feat:"初始化仓库，并更新基础代码。"

.gitignore

@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

@@ -0,0 +1,30 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "d7965e1e136a3f8b7889f556a75a078c986a0ed7"
+  channel: "master"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: d7965e1e136a3f8b7889f556a75a078c986a0ed7
+      base_revision: d7965e1e136a3f8b7889f556a75a078c986a0ed7
+    - platform: android
+      create_revision: d7965e1e136a3f8b7889f556a75a078c986a0ed7
+      base_revision: d7965e1e136a3f8b7889f556a75a078c986a0ed7
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

DATA_DESIGN.md

@@ -0,0 +1,63 @@
+# 记账应用数据设计文档
+
+本文档描述了本地存储的 SQLite 数据库结构，旨在方便后期迁移到后端数据库（如 MySQL/PostgreSQL）。
+
+## 数据库概览
+
+- **数据库名称**: `expense_tracker.db`
+- **版本**: 2
+
+## 表结构
+
+### 1. Categories (分类表)
+
+用于存储收支分类，支持多级分类（无限层级）。
+
+| 字段名 | 类型 | 描述 | 备注 |
+| :--- | :--- | :--- | :--- |
+| `id` | INTEGER | 主键ID | 自增 |
+| `name` | TEXT | 分类名称 | 例如：餐饮、交通 |
+| `type` | TEXT | 类型 | 枚举值: `income`, `expense` |
+| `icon` | TEXT | 图标标识 | Material Icon 的名称或代码 |
+| `color` | INTEGER | 颜色值 | 存储 ARGB 的整数值 |
+| `parentId` | INTEGER | 父分类ID | 外键关联 `Categories.id`，为空则为一级分类 |
+
+**预设数据示例:**
+
+```json
+[
+  { "id": 1, "name": "餐饮", "type": "expense", "icon": "restaurant", "color": 0xFFFF5722, "parentId": null },
+  { "id": 2, "name": "交通", "type": "expense", "icon": "directions_bus", "color": 0xFF2196F3, "parentId": null },
+  { "id": 8, "name": "早餐", "type": "expense", "icon": "breakfast_dining", "color": 0xFFFF5722, "parentId": 1 }
+]
+```
+
+### 2. Transactions (交易记录表)
+
+用于存储每一笔收支记录。
+
+| 字段名 | 类型 | 描述 | 备注 |
+| :--- | :--- | :--- | :--- |
+| `id` | TEXT | 主键ID | UUID 格式，方便后期同步 |
+| `amount` | REAL | 金额 | |
+| `type` | TEXT | 类型 | `income`, `expense` |
+| `categoryId` | INTEGER | 分类ID | 外键关联 `Categories.id` |
+| `date` | INTEGER | 交易日期 | Unix 时间戳 (毫秒) |
+| `note` | TEXT | 备注 | 可为空 |
+| `createdAt` | INTEGER | 创建时间 | Unix 时间戳 (毫秒) |
+| `updatedAt` | INTEGER | 更新时间 | Unix 时间戳 (毫秒) |
+
+**数据示例:**
+
+```json
+{
+  "id": "550e8400-e29b-41d4-a716-446655440000",
+  "amount": 25.5,
+  "type": "expense",
+  "categoryId": 8,
+  "date": 1678886400000,
+  "note": "豆浆油条",
+  "createdAt": 1678886400000,
+  "updatedAt": 1678886400000
+}
+```

README.md

@@ -0,0 +1,47 @@
+# Expense Tracker App (我的记账本)
+
+一个功能完善的现代化记账应用，使用 Flutter 开发，专为中文用户设计。
+
+## 核心功能
+
+1.  **现代化 UI 设计**:
+    *   采用 Material 3 设计风格，界面美观大方。
+    *   完全适配中文环境，操作流畅。
+    *   支持响应式布局。
+
+2.  **多级分类管理**:
+    *   支持无限层级的分类体系（如：餐饮 -> 早餐）。
+    *   提供直观的分类管理界面，支持增删改查。
+    *   支持为分类自定义图标和类型。
+
+3.  **强大的数据统计**:
+    *   **概览**: 饼图展示收支构成。
+    *   **趋势**: 折线图展示每日消费趋势。
+    *   **对比**: 柱状图直观对比收入与支出。
+    *   支持按月筛选查看历史数据。
+
+4.  **功能完善**:
+    *   本地 SQLite 存储，数据安全隐私。
+    *   支持备注、日期选择。
+    *   完善的数据校验和错误日志记录。
+
+## 数据设计
+
+详细的数据库设计文档请参考 [DATA_DESIGN.md](DATA_DESIGN.md)。
+
+## 运行项目
+
+确保已安装 Flutter SDK。
+
+```bash
+flutter pub get
+flutter run
+```
+
+## 技术栈
+
+- **Flutter**: UI 框架
+- **sqflite**: 本地数据库
+- **provider**: 状态管理
+- **fl_chart**: 可视化图表
+- **intl**: 国际化与格式化

analysis_options.yaml

@@ -0,0 +1,28 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

@@ -0,0 +1,14 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+.cxx/
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/to/reference-keystore
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle.kts

@@ -0,0 +1,44 @@
+plugins {
+    id("com.android.application")
+    id("kotlin-android")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "com.example.my_app"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_17.toString()
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.example.my_app"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.getByName("debug")
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,45 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="my_app"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>

android/app/src/main/kotlin/com/example/my_app/MainActivity.kt

@@ -0,0 +1,5 @@
+package com.example.my_app
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity()

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/build.gradle.kts

@@ -0,0 +1,24 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+val newBuildDir: Directory =
+    rootProject.layout.buildDirectory
+        .dir("../../build")
+        .get()
+rootProject.layout.buildDirectory.value(newBuildDir)
+
+subprojects {
+    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
+    project.layout.buildDirectory.value(newSubprojectBuildDir)
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+tasks.register<Delete>("clean") {
+    delete(rootProject.layout.buildDirectory)
+}

android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+org.gradle.caching=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://mirrors.huaweicloud.com/gradle/gradle-8.13-bin.zip

android/settings.gradle.kts

@@ -0,0 +1,26 @@
+pluginManagement {
+    val flutterSdkPath =
+        run {
+            val properties = java.util.Properties()
+            file("local.properties").inputStream().use { properties.load(it) }
+            val flutterSdkPath = properties.getProperty("flutter.sdk")
+            require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
+            flutterSdkPath
+        }
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
+    id("com.android.application") version "8.11.1" apply false
+    id("org.jetbrains.kotlin.android") version "2.2.20" apply false
+}
+
+include(":app")

ios/.gitignore

@@ -0,0 +1,34 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+</dict>
+</plist>

ios/Flutter/Debug.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

ios/Flutter/Release.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,620 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		331C808B294A63AB00263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C807B294A618700263BE5 /* RunnerTests.swift */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		7884E8682EC3CC0700C636F2 /* SceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7884E8672EC3CC0400C636F2 /* SceneDelegate.swift */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C8085294A63A400263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 97C146E61CF9000F007C117D /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 97C146ED1CF9000F007C117D;
+			remoteInfo = Runner;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
+		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
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+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		97C147061CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.myApp;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.myApp;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		331C8087294A63A400263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C8088294A63A400263BE5 /* Debug */,
+				331C8089294A63A400263BE5 /* Release */,
+				331C808A294A63A400263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      enableGPUValidationMode = "1"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner/AppDelegate.swift

@@ -0,0 +1,16 @@
+import Flutter
+import UIKit
+
+@main
+@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+
+  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
+    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
+  }
+}

ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

ios/Runner/Base.lproj/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

ios/Runner/Info.plist

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>My App</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>my_app</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneClassName</key>
+					<string>UIWindowScene</string>
+					<key>UISceneConfigurationName</key>
+					<string>flutter</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

ios/Runner/Runner-Bridging-Header.h

@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"

ios/Runner/SceneDelegate.swift

@@ -0,0 +1,6 @@
+import Flutter
+import UIKit
+
+class SceneDelegate: FlutterSceneDelegate {
+
+}

ios/RunnerTests/RunnerTests.swift

@@ -0,0 +1,12 @@
+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

lib/db/database_helper.dart

@@ -0,0 +1,179 @@
+import 'package:sqflite/sqflite.dart';
+import 'package:path/path.dart';
+import '../models/category_model.dart';
+import '../models/transaction_model.dart';
+
+class DatabaseHelper {
+  static final DatabaseHelper instance = DatabaseHelper._init();
+  static Database? _database;
+
+  DatabaseHelper._init();
+
+  Future<Database> get database async {
+    if (_database != null) return _database!;
+    _database = await _initDB('expense_tracker.db');
+    return _database!;
+  }
+
+  Future<Database> _initDB(String filePath) async {
+    final dbPath = await getDatabasesPath();
+    final path = join(dbPath, filePath);
+
+    return await openDatabase(
+      path, 
+      version: 2, 
+      onCreate: _createDB,
+      onUpgrade: _upgradeDB,
+    );
+  }
+
+  Future _createDB(Database db, int version) async {
+    const idType = 'INTEGER PRIMARY KEY AUTOINCREMENT';
+    const textType = 'TEXT NOT NULL';
+    const realType = 'REAL NOT NULL';
+    const intType = 'INTEGER NOT NULL';
+    const intNullableType = 'INTEGER';
+
+    // Create Categories Table
+    await db.execute('''
+CREATE TABLE categories (
+  id $idType,
+  name $textType,
+  type $textType,
+  icon $textType,
+  color $intType,
+  parentId $intNullableType
+)
+''');
+
+    // Create Transactions Table
+    await db.execute('''
+CREATE TABLE transactions (
+  id TEXT PRIMARY KEY,
+  amount $realType,
+  type $textType,
+  categoryId $intType,
+  date $intType,
+  note TEXT,
+  createdAt $intType,
+  updatedAt $intType,
+  FOREIGN KEY (categoryId) REFERENCES categories (id)
+)
+''');
+
+    // Insert Default Categories
+    await _insertDefaultCategories(db);
+  }
+
+  Future _upgradeDB(Database db, int oldVersion, int newVersion) async {
+    if (oldVersion < 2) {
+      await db.execute('ALTER TABLE categories ADD COLUMN parentId INTEGER');
+    }
+  }
+
+  Future _insertDefaultCategories(Database db) async {
+    // Parent Categories
+    final foodId = await db.insert('categories', Category(name: '餐饮', type: 'expense', icon: 'restaurant', color: 0xFFFF5722).toMap());
+    final transportId = await db.insert('categories', Category(name: '交通', type: 'expense', icon: 'directions_bus', color: 0xFF2196F3).toMap());
+    final shoppingId = await db.insert('categories', Category(name: '购物', type: 'expense', icon: 'shopping_cart', color: 0xFFE91E63).toMap());
+    await db.insert('categories', Category(name: '娱乐', type: 'expense', icon: 'movie', color: 0xFF9C27B0).toMap());
+    await db.insert('categories', Category(name: '医疗', type: 'expense', icon: 'local_hospital', color: 0xFFF44336).toMap());
+    
+    // Income
+    await db.insert('categories', Category(name: '工资', type: 'income', icon: 'attach_money', color: 0xFF4CAF50).toMap());
+    await db.insert('categories', Category(name: '投资', type: 'income', icon: 'trending_up', color: 0xFF009688).toMap());
+
+    // Sub Categories
+    await db.insert('categories', Category(name: '早餐', type: 'expense', icon: 'breakfast_dining', color: 0xFFFF5722, parentId: foodId).toMap());
+    await db.insert('categories', Category(name: '午餐', type: 'expense', icon: 'lunch_dining', color: 0xFFFF5722, parentId: foodId).toMap());
+    await db.insert('categories', Category(name: '晚餐', type: 'expense', icon: 'dinner_dining', color: 0xFFFF5722, parentId: foodId).toMap());
+    
+    await db.insert('categories', Category(name: '地铁', type: 'expense', icon: 'subway', color: 0xFF2196F3, parentId: transportId).toMap());
+    await db.insert('categories', Category(name: '打车', type: 'expense', icon: 'local_taxi', color: 0xFF2196F3, parentId: transportId).toMap());
+    
+    await db.insert('categories', Category(name: '衣服', type: 'expense', icon: 'checkroom', color: 0xFFE91E63, parentId: shoppingId).toMap());
+    await db.insert('categories', Category(name: '数码', type: 'expense', icon: 'devices', color: 0xFFE91E63, parentId: shoppingId).toMap());
+  }
+
+  // Transactions CRUD
+  Future<void> createTransaction(TransactionModel transaction) async {
+    final db = await instance.database;
+    await db.insert('transactions', transaction.toMap());
+  }
+
+  Future<TransactionModel> readTransaction(String id) async {
+    final db = await instance.database;
+    final maps = await db.query(
+      'transactions',
+      columns: null,
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+
+    if (maps.isNotEmpty) {
+      return TransactionModel.fromMap(maps.first);
+    } else {
+      throw Exception('ID $id not found');
+    }
+  }
+
+  Future<List<TransactionModel>> readAllTransactions() async {
+    final db = await instance.database;
+    final orderBy = 'date DESC';
+    final result = await db.query('transactions', orderBy: orderBy);
+
+    return result.map((json) => TransactionModel.fromMap(json)).toList();
+  }
+
+  Future<int> updateTransaction(TransactionModel transaction) async {
+    final db = await instance.database;
+    return db.update(
+      'transactions',
+      transaction.toMap(),
+      where: 'id = ?',
+      whereArgs: [transaction.id],
+    );
+  }
+
+  Future<int> deleteTransaction(String id) async {
+    final db = await instance.database;
+    return await db.delete(
+      'transactions',
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  }
+
+  // Categories CRUD
+  Future<List<Category>> readAllCategories() async {
+    final db = await instance.database;
+    final result = await db.query('categories');
+    return result.map((json) => Category.fromMap(json)).toList();
+  }
+  
+  Future<int> createCategory(Category category) async {
+    final db = await instance.database;
+    return await db.insert('categories', category.toMap());
+  }
+
+  Future<int> updateCategory(Category category) async {
+    final db = await instance.database;
+    return await db.update(
+      'categories',
+      category.toMap(),
+      where: 'id = ?',
+      whereArgs: [category.id],
+    );
+  }
+
+  Future<int> deleteCategory(int id) async {
+    final db = await instance.database;
+    // Check if it has children, if so, maybe update them or delete them?
+    // For simplicity, we won't cascade delete here but UI should warn.
+    return await db.delete(
+      'categories',
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  }
+}

lib/main.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'providers/expense_provider.dart';
+import 'screens/home_screen.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (_) => ExpenseProvider()..loadData()),
+      ],
+      child: MaterialApp(
+        title: 'Expense Tracker',
+        theme: ThemeData(
+          colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+          useMaterial3: true,
+        ),
+        home: const HomeScreen(),
+      ),
+    );
+  }
+}

lib/models/category_model.dart

@@ -0,0 +1,39 @@
+class Category {
+  final int? id;
+  final String name;
+  final String type; // 'income' or 'expense'
+  final String icon;
+  final int color;
+  final int? parentId; // 支持多级分类
+
+  Category({
+    this.id,
+    required this.name,
+    required this.type,
+    required this.icon,
+    required this.color,
+    this.parentId,
+  });
+
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'name': name,
+      'type': type,
+      'icon': icon,
+      'color': color,
+      'parentId': parentId,
+    };
+  }
+
+  factory Category.fromMap(Map<String, dynamic> map) {
+    return Category(
+      id: map['id'],
+      name: map['name'],
+      type: map['type'],
+      icon: map['icon'],
+      color: map['color'],
+      parentId: map['parentId'],
+    );
+  }
+}

lib/models/transaction_model.dart

@@ -0,0 +1,47 @@
+class TransactionModel {
+  final String id;
+  final double amount;
+  final String type; // 'income' or 'expense'
+  final int categoryId;
+  final DateTime date;
+  final String? note;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  TransactionModel({
+    required this.id,
+    required this.amount,
+    required this.type,
+    required this.categoryId,
+    required this.date,
+    this.note,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'amount': amount,
+      'type': type,
+      'categoryId': categoryId,
+      'date': date.millisecondsSinceEpoch,
+      'note': note,
+      'createdAt': createdAt.millisecondsSinceEpoch,
+      'updatedAt': updatedAt.millisecondsSinceEpoch,
+    };
+  }
+
+  factory TransactionModel.fromMap(Map<String, dynamic> map) {
+    return TransactionModel(
+      id: map['id'],
+      amount: map['amount'],
+      type: map['type'],
+      categoryId: map['categoryId'],
+      date: DateTime.fromMillisecondsSinceEpoch(map['date']),
+      note: map['note'],
+      createdAt: DateTime.fromMillisecondsSinceEpoch(map['createdAt']),
+      updatedAt: DateTime.fromMillisecondsSinceEpoch(map['updatedAt']),
+    );
+  }
+}

lib/providers/expense_provider.dart

@@ -0,0 +1,123 @@
+import 'package:flutter/material.dart';
+import '../models/category_model.dart';
+import '../models/transaction_model.dart';
+import '../db/database_helper.dart';
+import '../utils/logger.dart';
+
+class ExpenseProvider with ChangeNotifier {
+  List<TransactionModel> _transactions = [];
+  List<Category> _categories = [];
+  bool _isLoading = false;
+
+  List<TransactionModel> get transactions => _transactions;
+  List<Category> get categories => _categories;
+  bool get isLoading => _isLoading;
+
+  Future<void> loadData() async {
+    _isLoading = true;
+    notifyListeners();
+
+    try {
+      _categories = await DatabaseHelper.instance.readAllCategories();
+      _transactions = await DatabaseHelper.instance.readAllTransactions();
+      Logger.log('Data loaded successfully: ${_transactions.length} transactions, ${_categories.length} categories');
+    } catch (e, stack) {
+      Logger.error('Failed to load data', error: e, stackTrace: stack);
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  Future<void> addTransaction(TransactionModel transaction) async {
+    try {
+      await DatabaseHelper.instance.createTransaction(transaction);
+      _transactions.insert(0, transaction); // Insert at the beginning
+      Logger.log('Transaction added: ${transaction.id}');
+      notifyListeners();
+    } catch (e, stack) {
+      Logger.error('Failed to add transaction', error: e, stackTrace: stack);
+      rethrow;
+    }
+  }
+
+  Future<void> deleteTransaction(String id) async {
+    try {
+      await DatabaseHelper.instance.deleteTransaction(id);
+      _transactions.removeWhere((t) => t.id == id);
+      Logger.log('Transaction deleted: $id');
+      notifyListeners();
+    } catch (e, stack) {
+      Logger.error('Failed to delete transaction', error: e, stackTrace: stack);
+      rethrow;
+    }
+  }
+
+  // Category Management
+  Future<void> addCategory(Category category) async {
+    try {
+      await DatabaseHelper.instance.createCategory(category);
+      Logger.log('Category added: ${category.name}');
+      await loadCategories();
+    } catch (e, stack) {
+      Logger.error('Failed to add category', error: e, stackTrace: stack);
+      rethrow;
+    }
+  }
+
+  Future<void> updateCategory(Category category) async {
+    try {
+      await DatabaseHelper.instance.updateCategory(category);
+      Logger.log('Category updated: ${category.id}');
+      await loadCategories();
+    } catch (e, stack) {
+      Logger.error('Failed to update category', error: e, stackTrace: stack);
+      rethrow;
+    }
+  }
+
+  Future<void> deleteCategory(int id) async {
+    try {
+      await DatabaseHelper.instance.deleteCategory(id);
+      Logger.log('Category deleted: $id');
+      await loadCategories();
+    } catch (e, stack) {
+      Logger.error('Failed to delete category', error: e, stackTrace: stack);
+      rethrow;
+    }
+  }
+
+  Future<void> loadCategories() async {
+    try {
+      _categories = await DatabaseHelper.instance.readAllCategories();
+      notifyListeners();
+    } catch (e, stack) {
+      Logger.error('Failed to load categories', error: e, stackTrace: stack);
+    }
+  }
+
+  Category getCategoryById(int id) {
+    return _categories.firstWhere((c) => c.id == id, orElse: () => Category(name: '未知', type: 'expense', icon: 'help', color: 0xFF9E9E9E));
+  }
+  
+  double get totalIncome {
+    return _transactions
+        .where((t) => t.type == 'income')
+        .fold(0.0, (sum, item) => sum + item.amount);
+  }
+
+  double get totalExpense {
+    return _transactions
+        .where((t) => t.type == 'expense')
+        .fold(0.0, (sum, item) => sum + item.amount);
+  }
+
+  // Helper to get hierarchical categories
+  List<Category> get rootCategories {
+    return _categories.where((c) => c.parentId == null).toList();
+  }
+
+  List<Category> getSubCategories(int parentId) {
+    return _categories.where((c) => c.parentId == parentId).toList();
+  }
+}

lib/screens/add_transaction_screen.dart

@@ -0,0 +1,228 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:intl/intl.dart';
+import 'package:uuid/uuid.dart';
+import '../models/transaction_model.dart';
+import '../providers/expense_provider.dart';
+
+class AddTransactionScreen extends StatefulWidget {
+  const AddTransactionScreen({super.key});
+
+  @override
+  State<AddTransactionScreen> createState() => _AddTransactionScreenState();
+}
+
+class _AddTransactionScreenState extends State<AddTransactionScreen> {
+  final _formKey = GlobalKey<FormState>();
+  final _amountController = TextEditingController();
+  final _noteController = TextEditingController();
+  DateTime _selectedDate = DateTime.now();
+  String _transactionType = 'expense';
+  int? _selectedCategoryId;
+
+  @override
+  Widget build(BuildContext context) {
+    final provider = Provider.of<ExpenseProvider>(context);
+    
+    // Flatten categories with hierarchy logic for display
+    final List<DropdownMenuItem<int>> categoryItems = [];
+    final rootCategories = provider.rootCategories.where((c) => c.type == _transactionType).toList();
+
+    for (var root in rootCategories) {
+      // Add Root
+      categoryItems.add(
+        DropdownMenuItem<int>(
+          value: root.id,
+          child: Row(
+            children: [
+              Icon(_getIconData(root.icon), color: Color(root.color), size: 20),
+              const SizedBox(width: 8),
+              Text(root.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+            ],
+          ),
+        ),
+      );
+
+      // Add Children
+      final children = provider.getSubCategories(root.id!);
+      for (var child in children) {
+         categoryItems.add(
+          DropdownMenuItem<int>(
+            value: child.id,
+            child: Row(
+              children: [
+                const SizedBox(width: 24), // Indent
+                Icon(_getIconData(child.icon), color: Color(child.color), size: 16),
+                const SizedBox(width: 8),
+                Text(child.name),
+              ],
+            ),
+          ),
+        );
+      }
+    }
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('记一笔'),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Form(
+          key: _formKey,
+          child: ListView(
+            children: [
+              // Type Selection
+              RadioGroup<String>(
+                groupValue: _transactionType,
+                onChanged: (value) {
+                  setState(() {
+                    _transactionType = value!;
+                    _selectedCategoryId = null;
+                  });
+                },
+                child: Row(
+                  children: [
+                    Expanded(
+                      child: RadioListTile<String>(
+                        title: const Text('支出'),
+                        value: 'expense',
+                      ),
+                    ),
+                    Expanded(
+                      child: RadioListTile<String>(
+                        title: const Text('收入'),
+                        value: 'income',
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              
+              // Amount
+              TextFormField(
+                controller: _amountController,
+                keyboardType: TextInputType.number,
+                decoration: const InputDecoration(
+                  labelText: '金额',
+                  prefixText: '¥ ',
+                ),
+                validator: (value) {
+                  if (value == null || value.isEmpty) {
+                    return '请输入金额';
+                  }
+                  if (double.tryParse(value) == null) {
+                    return '请输入有效的数字';
+                  }
+                  return null;
+                },
+              ),
+              
+              const SizedBox(height: 16),
+
+              // Category
+              DropdownButtonFormField<int>(
+                key: ValueKey(_selectedCategoryId),
+                initialValue: _selectedCategoryId,
+                decoration: const InputDecoration(labelText: '分类'),
+                items: categoryItems,
+                onChanged: (value) {
+                  setState(() {
+                    _selectedCategoryId = value;
+                  });
+                },
+                validator: (value) {
+                  if (value == null) {
+                    return '请选择分类';
+                  }
+                  return null;
+                },
+              ),
+
+              const SizedBox(height: 16),
+
+              // Date Picker
+              Row(
+                children: [
+                  Text('日期: ${DateFormat('yyyy-MM-dd').format(_selectedDate)}'),
+                  const Spacer(),
+                  TextButton(
+                    onPressed: () async {
+                      final pickedDate = await showDatePicker(
+                        context: context,
+                        initialDate: _selectedDate,
+                        firstDate: DateTime(2000),
+                        lastDate: DateTime(2100),
+                        helpText: '选择日期',
+                      );
+                      if (pickedDate != null) {
+                        setState(() {
+                          _selectedDate = pickedDate;
+                        });
+                      }
+                    },
+                    child: const Text('选择日期'),
+                  ),
+                ],
+              ),
+
+              const SizedBox(height: 16),
+
+              // Note
+              TextFormField(
+                controller: _noteController,
+                decoration: const InputDecoration(labelText: '备注'),
+              ),
+
+              const SizedBox(height: 32),
+
+              ElevatedButton(
+                onPressed: _saveTransaction,
+                style: ElevatedButton.styleFrom(
+                  minimumSize: const Size(double.infinity, 50),
+                ),
+                child: const Text('保存', style: TextStyle(fontSize: 18)),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  void _saveTransaction() {
+    if (_formKey.currentState!.validate()) {
+      final newTransaction = TransactionModel(
+        id: const Uuid().v4(),
+        amount: double.parse(_amountController.text),
+        type: _transactionType,
+        categoryId: _selectedCategoryId!,
+        date: _selectedDate,
+        note: _noteController.text,
+        createdAt: DateTime.now(),
+        updatedAt: DateTime.now(),
+      );
+
+      Provider.of<ExpenseProvider>(context, listen: false).addTransaction(newTransaction);
+      Navigator.of(context).pop();
+    }
+  }
+
+  IconData _getIconData(String iconName) {
+    switch (iconName) {
+      case 'restaurant': return Icons.restaurant;
+      case 'directions_bus': return Icons.directions_bus;
+      case 'shopping_cart': return Icons.shopping_cart;
+      case 'movie': return Icons.movie;
+      case 'local_hospital': return Icons.local_hospital;
+      case 'attach_money': return Icons.attach_money;
+      case 'trending_up': return Icons.trending_up;
+      case 'breakfast_dining': return Icons.breakfast_dining;
+      case 'lunch_dining': return Icons.lunch_dining;
+      case 'dinner_dining': return Icons.dinner_dining;
+      case 'subway': return Icons.subway;
+      case 'local_taxi': return Icons.local_taxi;
+      default: return Icons.category;
+    }
+  }
+}

lib/screens/category_management_screen.dart

@@ -0,0 +1,234 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../models/category_model.dart';
+import '../providers/expense_provider.dart';
+
+class CategoryManagementScreen extends StatelessWidget {
+  const CategoryManagementScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('分类管理'),
+      ),
+      body: Consumer<ExpenseProvider>(
+        builder: (context, provider, child) {
+          final rootCategories = provider.rootCategories;
+          return ListView.builder(
+            itemCount: rootCategories.length,
+            itemBuilder: (context, index) {
+              return _buildCategoryTile(context, rootCategories[index], provider);
+            },
+          );
+        },
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () => _showAddEditDialog(context, null, null),
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+
+  Widget _buildCategoryTile(BuildContext context, Category category, ExpenseProvider provider) {
+    final subCategories = provider.getSubCategories(category.id!);
+    
+    if (subCategories.isEmpty) {
+      return ListTile(
+        leading: CircleAvatar(
+          backgroundColor: Color(category.color),
+          child: Icon(_getIconData(category.icon), color: Colors.white, size: 20),
+        ),
+        title: Text(category.name),
+        trailing: _buildActionButtons(context, category),
+      );
+    }
+
+    return ExpansionTile(
+      leading: CircleAvatar(
+        backgroundColor: Color(category.color),
+        child: Icon(_getIconData(category.icon), color: Colors.white, size: 20),
+      ),
+      title: Text(category.name),
+      trailing: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+           // This trailing overrides the expansion arrow, so maybe we put actions in leading or long press?
+           // ExpansionTile doesn't easily support custom trailing + expansion arrow. 
+           // Let's use PopupMenuButton for actions instead.
+           _buildActionButtons(context, category),
+           const Icon(Icons.expand_more), // Visual cue, though functionality is tricky if trailing is used
+        ],
+      ),
+      children: subCategories.map((sub) => _buildCategoryTile(context, sub, provider)).toList(),
+    );
+  }
+
+  // Adjusted to use PopupMenu for cleaner UI on tiles
+  Widget _buildActionButtons(BuildContext context, Category category) {
+    return PopupMenuButton<String>(
+      onSelected: (value) {
+        if (value == 'edit') {
+          _showAddEditDialog(context, category, category.parentId);
+        } else if (value == 'delete') {
+          _confirmDelete(context, category);
+        } else if (value == 'add_sub') {
+          _showAddEditDialog(context, null, category.id);
+        }
+      },
+      itemBuilder: (BuildContext context) => <PopupMenuEntry<String>>[
+        const PopupMenuItem<String>(
+          value: 'edit',
+          child: Text('编辑'),
+        ),
+        const PopupMenuItem<String>(
+          value: 'add_sub',
+          child: Text('添加子分类'),
+        ),
+        const PopupMenuItem<String>(
+          value: 'delete',
+          child: Text('删除', style: TextStyle(color: Colors.red)),
+        ),
+      ],
+    );
+  }
+
+  void _confirmDelete(BuildContext context, Category category) {
+    showDialog(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('确认删除'),
+        content: Text('确定要删除分类 "${category.name}" 吗？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(),
+            child: const Text('取消'),
+          ),
+          TextButton(
+            onPressed: () {
+              Provider.of<ExpenseProvider>(context, listen: false).deleteCategory(category.id!);
+              Navigator.of(ctx).pop();
+            },
+            child: const Text('删除', style: TextStyle(color: Colors.red)),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _showAddEditDialog(BuildContext context, Category? category, int? parentId) {
+    final isEditing = category != null;
+    final nameController = TextEditingController(text: isEditing ? category.name : '');
+    String selectedType = isEditing ? category.type : 'expense';
+    String selectedIcon = isEditing ? category.icon : 'category';
+    int selectedColor = isEditing ? category.color : 0xFF2196F3;
+
+    showDialog(
+      context: context,
+      builder: (ctx) {
+        return StatefulBuilder(
+          builder: (context, setState) {
+            return AlertDialog(
+              title: Text(isEditing ? '编辑分类' : '添加分类'),
+              content: SingleChildScrollView(
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    TextField(
+                      controller: nameController,
+                      decoration: const InputDecoration(labelText: '分类名称'),
+                    ),
+                    const SizedBox(height: 16),
+                    DropdownButtonFormField<String>(
+                      key: ValueKey(selectedType),
+                      initialValue: selectedType,
+                      items: const [
+                        DropdownMenuItem(value: 'expense', child: Text('支出')),
+                        DropdownMenuItem(value: 'income', child: Text('收入')),
+                      ],
+                      onChanged: (val) {
+                        setState(() => selectedType = val!);
+                      },
+                      decoration: const InputDecoration(labelText: '类型'),
+                    ),
+                    const SizedBox(height: 16),
+                    // Icon Picker (Simple version)
+                    DropdownButtonFormField<String>(
+                      key: ValueKey(selectedIcon),
+                      initialValue: selectedIcon,
+                      items: const [
+                        DropdownMenuItem(value: 'restaurant', child: Icon(Icons.restaurant)),
+                        DropdownMenuItem(value: 'directions_bus', child: Icon(Icons.directions_bus)),
+                        DropdownMenuItem(value: 'shopping_cart', child: Icon(Icons.shopping_cart)),
+                        DropdownMenuItem(value: 'movie', child: Icon(Icons.movie)),
+                        DropdownMenuItem(value: 'local_hospital', child: Icon(Icons.local_hospital)),
+                        DropdownMenuItem(value: 'attach_money', child: Icon(Icons.attach_money)),
+                        DropdownMenuItem(value: 'trending_up', child: Icon(Icons.trending_up)),
+                        DropdownMenuItem(value: 'category', child: Icon(Icons.category)),
+                        DropdownMenuItem(value: 'breakfast_dining', child: Icon(Icons.breakfast_dining)),
+                        DropdownMenuItem(value: 'lunch_dining', child: Icon(Icons.lunch_dining)),
+                        DropdownMenuItem(value: 'dinner_dining', child: Icon(Icons.dinner_dining)),
+                        DropdownMenuItem(value: 'subway', child: Icon(Icons.subway)),
+                        DropdownMenuItem(value: 'local_taxi', child: Icon(Icons.local_taxi)),
+                      ],
+                      onChanged: (val) {
+                         setState(() => selectedIcon = val!);
+                      },
+                      decoration: const InputDecoration(labelText: '图标'),
+                    ),
+                  ],
+                ),
+              ),
+              actions: [
+                TextButton(
+                  onPressed: () => Navigator.of(ctx).pop(),
+                  child: const Text('取消'),
+                ),
+                ElevatedButton(
+                  onPressed: () {
+                    if (nameController.text.isEmpty) return;
+                    
+                    final newCategory = Category(
+                      id: category?.id,
+                      name: nameController.text,
+                      type: selectedType,
+                      icon: selectedIcon,
+                      color: selectedColor, // Fixed color for now or add picker
+                      parentId: parentId,
+                    );
+
+                    if (isEditing) {
+                      Provider.of<ExpenseProvider>(context, listen: false).updateCategory(newCategory);
+                    } else {
+                      Provider.of<ExpenseProvider>(context, listen: false).addCategory(newCategory);
+                    }
+                    Navigator.of(ctx).pop();
+                  },
+                  child: const Text('保存'),
+                ),
+              ],
+            );
+          },
+        );
+      },
+    );
+  }
+
+  IconData _getIconData(String iconName) {
+    switch (iconName) {
+      case 'restaurant': return Icons.restaurant;
+      case 'directions_bus': return Icons.directions_bus;
+      case 'shopping_cart': return Icons.shopping_cart;
+      case 'movie': return Icons.movie;
+      case 'local_hospital': return Icons.local_hospital;
+      case 'attach_money': return Icons.attach_money;
+      case 'trending_up': return Icons.trending_up;
+      case 'breakfast_dining': return Icons.breakfast_dining;
+      case 'lunch_dining': return Icons.lunch_dining;
+      case 'dinner_dining': return Icons.dinner_dining;
+      case 'subway': return Icons.subway;
+      case 'local_taxi': return Icons.local_taxi;
+      default: return Icons.category;
+    }
+  }
+}

lib/screens/home_screen.dart

@@ -0,0 +1,243 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:intl/intl.dart';
+import '../providers/expense_provider.dart';
+import 'add_transaction_screen.dart';
+import 'stats_screen.dart';
+import 'category_management_screen.dart';
+
+class HomeScreen extends StatelessWidget {
+  const HomeScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('我的记账本'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.bar_chart),
+            tooltip: '统计',
+            onPressed: () {
+              Navigator.of(context).push(
+                MaterialPageRoute(builder: (context) => const StatsScreen()),
+              );
+            },
+          ),
+        ],
+      ),
+      drawer: Drawer(
+        child: ListView(
+          padding: EdgeInsets.zero,
+          children: [
+            const UserAccountsDrawerHeader(
+              accountName: Text('用户'),
+              accountEmail: Text('本地用户'),
+              currentAccountPicture: CircleAvatar(
+                backgroundColor: Colors.white,
+                child: Icon(Icons.person, color: Colors.deepPurple),
+              ),
+              decoration: BoxDecoration(
+                color: Colors.deepPurple,
+              ),
+            ),
+            ListTile(
+              leading: const Icon(Icons.category),
+              title: const Text('分类管理'),
+              onTap: () {
+                Navigator.pop(context); // Close drawer
+                Navigator.of(context).push(
+                  MaterialPageRoute(builder: (context) => const CategoryManagementScreen()),
+                );
+              },
+            ),
+            ListTile(
+              leading: const Icon(Icons.settings),
+              title: const Text('设置'),
+              onTap: () {
+                Navigator.pop(context);
+                ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('设置功能开发中...')));
+              },
+            ),
+          ],
+        ),
+      ),
+      body: Consumer<ExpenseProvider>(
+        builder: (context, provider, child) {
+          if (provider.isLoading) {
+            return const Center(child: CircularProgressIndicator());
+          }
+
+          if (provider.transactions.isEmpty) {
+            return const Center(
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Icon(Icons.receipt_long, size: 64, color: Colors.grey),
+                  SizedBox(height: 16),
+                  Text('暂无账单，快去记一笔吧！', style: TextStyle(color: Colors.grey)),
+                ],
+              ),
+            );
+          }
+
+          return Column(
+            children: [
+              _buildSummaryCard(provider),
+              Expanded(
+                child: ListView.builder(
+                  itemCount: provider.transactions.length,
+                  itemBuilder: (context, index) {
+                    final transaction = provider.transactions[index];
+                    final category = provider.getCategoryById(transaction.categoryId);
+                    
+                    return Dismissible(
+                      key: Key(transaction.id),
+                      background: Container(
+                        color: Colors.red,
+                        alignment: Alignment.centerRight,
+                        padding: const EdgeInsets.only(right: 20),
+                        child: const Icon(Icons.delete, color: Colors.white),
+                      ),
+                      direction: DismissDirection.endToStart,
+                      confirmDismiss: (direction) async {
+                        return await showDialog(
+                          context: context,
+                          builder: (ctx) => AlertDialog(
+                            title: const Text('确认删除'),
+                            content: const Text('确定要删除这条记录吗？'),
+                            actions: [
+                              TextButton(onPressed: () => Navigator.of(ctx).pop(false), child: const Text('取消')),
+                              TextButton(onPressed: () => Navigator.of(ctx).pop(true), child: const Text('删除', style: TextStyle(color: Colors.red))),
+                            ],
+                          ),
+                        );
+                      },
+                      onDismissed: (direction) {
+                        provider.deleteTransaction(transaction.id);
+                        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已删除')));
+                      },
+                      child: Card(
+                        margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+                        child: ListTile(
+                          leading: CircleAvatar(
+                            backgroundColor: Color(category.color),
+                            child: Icon(_getIconData(category.icon), color: Colors.white),
+                          ),
+                          title: Text(category.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+                          subtitle: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              Text(DateFormat('yyyy-MM-dd HH:mm').format(transaction.date)),
+                              if (transaction.note != null && transaction.note!.isNotEmpty)
+                                Text(transaction.note!, style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                            ],
+                          ),
+                          trailing: Text(
+                            '${transaction.type == 'income' ? '+' : '-'}${transaction.amount.toStringAsFixed(2)}',
+                            style: TextStyle(
+                              color: transaction.type == 'income' ? Colors.green : Colors.red,
+                              fontWeight: FontWeight.bold,
+                              fontSize: 16,
+                            ),
+                          ),
+                        ),
+                      ),
+                    );
+                  },
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () {
+          Navigator.of(context).push(
+            MaterialPageRoute(builder: (context) => const AddTransactionScreen()),
+          );
+        },
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+
+  Widget _buildSummaryCard(ExpenseProvider provider) {
+    return Card(
+      margin: const EdgeInsets.all(16),
+      elevation: 4,
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+      child: Container(
+        decoration: BoxDecoration(
+          borderRadius: BorderRadius.circular(16),
+          gradient: LinearGradient(
+            colors: [Colors.deepPurple.shade400, Colors.deepPurple.shade700],
+            begin: Alignment.topLeft,
+            end: Alignment.bottomRight,
+          ),
+        ),
+        padding: const EdgeInsets.all(20),
+        child: Column(
+          children: [
+            const Text('本月结余', style: TextStyle(color: Colors.white70, fontSize: 14)),
+            const SizedBox(height: 8),
+            Text(
+              '¥${(provider.totalIncome - provider.totalExpense).toStringAsFixed(2)}',
+              style: const TextStyle(color: Colors.white, fontSize: 32, fontWeight: FontWeight.bold),
+            ),
+            const SizedBox(height: 20),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      children: [
+                        const Icon(Icons.arrow_downward, color: Colors.greenAccent, size: 16),
+                        const SizedBox(width: 4),
+                        const Text('收入', style: TextStyle(color: Colors.white70)),
+                      ],
+                    ),
+                    Text('¥${provider.totalIncome.toStringAsFixed(2)}', style: const TextStyle(color: Colors.white, fontSize: 18, fontWeight: FontWeight.bold)),
+                  ],
+                ),
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.end,
+                  children: [
+                    Row(
+                      children: [
+                        const Icon(Icons.arrow_upward, color: Colors.redAccent, size: 16),
+                        const SizedBox(width: 4),
+                        const Text('支出', style: TextStyle(color: Colors.white70)),
+                      ],
+                    ),
+                    Text('¥${provider.totalExpense.toStringAsFixed(2)}', style: const TextStyle(color: Colors.white, fontSize: 18, fontWeight: FontWeight.bold)),
+                  ],
+                ),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  IconData _getIconData(String iconName) {
+    switch (iconName) {
+      case 'restaurant': return Icons.restaurant;
+      case 'directions_bus': return Icons.directions_bus;
+      case 'shopping_cart': return Icons.shopping_cart;
+      case 'movie': return Icons.movie;
+      case 'local_hospital': return Icons.local_hospital;
+      case 'attach_money': return Icons.attach_money;
+      case 'trending_up': return Icons.trending_up;
+      case 'breakfast_dining': return Icons.breakfast_dining;
+      case 'lunch_dining': return Icons.lunch_dining;
+      case 'dinner_dining': return Icons.dinner_dining;
+      case 'subway': return Icons.subway;
+      case 'local_taxi': return Icons.local_taxi;
+      default: return Icons.category;
+    }
+  }
+}

lib/screens/stats_screen.dart

@@ -0,0 +1,282 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:fl_chart/fl_chart.dart';
+import 'package:intl/intl.dart';
+import '../providers/expense_provider.dart';
+import '../models/transaction_model.dart';
+
+class StatsScreen extends StatefulWidget {
+  const StatsScreen({super.key});
+
+  @override
+  State<StatsScreen> createState() => _StatsScreenState();
+}
+
+class _StatsScreenState extends State<StatsScreen> with SingleTickerProviderStateMixin {
+  late TabController _tabController;
+  DateTime _selectedMonth = DateTime.now();
+
+  @override
+  void initState() {
+    super.initState();
+    _tabController = TabController(length: 3, vsync: this);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('数据统计'),
+        bottom: TabBar(
+          controller: _tabController,
+          tabs: const [
+            Tab(text: '概览'),
+            Tab(text: '趋势'),
+            Tab(text: '对比'),
+          ],
+        ),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.calendar_month),
+            onPressed: _pickMonth,
+          ),
+        ],
+      ),
+      body: Consumer<ExpenseProvider>(
+        builder: (context, provider, child) {
+          final transactions = provider.transactions.where((t) {
+            return t.date.year == _selectedMonth.year && t.date.month == _selectedMonth.month;
+          }).toList();
+
+          if (transactions.isEmpty) {
+             return Center(child: Text('${DateFormat('yyyy年MM月').format(_selectedMonth)} 无数据'));
+          }
+
+          return TabBarView(
+            controller: _tabController,
+            children: [
+              _buildPieChart(provider, transactions),
+              _buildLineChart(provider, transactions),
+              _buildBarChart(provider, transactions),
+            ],
+          );
+        },
+      ),
+    );
+  }
+
+  Future<void> _pickMonth() async {
+    final picked = await showDatePicker(
+      context: context,
+      initialDate: _selectedMonth,
+      firstDate: DateTime(2020),
+      lastDate: DateTime(2030),
+      helpText: '选择月份',
+    );
+    if (picked != null) {
+      setState(() {
+        _selectedMonth = picked;
+      });
+    }
+  }
+
+  Widget _buildPieChart(ExpenseProvider provider, List<TransactionModel> transactions) {
+    final expenseTransactions = transactions.where((t) => t.type == 'expense').toList();
+    if (expenseTransactions.isEmpty) return const Center(child: Text('无支出数据'));
+
+    final categoryTotals = <int, double>{};
+    for (var t in expenseTransactions) {
+      categoryTotals[t.categoryId] = (categoryTotals[t.categoryId] ?? 0) + t.amount;
+    }
+
+    final totalExpense = expenseTransactions.fold(0.0, (sum, t) => sum + t.amount);
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        children: [
+          Text('总支出: ¥${totalExpense.toStringAsFixed(2)}', style: const TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          const SizedBox(height: 32),
+          SizedBox(
+            height: 250,
+            child: PieChart(
+              PieChartData(
+                sections: categoryTotals.entries.map((entry) {
+                  final category = provider.getCategoryById(entry.key);
+                  final percentage = (entry.value / totalExpense) * 100;
+                  
+                  return PieChartSectionData(
+                    color: Color(category.color),
+                    value: entry.value,
+                    title: '${percentage.toStringAsFixed(1)}%',
+                    radius: 50,
+                    titleStyle: const TextStyle(
+                      fontSize: 12,
+                      fontWeight: FontWeight.bold,
+                      color: Colors.white,
+                    ),
+                  );
+                }).toList(),
+                sectionsSpace: 2,
+                centerSpaceRadius: 40,
+              ),
+            ),
+          ),
+          const SizedBox(height: 20),
+          Expanded(
+            child: ListView.builder(
+              itemCount: categoryTotals.length,
+              itemBuilder: (context, index) {
+                final categoryId = categoryTotals.keys.elementAt(index);
+                final amount = categoryTotals[categoryId]!;
+                final category = provider.getCategoryById(categoryId);
+                
+                return ListTile(
+                  leading: CircleAvatar(
+                    backgroundColor: Color(category.color),
+                    child: Icon(_getIconData(category.icon), color: Colors.white),
+                  ),
+                  title: Text(category.name),
+                  trailing: Text('¥${amount.toStringAsFixed(2)}'),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildLineChart(ExpenseProvider provider, List<TransactionModel> transactions) {
+    // Daily Expense Trend
+    final dailyTotals = <int, double>{};
+    final daysInMonth = DateUtils.getDaysInMonth(_selectedMonth.year, _selectedMonth.month);
+    
+    // Initialize all days to 0
+    for (int i = 1; i <= daysInMonth; i++) {
+      dailyTotals[i] = 0.0;
+    }
+
+    for (var t in transactions.where((t) => t.type == 'expense')) {
+      dailyTotals[t.date.day] = (dailyTotals[t.date.day] ?? 0) + t.amount;
+    }
+
+    final spots = dailyTotals.entries
+      .map((e) => FlSpot(e.key.toDouble(), e.value))
+      .toList()
+      ..sort((a, b) => a.x.compareTo(b.x));
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        children: [
+          const Text('每日支出趋势', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
+          const SizedBox(height: 32),
+          Expanded(
+            child: LineChart(
+              LineChartData(
+                gridData: const FlGridData(show: false),
+                titlesData: FlTitlesData(
+                  bottomTitles: AxisTitles(
+                    sideTitles: SideTitles(
+                      showTitles: true,
+                      interval: 5,
+                      getTitlesWidget: (value, meta) {
+                        return Text('${value.toInt()}日', style: const TextStyle(fontSize: 10));
+                      },
+                    ),
+                  ),
+                  leftTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                  topTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                  rightTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                ),
+                borderData: FlBorderData(show: true, border: Border.all(color: Colors.grey.withValues(alpha: 0.2))),
+                lineBarsData: [
+                  LineChartBarData(
+                    spots: spots,
+                    isCurved: true,
+                    color: Colors.blue,
+                    barWidth: 3,
+                    dotData: const FlDotData(show: false),
+                    belowBarData: BarAreaData(show: true, color: Colors.blue.withValues(alpha: 0.1)),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildBarChart(ExpenseProvider provider, List<TransactionModel> transactions) {
+    final income = transactions.where((t) => t.type == 'income').fold(0.0, (sum, t) => sum + t.amount);
+    final expense = transactions.where((t) => t.type == 'expense').fold(0.0, (sum, t) => sum + t.amount);
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        children: [
+          const Text('收支对比', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
+          const SizedBox(height: 32),
+          Expanded(
+            child: BarChart(
+              BarChartData(
+                alignment: BarChartAlignment.spaceAround,
+                maxY: (income > expense ? income : expense) * 1.2,
+                barTouchData: BarTouchData(enabled: false),
+                titlesData: FlTitlesData(
+                  bottomTitles: AxisTitles(
+                    sideTitles: SideTitles(
+                      showTitles: true,
+                      getTitlesWidget: (value, meta) {
+                        switch (value.toInt()) {
+                          case 0: return const Text('收入', style: TextStyle(color: Colors.green));
+                          case 1: return const Text('支出', style: TextStyle(color: Colors.red));
+                          default: return const Text('');
+                        }
+                      },
+                    ),
+                  ),
+                  leftTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                  topTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                  rightTitles: const AxisTitles(sideTitles: SideTitles(showTitles: false)),
+                ),
+                gridData: const FlGridData(show: false),
+                borderData: FlBorderData(show: false),
+                barGroups: [
+                  BarChartGroupData(
+                    x: 0,
+                    barRods: [BarChartRodData(toY: income, color: Colors.green, width: 20)],
+                  ),
+                  BarChartGroupData(
+                    x: 1,
+                    barRods: [BarChartRodData(toY: expense, color: Colors.red, width: 20)],
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  IconData _getIconData(String iconName) {
+    switch (iconName) {
+      case 'restaurant': return Icons.restaurant;
+      case 'directions_bus': return Icons.directions_bus;
+      case 'shopping_cart': return Icons.shopping_cart;
+      case 'movie': return Icons.movie;
+      case 'local_hospital': return Icons.local_hospital;
+      case 'attach_money': return Icons.attach_money;
+      case 'trending_up': return Icons.trending_up;
+      case 'breakfast_dining': return Icons.breakfast_dining;
+      case 'lunch_dining': return Icons.lunch_dining;
+      case 'dinner_dining': return Icons.dinner_dining;
+      case 'subway': return Icons.subway;
+      case 'local_taxi': return Icons.local_taxi;
+      default: return Icons.category;
+    }
+  }
+}

lib/utils/logger.dart

@@ -0,0 +1,11 @@
+import 'dart:developer' as developer;
+
+class Logger {
+  static void log(String message, {String name = 'App'}) {
+    developer.log(message, name: name);
+  }
+
+  static void error(String message, {Object? error, StackTrace? stackTrace, String name = 'App'}) {
+    developer.log(message, name: name, error: error, stackTrace: stackTrace, level: 1000);
+  }
+}

linux/.gitignore

@@ -0,0 +1 @@
+flutter/ephemeral

linux/CMakeLists.txt

@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "my_app")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.my_app")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()

linux/flutter/CMakeLists.txt

@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)

linux/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}

linux/flutter/generated_plugin_registrant.h

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_

linux/flutter/generated_plugins.cmake

@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

linux/runner/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")

linux/runner/main.cc

@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}

linux/runner/my_application.cc

@@ -0,0 +1,148 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Called when first Flutter frame received.
+static void first_frame_cb(MyApplication* self, FlView* view) {
+  gtk_widget_show(gtk_widget_get_toplevel(GTK_WIDGET(view)));
+}
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "my_app");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "my_app");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(
+      project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  GdkRGBA background_color;
+  // Background defaults to black, override it here if necessary, e.g. #00000000
+  // for transparent.
+  gdk_rgba_parse(&background_color, "#000000");
+  fl_view_set_background_color(view, &background_color);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  // Show the window when Flutter renders.
+  // Requires the view to be realized so we can start rendering.
+  g_signal_connect_swapped(view, "first-frame", G_CALLBACK(first_frame_cb),
+                           self);
+  gtk_widget_realize(GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application,
+                                                  gchar*** arguments,
+                                                  int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+    g_warning("Failed to register: %s", error->message);
+    *exit_status = 1;
+    return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  // MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  // MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line =
+      my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID, "flags",
+                                     G_APPLICATION_NON_UNIQUE, nullptr));
+}

linux/runner/my_application.h

@@ -0,0 +1,21 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication,
+                     my_application,
+                     MY,
+                     APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_

macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,12 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import sqflite_darwin
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
+}

macos/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,705 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXAggregateTarget section */
+		33CC111A2044C6BA0003C045 /* Flutter Assemble */ = {
+			isa = PBXAggregateTarget;
+			buildConfigurationList = 33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */;
+			buildPhases = (
+				33CC111E2044C6BF0003C045 /* ShellScript */,
+			);
+			dependencies = (
+			);
+			name = "Flutter Assemble";
+			productName = FLX;
+		};
+/* End PBXAggregateTarget section */
+
+/* Begin PBXBuildFile section */
+		331C80D8294CF71000263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C80D7294CF71000263BE5 /* RunnerTests.swift */; };
+		335BBD1B22A9A15E00E9071D /* GeneratedPluginRegistrant.swift in Sources */ = {isa = PBXBuildFile; fileRef = 335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */; };
+		33CC10F12044A3C60003C045 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC10F02044A3C60003C045 /* AppDelegate.swift */; };
+		33CC10F32044A3C60003C045 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F22044A3C60003C045 /* Assets.xcassets */; };
+		33CC10F62044A3C60003C045 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F42044A3C60003C045 /* MainMenu.xib */; };
+		33CC11132044BFA00003C045 /* MainFlutterWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC11122044BFA00003C045 /* MainFlutterWindow.swift */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C80D9294CF71000263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC10EC2044A3C60003C045;
+			remoteInfo = Runner;
+		};
+		33CC111F2044C79F0003C045 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC111A2044C6BA0003C045;
+			remoteInfo = FLX;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		33CC110E2044A8840003C045 /* Bundle Framework */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Bundle Framework";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		331C80D5294CF71000263BE5 /* RunnerTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = RunnerTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		331C80D7294CF71000263BE5 /* RunnerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RunnerTests.swift; sourceTree = "<group>"; };
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+				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = macosx;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+			};
+			name = Debug;
+		};
+		33CC10FA2044A3C60003C045 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = macosx;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+			};
+			name = Release;
+		};
+		33CC10FC2044A3C60003C045 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 33E5194F232828860026EE4D /* AppInfo.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/DebugProfile.entitlements;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		33CC10FD2044A3C60003C045 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 33E5194F232828860026EE4D /* AppInfo.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Release.entitlements;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
+		33CC111C2044C6BA0003C045 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Manual;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Debug;
+		};
+		33CC111D2044C6BA0003C045 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		331C80DE294CF71000263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C80DB294CF71000263BE5 /* Debug */,
+				331C80DC294CF71000263BE5 /* Release */,
+				331C80DD294CF71000263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC10E82044A3C60003C045 /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC10F92044A3C60003C045 /* Debug */,
+				33CC10FA2044A3C60003C045 /* Release */,
+				338D0CE9231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC10FB2044A3C60003C045 /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC10FC2044A3C60003C045 /* Debug */,
+				33CC10FD2044A3C60003C045 /* Release */,
+				338D0CEA231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC111C2044C6BA0003C045 /* Debug */,
+				33CC111D2044C6BA0003C045 /* Release */,
+				338D0CEB231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 33CC10E52044A3C60003C045 /* Project object */;
+}

macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+               BuildableName = "my_app.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+            BuildableName = "my_app.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C80D4294CF70F00263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      enableGPUValidationMode = "1"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+            BuildableName = "my_app.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+            BuildableName = "my_app.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

macos/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

macos/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+import Cocoa
+import FlutterMacOS
+
+@main
+class AppDelegate: FlutterAppDelegate {
+  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+    return true
+  }
+
+  override func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
+    return true
+  }
+}

macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,68 @@
+{
+  "images" : [
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_16.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_64.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_128.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_1024.png",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}