
+    
+    val dateFormatter = remember { DateTimeFormatter.ofPattern("yyyy年MM月dd日") }
+    val timeFormatter = remember { DateTimeFormatter.ofPattern("HH:mm") }
+
+    Column(modifier = modifier) {
+        // 日期选择
+        OutlinedCard(
+            modifier = Modifier
+                .fillMaxWidth()
+                .clickable { showDatePicker = true }
+        ) {
+            Text(
+                text = selectedDateTime.format(dateFormatter),
+                modifier = Modifier.padding(16.dp),
+                style = MaterialTheme.typography.bodyLarge
+            )
+        }
+
+        Spacer(modifier = Modifier.height(8.dp))
+
+        // 时间选择
+        OutlinedCard(
+            modifier = Modifier
+                .fillMaxWidth()
+                .clickable { showTimePicker = true }
+        ) {
+            Text(
+                text = selectedDateTime.format(timeFormatter),
+                modifier = Modifier.padding(16.dp),
+                style = MaterialTheme.typography.bodyLarge
+            )
+        }
+    }
+
+    // 日期选择器对话框
+    if (showDatePicker) {
+        val datePickerState = rememberDatePickerState(
+            initialSelectedDateMillis = selectedDateTime
+                .toLocalDate()
+                .atStartOfDay()
+                .toInstant(java.time.ZoneOffset.UTC)
+                .toEpochMilli()
+        )
+        
+        DatePickerDialog(
+            onDismissRequest = { showDatePicker = false },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        datePickerState.selectedDateMillis?.let { millis ->
+                            val newDate = java.time.Instant.ofEpochMilli(millis)
+                                .atZone(java.time.ZoneOffset.UTC)
+                                .toLocalDate()
+                            val newDateTime = newDate.atTime(
+                                selectedDateTime.hour,
+                                selectedDateTime.minute
+                            )
+                            onDateTimeSelected(newDateTime)
+                        }
+                        showDatePicker = false
+                    }
+                ) {
+                    Text("确定")
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showDatePicker = false }) {
+                    Text("取消")
+                }
+            }
+        ) {
+            DatePicker(
+                state = datePickerState,
+                showModeToggle = false,
+                modifier = Modifier.padding(16.dp)
+            )
+        }
+    }
+
+    // 时间选择器对话框
+    if (showTimePicker) {
+        val timePickerState = rememberTimePickerState(
+            initialHour = selectedDateTime.hour,
+            initialMinute = selectedDateTime.minute
+        )
+        
+        TimePickerDialog(
+            onDismissRequest = { showTimePicker = false },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        val newDateTime = selectedDateTime
+                            .withHour(timePickerState.hour)
+                            .withMinute(timePickerState.minute)
+                        onDateTimeSelected(newDateTime)
+                        showTimePicker = false
+                    }
+                ) {
+                    Text("确定")
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showTimePicker = false }) {
+                    Text("取消")
+                }
+            }
+        ) {
+            TimePicker(
+                state = timePickerState,
+                modifier = Modifier.padding(16.dp)
+            )
+        }
+    }
+}
+
+@Composable
+private fun TimePickerDialog(
+    onDismissRequest: () -> Unit,
+    confirmButton: @Composable () -> Unit,
+    dismissButton: @Composable () -> Unit,
+    content: @Composable () -> Unit
+) {
+    AlertDialog(
+        onDismissRequest = onDismissRequest,
+        confirmButton = confirmButton,
+        dismissButton = dismissButton,
+        text = { content() }
+    )
+}

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

@@ -0,0 +1,166 @@
+package com.yovinchen.bookkeeping.ui.dialog
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Dialog
+import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.ui.components.DateTimePicker
+import java.time.LocalDateTime
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun AddRecordDialog(
+    onDismiss: () -> Unit,
+    onConfirm: (TransactionType, Double, String, String) -> Unit,
+    categories: List<Category>,
+    selectedType: TransactionType,
+    onTypeChange: (TransactionType) -> Unit,
+    selectedDateTime: LocalDateTime,
+    onDateTimeSelected: (LocalDateTime) -> Unit
+) {
+    var amount by remember { mutableStateOf("") }
+    var selectedCategory by remember { mutableStateOf<Category?>(null) }
+    var description by remember { mutableStateOf("") }
+    var expanded by remember { mutableStateOf(false) }
+
+    // 根据当前选择的类型过滤类别
+    val filteredCategories = categories.filter { it.type == selectedType }
+
+    Dialog(onDismissRequest = onDismiss) {
+        Card(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp),
+            elevation = CardDefaults.cardElevation(defaultElevation = 8.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(16.dp)
+            ) {
+                Text(
+                    text = "添加记录",
+                    style = MaterialTheme.typography.titleLarge
+                )
+
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // 类型选择
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceEvenly
+                ) {
+                    FilterChip(
+                        selected = selectedType == TransactionType.EXPENSE,
+                        onClick = { 
+                            onTypeChange(TransactionType.EXPENSE)
+                            selectedCategory = null
+                        },
+                        label = { Text("支出") }
+                    )
+                    FilterChip(
+                        selected = selectedType == TransactionType.INCOME,
+                        onClick = { 
+                            onTypeChange(TransactionType.INCOME)
+                            selectedCategory = null
+                        },
+                        label = { Text("收入") }
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // 日期时间选择
+                DateTimePicker(
+                    selectedDateTime = selectedDateTime,
+                    onDateTimeSelected = onDateTimeSelected,
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // 金额输入
+                OutlinedTextField(
+                    value = amount,
+                    onValueChange = { amount = it },
+                    label = { Text("金额") },
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // 类别选择
+                ExposedDropdownMenuBox(
+                    expanded = expanded,
+                    onExpandedChange = { expanded = it }
+                ) {
+                    OutlinedTextField(
+                        value = selectedCategory?.name ?: "",
+                        onValueChange = {},
+                        readOnly = true,
+                        label = { Text("类别") },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .menuAnchor()
+                    )
+                    ExposedDropdownMenu(
+                        expanded = expanded,
+                        onDismissRequest = { expanded = false }
+                    ) {
+                        filteredCategories.forEach { category ->
+                            DropdownMenuItem(
+                                text = { Text(category.name) },
+                                onClick = {
+                                    selectedCategory = category
+                                    expanded = false
+                                }
+                            )
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // 描述输入
+                OutlinedTextField(
+                    value = description,
+                    onValueChange = { description = it },
+                    label = { Text("描述") },
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // 按钮
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("取消")
+                    }
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Button(
+                        onClick = {
+                            val amountValue = amount.toDoubleOrNull() ?: 0.0
+                            selectedCategory?.let { category ->
+                                onConfirm(selectedType, amountValue, category.name, description)
+                                onDismiss()
+                            }
+                        },
+                        enabled = amount.isNotEmpty() && selectedCategory != null
+                    ) {
+                        Text("确定")
+                    }
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,256 @@
+package com.yovinchen.bookkeeping.ui.dialog
+
+import android.util.Log
+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.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.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.TransactionType
+
+private const val TAG = "CategoryManagementDialog"
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun CategoryManagementDialog(
+    onDismiss: () -> Unit,
+    categories: List<Category>,
+    onAddCategory: (String, TransactionType) -> Unit,
+    onDeleteCategory: (Category) -> Unit,
+    onUpdateCategory: (Category, String) -> 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 }
+
+    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(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 8.dp)
+                ) {
+                    // 类型选择
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceEvenly
+                    ) {
+                        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 = ""
+                                }
+                            }
+                        ) {
+                            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 ->
+                            Row(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalArrangement = Arrangement.SpaceBetween,
+                                verticalAlignment = Alignment.CenterVertically
+                            ) {
+                                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
+                                    }
+                                ) {
+                                    Icon(Icons.Default.Delete, contentDescription = "删除类别")
+                                }
+                            }
+                        }
+                    }
+                }
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = { 
+                        Log.d(TAG, "Main dialog confirmed")
+                        showDialog = false
+                        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")
+                }
+            }
+        )
+    }
+
+    // 编辑类别对话框
+    if (showEditDialog && selectedCategory != null) {
+        AlertDialog(
+            onDismissRequest = {
+                showEditDialog = false
+                selectedCategory = null
+                editingCategoryName = ""
+            },
+            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")
+                }
+            }
+        )
+    }
+}

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

@@ -0,0 +1,97 @@
+@file:OptIn(ExperimentalMaterial3Api::class)
+
+package com.yovinchen.bookkeeping.ui.dialog
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.Category
+import java.util.Date
+
+@Composable
+fun RecordEditDialog(
+    record: BookkeepingRecord,
+    categories: List<Category>,
+    onDismiss: () -> Unit,
+    onConfirm: (BookkeepingRecord) -> Unit
+) {
+    var amount by remember { mutableStateOf(record.amount.toString()) }
+    var selectedCategory by remember { mutableStateOf(record.category) }
+    var description by remember { mutableStateOf(record.description) }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text("编辑记录") },
+        text = {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                OutlinedTextField(
+                    value = amount,
+                    onValueChange = { amount = it },
+                    label = { Text("金额") },
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                OutlinedTextField(
+                    value = description,
+                    onValueChange = { description = it },
+                    label = { Text("描述") },
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                ExposedDropdownMenuBox(
+                    expanded = false,
+                    onExpandedChange = {},
+                ) {
+                    OutlinedTextField(
+                        value = selectedCategory,
+                        onValueChange = {},
+                        readOnly = true,
+                        label = { Text("类别") },
+                        modifier = Modifier.fillMaxWidth()
+                    )
+
+                    DropdownMenu(
+                        expanded = false,
+                        onDismissRequest = { },
+                    ) {
+                        categories.filter { it.type == record.type }.forEach { category ->
+                            DropdownMenuItem(
+                                text = { Text(category.name) },
+                                onClick = { selectedCategory = category.name }
+                            )
+                        }
+                    }
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(
+                onClick = {
+                    val updatedRecord = record.copy(
+                        amount = amount.toDoubleOrNull() ?: record.amount,
+                        category = selectedCategory,
+                        description = description,
+                        date = Date()
+                    )
+                    onConfirm(updatedRecord)
+                    onDismiss()
+                }
+            ) {
+                Text("确认")
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss) {
+                Text("取消")
+            }
+        }
+    )
+}

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

@@ -0,0 +1,94 @@
+package com.yovinchen.bookkeeping.ui.navigation
+
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Home
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.navigation.NavDestination.Companion.hierarchy
+import androidx.navigation.NavGraph.Companion.findStartDestination
+import androidx.navigation.compose.NavHost
+import androidx.compose.ui.graphics.Color
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.currentBackStackEntryAsState
+import androidx.navigation.compose.rememberNavController
+import com.yovinchen.bookkeeping.model.ThemeMode
+import com.yovinchen.bookkeeping.ui.screen.HomeScreen
+import com.yovinchen.bookkeeping.ui.screen.SettingsScreen
+
+sealed class Screen(val route: String, val icon: @Composable () -> Unit, val label: String) {
+    object Home : Screen(
+        route = "home",
+        icon = { Icon(Icons.Default.Home, contentDescription = "主页") },
+        label = "主页"
+    )
+    object Settings : Screen(
+        route = "settings",
+        icon = { Icon(Icons.Default.Settings, contentDescription = "设置") },
+        label = "设置"
+    )
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MainNavigation(
+    currentTheme: ThemeMode,
+    onThemeChange: (ThemeMode) -> Unit
+) {
+    val navController = rememberNavController()
+    val items = listOf(Screen.Home, Screen.Settings)
+
+    Scaffold(
+        bottomBar = {
+            NavigationBar(
+                containerColor = MaterialTheme.colorScheme.surface,
+                contentColor = MaterialTheme.colorScheme.onSurface,
+            ) {
+                val navBackStackEntry by navController.currentBackStackEntryAsState()
+                val currentDestination = navBackStackEntry?.destination
+
+                items.forEach { screen ->
+                    NavigationBarItem(
+                        icon = screen.icon,
+                        label = { Text(screen.label) },
+                        selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true,
+                        onClick = {
+                            navController.navigate(screen.route) {
+                                popUpTo(navController.graph.findStartDestination().id) {
+                                    saveState = true
+                                }
+                                launchSingleTop = true
+                                restoreState = true
+                            }
+                        },
+                        colors = NavigationBarItemDefaults.colors(
+                            selectedIconColor = MaterialTheme.colorScheme.primary,
+                            selectedTextColor = MaterialTheme.colorScheme.primary,
+                            unselectedIconColor = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.6f),
+                            unselectedTextColor = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.6f),
+                            indicatorColor = MaterialTheme.colorScheme.surfaceVariant
+                        )
+                    )
+                }
+            }
+        }
+    ) { paddingValues ->
+        NavHost(
+            navController = navController,
+            startDestination = Screen.Home.route,
+            modifier = Modifier.padding(paddingValues)
+        ) {
+            composable(Screen.Home.route) {
+                HomeScreen()
+            }
+            composable(Screen.Settings.route) {
+                SettingsScreen(
+                    currentTheme = currentTheme,
+                    onThemeChange = onThemeChange
+                )
+            }
+        }
+    }
+}

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

@@ -0,0 +1,312 @@
+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.Add
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.Settings
+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.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.yovinchen.bookkeeping.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.TransactionType
+import com.yovinchen.bookkeeping.ui.dialog.AddRecordDialog
+import com.yovinchen.bookkeeping.ui.dialog.CategoryManagementDialog
+import com.yovinchen.bookkeeping.ui.dialog.RecordEditDialog
+import com.yovinchen.bookkeeping.viewmodel.HomeViewModel
+import java.text.SimpleDateFormat
+import java.util.*
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun HomeScreen(
+    modifier: Modifier = Modifier,
+    viewModel: HomeViewModel = viewModel()
+) {
+    val records by viewModel.filteredRecords.collectAsState()
+    val totalIncome by viewModel.totalIncome.collectAsState()
+    val totalExpense by viewModel.totalExpense.collectAsState()
+    val categories by viewModel.categories.collectAsState()
+    val selectedType by viewModel.selectedCategoryType.collectAsState()
+    val selectedRecordType by viewModel.selectedRecordType.collectAsState()
+    
+    var showAddDialog by remember { mutableStateOf(false) }
+    var showCategoryDialog by remember { mutableStateOf(false) }
+    var selectedRecord by remember { mutableStateOf<BookkeepingRecord?>(null) }
+
+    Scaffold(
+        modifier = modifier.fillMaxSize(),
+        floatingActionButton = {
+            FloatingActionButton(
+                onClick = { showAddDialog = true }
+            ) {
+                Icon(Icons.Default.Add, contentDescription = "添加记录")
+            }
+        },
+        floatingActionButtonPosition = FabPosition.End,
+        topBar = {
+            TopAppBar(
+                title = { Text("记账本") },
+                actions = {
+                    IconButton(onClick = { showCategoryDialog = true }) {
+                        Icon(Icons.Default.Settings, contentDescription = "类别管理")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+        ) {
+            // 顶部统计信息
+            MonthlyStatistics(
+                totalIncome = totalIncome,
+                totalExpense = totalExpense,
+                onIncomeClick = { viewModel.setSelectedRecordType(TransactionType.INCOME) },
+                onExpenseClick = { viewModel.setSelectedRecordType(TransactionType.EXPENSE) },
+                selectedType = selectedRecordType,
+                onClearFilter = { viewModel.setSelectedRecordType(null) }
+            )
+
+            // 记录列表
+            LazyColumn(
+                modifier = Modifier.fillMaxSize(),
+                contentPadding = PaddingValues(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                items(records) { record ->
+                    RecordItem(
+                        record = record,
+                        onClick = { selectedRecord = record },
+                        onDelete = { viewModel.deleteRecord(record) }
+                    )
+                }
+            }
+        }
+
+        // 添加记录对话框
+        if (showAddDialog) {
+            val selectedDateTime by viewModel.selectedDateTime.collectAsState()
+            AddRecordDialog(
+                onDismiss = {
+                    showAddDialog = false
+                    viewModel.resetSelectedDateTime()
+                },
+                onConfirm = { type, amount, category, description ->
+                    viewModel.addRecord(type, amount, category, description)
+                    showAddDialog = false
+                },
+                categories = categories,
+                selectedType = selectedType,
+                onTypeChange = { viewModel.setSelectedCategoryType(it) },
+                selectedDateTime = selectedDateTime,
+                onDateTimeSelected = { viewModel.setSelectedDateTime(it) }
+            )
+        }
+
+        // 类别管理对话框
+        if (showCategoryDialog) {
+            CategoryManagementDialog(
+                onDismiss = { showCategoryDialog = false },
+                categories = categories,
+                onAddCategory = { name, type -> viewModel.addCategory(name, type) },
+                onDeleteCategory = { category -> viewModel.deleteCategory(category) },
+                onUpdateCategory = { category, newName -> viewModel.updateCategory(category, newName) },
+                selectedType = selectedType,
+                onTypeChange = { viewModel.setSelectedCategoryType(it) }
+            )
+        }
+
+        // 编辑记录对话框
+        selectedRecord?.let { record ->
+            RecordEditDialog(
+                record = record,
+                categories = categories,
+                onDismiss = { selectedRecord = null },
+                onConfirm = { updatedRecord ->
+                    viewModel.updateRecord(updatedRecord)
+                    selectedRecord = null
+                }
+            )
+        }
+    }
+}
+
+@Composable
+fun MonthlyStatistics(
+    totalIncome: Double,
+    totalExpense: Double,
+    onIncomeClick: () -> Unit,
+    onExpenseClick: () -> Unit,
+    selectedType: TransactionType?,
+    onClearFilter: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(16.dp),
+        elevation = CardDefaults.cardElevation(defaultElevation = 4.dp)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp)
+        ) {
+            Text(
+                text = "本月统计",
+                style = MaterialTheme.typography.titleLarge,
+                modifier = Modifier.padding(bottom = 8.dp)
+            )
+
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                // 收入统计
+                Column(
+                    modifier = Modifier
+                        .weight(1f)
+                        .clickable { onIncomeClick() }
+                        .background(
+                            if (selectedType == TransactionType.INCOME)
+                                MaterialTheme.colorScheme.primaryContainer
+                            else
+                                Color.Transparent,
+                            RoundedCornerShape(8.dp)
+                        )
+                        .padding(8.dp)
+                ) {
+                    Text(
+                        text = "收入",
+                        style = MaterialTheme.typography.titleMedium
+                    )
+                    Text(
+                        text = "¥${String.format("%.2f", totalIncome)}",
+                        style = MaterialTheme.typography.bodyLarge,
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                }
+
+                Spacer(modifier = Modifier.width(16.dp))
+
+                // 支出统计
+                Column(
+                    modifier = Modifier
+                        .weight(1f)
+                        .clickable { onExpenseClick() }
+                        .background(
+                            if (selectedType == TransactionType.EXPENSE)
+                                MaterialTheme.colorScheme.primaryContainer
+                            else
+                                Color.Transparent,
+                            RoundedCornerShape(8.dp)
+                        )
+                        .padding(8.dp)
+                ) {
+                    Text(
+                        text = "支出",
+                        style = MaterialTheme.typography.titleMedium
+                    )
+                    Text(
+                        text = "¥${String.format("%.2f", totalExpense)}",
+                        style = MaterialTheme.typography.bodyLarge,
+                        color = MaterialTheme.colorScheme.error
+                    )
+                }
+            }
+
+            if (selectedType != null) {
+                TextButton(
+                    onClick = onClearFilter,
+                    modifier = Modifier.align(Alignment.End)
+                ) {
+                    Text("清除筛选")
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun RecordItem(
+    record: BookkeepingRecord,
+    onClick: () -> Unit = {},
+    onDelete: () -> Unit = {},
+    modifier: Modifier = Modifier
+) {
+    Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick),
+        elevation = CardDefaults.cardElevation(defaultElevation = 2.dp)
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Column(modifier = Modifier.weight(1f)) {
+                Text(
+                    text = record.category,
+                    style = MaterialTheme.typography.titleMedium
+                )
+                if (record.description.isNotEmpty()) {
+                    Text(
+                        text = record.description,
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                }
+                Text(
+                    text = SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault())
+                        .format(record.date),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+
+            Row(
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = if (record.type == TransactionType.EXPENSE) "-" else "+",
+                    color = if (record.type == TransactionType.EXPENSE)
+                        MaterialTheme.colorScheme.error
+                    else
+                        MaterialTheme.colorScheme.primary,
+                    style = MaterialTheme.typography.titleMedium
+                )
+                Text(
+                    text = String.format("%.2f", record.amount),
+                    color = if (record.type == TransactionType.EXPENSE)
+                        MaterialTheme.colorScheme.error
+                    else
+                        MaterialTheme.colorScheme.primary,
+                    style = MaterialTheme.typography.titleMedium,
+                    modifier = Modifier.padding(end = 8.dp)
+                )
+                IconButton(onClick = onDelete) {
+                    Icon(
+                        Icons.Default.Delete,
+                        contentDescription = "删除",
+                        tint = MaterialTheme.colorScheme.error
+                    )
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,123 @@
+package com.yovinchen.bookkeeping.ui.screen
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.yovinchen.bookkeeping.model.ThemeMode
+import com.yovinchen.bookkeeping.ui.components.ColorPicker
+import com.yovinchen.bookkeeping.ui.components.predefinedColors
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsScreen(
+    currentTheme: ThemeMode,
+    onThemeChange: (ThemeMode) -> Unit
+) {
+    var showThemeDialog by remember { mutableStateOf(false) }
+
+    Column(modifier = Modifier.fillMaxSize()) {
+        // 主题设置项
+        ListItem(
+            headlineContent = { Text("主题设置") },
+            supportingContent = {
+                Text(
+                    when (currentTheme) {
+                        is ThemeMode.FOLLOW_SYSTEM -> "跟随系统"
+                        is ThemeMode.LIGHT -> "浅色"
+                        is ThemeMode.DARK -> "深色"
+                        is ThemeMode.CUSTOM -> "自定义颜色"
+                    }
+                )
+            },
+            modifier = Modifier.clickable { showThemeDialog = true }
+        )
+
+        if (showThemeDialog) {
+            AlertDialog(
+                onDismissRequest = { showThemeDialog = false },
+                title = { Text("选择主题") },
+                text = {
+                    Column {
+                        // 基本主题选项
+                        ThemeOption(
+                            text = "跟随系统",
+                            selected = currentTheme is ThemeMode.FOLLOW_SYSTEM,
+                            onClick = { 
+                                onThemeChange(ThemeMode.FOLLOW_SYSTEM)
+                                showThemeDialog = false 
+                            }
+                        )
+                        
+                        ThemeOption(
+                            text = "浅色",
+                            selected = currentTheme is ThemeMode.LIGHT,
+                            onClick = { 
+                                onThemeChange(ThemeMode.LIGHT)
+                                showThemeDialog = false 
+                            }
+                        )
+                        
+                        ThemeOption(
+                            text = "深色",
+                            selected = currentTheme is ThemeMode.DARK,
+                            onClick = { 
+                                onThemeChange(ThemeMode.DARK)
+                                showThemeDialog = false 
+                            }
+                        )
+
+                        Divider(modifier = Modifier.padding(vertical = 8.dp))
+
+                        // 颜色选择器
+                        Text(
+                            text = "自定义颜色",
+                            style = MaterialTheme.typography.titleMedium,
+                            modifier = Modifier.padding(vertical = 8.dp)
+                        )
+                        
+                        ColorPicker(
+                            selectedColor = when (currentTheme) {
+                                is ThemeMode.CUSTOM -> currentTheme.primaryColor
+                                else -> predefinedColors[0]
+                            },
+                            onColorSelected = { color ->
+                                onThemeChange(ThemeMode.CUSTOM(color))
+                                showThemeDialog = false
+                            }
+                        )
+                    }
+                },
+                confirmButton = {
+                    TextButton(onClick = { showThemeDialog = false }) {
+                        Text("关闭")
+                    }
+                }
+            )
+        }
+    }
+}
+
+@Composable
+private fun ThemeOption(
+    text: String,
+    selected: Boolean,
+    onClick: () -> Unit
+) {
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(vertical = 8.dp)
+    ) {
+        RadioButton(
+            selected = selected,
+            onClick = onClick
+        )
+        Text(text, modifier = Modifier.padding(start = 8.dp))
+    }
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/theme/Color.kt

@@ -0,0 +1,17 @@
+package com.yovinchen.bookkeeping.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+// Dark Theme Colors
+val DarkPrimary = Color(0xFF9B7EE3)        // 深紫色
+val DarkSecondary = Color(0xFF6C5B7B)      // 暗紫灰色
+val DarkBackground = Color(0xFF121212)      // 深黑色
+val DarkSurface = Color(0xFF1E1E1E)        // 深灰色
+val DarkError = Color(0xFFCF6679)          // 深红色
+
+// Light Theme Colors
+val LightPrimary = Color(0xFF6200EE)       // 亮紫色
+val LightSecondary = Color(0xFF8E8E93)     // 浅灰色
+val LightBackground = Color(0xFFF5F5F5)     // 浅灰白色
+val LightSurface = Color(0xFFFFFFFF)        // 纯白色
+val LightError = Color(0xFFB00020)          // 红色

app/src/main/java/com/yovinchen/bookkeeping/ui/theme/Theme.kt

@@ -0,0 +1,76 @@
+package com.yovinchen.bookkeeping.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ColorScheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
+import androidx.core.view.WindowCompat
+
+private val DarkColorScheme = darkColorScheme(
+    primary = DarkPrimary,
+    secondary = DarkSecondary,
+    background = DarkBackground,
+    surface = DarkSurface,
+    error = DarkError,
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onBackground = Color.White,
+    onSurface = Color.White,
+    onError = Color.Black
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = LightPrimary,
+    secondary = LightSecondary,
+    background = LightBackground,
+    surface = LightSurface,
+    error = LightError,
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onBackground = Color.Black,
+    onSurface = Color.Black,
+    onError = Color.White
+)
+
+@Composable
+fun BookkeepingTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    dynamicColor: Boolean = true,
+    customColorScheme: ColorScheme? = null,
+    content: @Composable () -> Unit
+) {
+    val colorScheme = when {
+        customColorScheme != null -> customColorScheme
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+    val view = LocalView.current
+    if (!view.isInEditMode) {
+        SideEffect {
+            val window = (view.context as Activity).window
+            window.statusBarColor = colorScheme.primary.toArgb()
+            WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = !darkTheme
+        }
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}

app/src/main/java/com/yovinchen/bookkeeping/ui/theme/Type.kt

@@ -0,0 +1,34 @@
+package com.yovinchen.bookkeeping.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)

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

@@ -0,0 +1,184 @@
+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.model.BookkeepingRecord
+import com.yovinchen.bookkeeping.model.Category
+import com.yovinchen.bookkeeping.model.TransactionType
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import java.time.LocalDateTime
+import java.time.ZoneId
+import java.util.Date
+import java.util.Calendar
+
+class HomeViewModel(application: Application) : AndroidViewModel(application) {
+    private val TAG = "HomeViewModel"
+    private val database = BookkeepingDatabase.getDatabase(application)
+    private val dao = database.bookkeepingDao()
+
+    val records = dao.getAllRecords()
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+
+    private val _totalIncome = MutableStateFlow(0.0)
+    val totalIncome: StateFlow<Double> = _totalIncome.asStateFlow()
+
+    private val _totalExpense = MutableStateFlow(0.0)
+    val totalExpense: StateFlow<Double> = _totalExpense.asStateFlow()
+
+    private val _selectedCategoryType = MutableStateFlow(TransactionType.EXPENSE)
+    val selectedCategoryType: StateFlow<TransactionType> = _selectedCategoryType.asStateFlow()
+
+    private val _selectedRecordType = MutableStateFlow<TransactionType?>(null)
+    val selectedRecordType: StateFlow<TransactionType?> = _selectedRecordType.asStateFlow()
+
+    private val _selectedDateTime = MutableStateFlow(LocalDateTime.now())
+    val selectedDateTime: StateFlow<LocalDateTime> = _selectedDateTime.asStateFlow()
+
+    val categories: StateFlow<List<Category>> = _selectedCategoryType
+        .flatMapLatest { type ->
+            dao.getCategoriesByType(type)
+        }
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5000),
+            initialValue = emptyList()
+        )
+
+    val filteredRecords = combine(records, selectedRecordType) { records, type ->
+        when (type) {
+            null -> records.sortedByDescending { it.date }
+            else -> records.filter { it.type == type }.sortedByDescending { it.date }
+        }
+    }.stateIn(
+        scope = viewModelScope,
+        started = SharingStarted.WhileSubscribed(5000),
+        initialValue = emptyList()
+    )
+
+    private val _uiState = MutableStateFlow(UiState())
+    val uiState: StateFlow<UiState> = _uiState.asStateFlow()
+
+    init {
+        viewModelScope.launch {
+            records.collect { recordsList ->
+                updateTotals(recordsList)
+            }
+        }
+    }
+
+    private fun updateTotals(records: List<BookkeepingRecord>) {
+        _totalIncome.value = records
+            .filter { it.type == TransactionType.INCOME }
+            .sumOf { it.amount }
+
+        _totalExpense.value = records
+            .filter { it.type == TransactionType.EXPENSE }
+            .sumOf { it.amount }
+    }
+
+    fun addRecord(type: TransactionType, amount: Double, category: String, description: String) {
+        viewModelScope.launch {
+            val record = BookkeepingRecord(
+                amount = amount,
+                type = type,
+                category = category,
+                description = description,
+                date = Date.from(_selectedDateTime.value.atZone(ZoneId.systemDefault()).toInstant())
+            )
+            dao.insertRecord(record)
+            resetSelectedDateTime()
+        }
+    }
+
+    fun setSelectedDateTime(dateTime: LocalDateTime) {
+        _selectedDateTime.value = dateTime
+    }
+
+    fun setSelectedCategoryType(type: TransactionType) {
+        _selectedCategoryType.value = type
+    }
+
+    fun setSelectedRecordType(type: TransactionType?) {
+        _selectedRecordType.value = type
+    }
+
+    fun resetSelectedDateTime() {
+        _selectedDateTime.value = LocalDateTime.now()
+    }
+
+    fun addCategory(name: String, type: TransactionType) {
+        viewModelScope.launch {
+            val category = Category(name = name, type = type)
+            dao.insertCategory(category)
+        }
+    }
+
+    fun updateCategory(category: Category, newName: String) {
+        viewModelScope.launch {
+            dao.updateCategory(category.copy(name = newName))
+        }
+    }
+
+    fun deleteCategory(category: Category) {
+        viewModelScope.launch {
+            dao.deleteCategory(category)
+        }
+    }
+
+    fun updateRecord(record: BookkeepingRecord) {
+        viewModelScope.launch {
+            dao.updateRecord(record)
+        }
+    }
+
+    fun deleteRecord(record: BookkeepingRecord) {
+        viewModelScope.launch {
+            dao.deleteRecord(record)
+        }
+    }
+
+    // 获取指定日期的记录
+    fun getRecordsByDate(date: LocalDateTime): Flow<List<BookkeepingRecord>> {
+        val calendar = Calendar.getInstance().apply {
+            time = Date.from(date.atZone(ZoneId.systemDefault()).toInstant())
+            set(Calendar.HOUR_OF_DAY, 0)
+            set(Calendar.MINUTE, 0)
+            set(Calendar.SECOND, 0)
+            set(Calendar.MILLISECOND, 0)
+        }
+        val startOfDay = calendar.time
+        calendar.add(Calendar.DAY_OF_MONTH, 1)
+        val endOfDay = calendar.time
+        return dao.getRecordsByDateRange(startOfDay, endOfDay)
+    }
+
+    // 获取指定日期范围的记录
+    fun getRecordsByDateRange(startDate: LocalDateTime, endDate: LocalDateTime): Flow<List<BookkeepingRecord>> {
+        val start = Date.from(startDate.atZone(ZoneId.systemDefault()).toInstant())
+        val end = Date.from(endDate.atZone(ZoneId.systemDefault()).toInstant())
+        return dao.getRecordsByDateRange(start, end)
+    }
+
+    // 获取指定类别的记录
+    fun getRecordsByCategory(category: String): Flow<List<BookkeepingRecord>> {
+        return dao.getRecordsByCategory(category)
+    }
+
+    // 获取指定类型的记录
+    fun getRecordsByType(type: TransactionType): Flow<List<BookkeepingRecord>> {
+        return dao.getRecordsByType(type)
+    }
+}
+
+data class UiState(
+    val isAddingRecord: Boolean = false,
+    val isManagingCategories: Boolean = false
+)

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

@@ -0,0 +1,43 @@
+package com.yovinchen.bookkeeping.viewmodel
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import com.yovinchen.bookkeeping.data.AppDatabase
+import com.yovinchen.bookkeeping.data.Record
+import com.yovinchen.bookkeeping.data.RecordRepository
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+import java.time.LocalDateTime
+
+class RecordViewModel(application: Application) : AndroidViewModel(application) {
+    private val repository: RecordRepository
+    val allRecords: Flow<List<Record>>
+
+    init {
+        val recordDao = AppDatabase.getDatabase(application).recordDao()
+        repository = RecordRepository(recordDao)
+        allRecords = repository.getAllRecords()
+    }
+
+    fun getRecordsByDateRange(startDate: LocalDateTime, endDate: LocalDateTime): Flow<List<Record>> =
+        repository.getRecordsByDateRange(startDate, endDate)
+
+    fun insertRecord(record: Record) = viewModelScope.launch {
+        repository.insertRecord(record)
+    }
+
+    fun updateRecord(record: Record) = viewModelScope.launch {
+        repository.updateRecord(record)
+    }
+
+    fun deleteRecord(record: Record) = viewModelScope.launch {
+        repository.deleteRecord(record)
+    }
+
+    fun getTotalAmountByType(isExpense: Boolean, startDate: LocalDateTime, endDate: LocalDateTime): Flow<Double?> =
+        repository.getTotalAmountByType(isExpense, startDate, endDate)
+
+    fun getRecordsByCategory(category: String): Flow<List<Record>> =
+        repository.getRecordsByCategory(category)
+}

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

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

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

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/values/colors.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">bookkeeping</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.Bookkeeping" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

app/src/test/java/com/yovinchen/bookkeeping/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package com.yovinchen.bookkeeping
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}