factor:布局颜色重构

lib/provider/app_provider.dart

@@ -6,15 +6,17 @@ import 'package:shared_preferences/shared_preferences.dart';
 class AppProvider with ChangeNotifier {
   static const String _themeKey = 'selected_theme';
   static const String _darkModeKey = 'is_dark_mode';
+  static const List<String> appBarTitles = ['闪灵', '待办', '日程', '统计'];
 
-  int _currentTab = 0;
-  bool _isDarkMode = false;
-  ThemeColor _currentTheme = defaultThemes[0];
-  String _appVersion = '1.0.0';
-  String _buildNumber = '1';
+  int currentTab = 0;
+  String currentAppBarTitle = '闪灵';
+  bool isDarkMode = false;
+  ThemeColor currentTheme = defaultThemes[0];
+  String appVersion = '1.0.0';
+  String buildNumber = '1';
 
   late SharedPreferences _prefs;
-  bool _isInitialized = false;
+  bool isInitialized = false;
 
   AppProvider() {
     _initPreferences();
@@ -26,26 +28,26 @@ class AppProvider with ChangeNotifier {
     _loadPreferences();
     await _getVersionInfo();
 
-    _isInitialized = true;
+    isInitialized = true;
     notifyListeners();
   }
 
   // 加载存储的设置
   void _loadPreferences() {
-    _isDarkMode = _prefs.getBool(_darkModeKey) ?? false;
+    isDarkMode = _prefs.getBool(_darkModeKey) ?? false;
 
     // 加载主题色
     final themeName = _prefs.getString(_themeKey);
     if (themeName != null) {
-      _currentTheme = getThemeColor(themeName);
+      currentTheme = getThemeColor(themeName);
     }
   }
 
   Future<void> _getVersionInfo() async {
     try {
       PackageInfo packageInfo = await PackageInfo.fromPlatform();
-      _appVersion = packageInfo.version;
-      _buildNumber = packageInfo.buildNumber;
+      appVersion = packageInfo.version;
+      buildNumber = packageInfo.buildNumber;
       notifyListeners();
     } catch (e) {
       print('获取版本信息失败: $e');
@@ -54,51 +56,44 @@ class AppProvider with ChangeNotifier {
 
   // 保存主题色
   Future<void> _saveTheme() async {
-    await _prefs.setString(_themeKey, _currentTheme.name);
+    await _prefs.setString(_themeKey, currentTheme.name);
   }
 
   // 保存暗黑模式
   Future<void> _saveDarkMode() async {
-    await _prefs.setBool(_darkModeKey, _isDarkMode);
+    await _prefs.setBool(_darkModeKey, isDarkMode);
   }
 
-  int get currentTab => _currentTab;
-
-  bool get isDarkMode => _isDarkMode;
-
-  ThemeColor get currentTheme => _currentTheme;
-
   List<ThemeColor> get availableThemes => defaultThemes;
 
-  bool get isInitialized => _isInitialized;
-
-  String get fullVersion => '$_appVersion+$_buildNumber';
+  String get fullVersion => '$appVersion+$buildNumber';
 
   void changeTab(int index) {
-    _currentTab = index;
+    currentTab = index;
+    currentAppBarTitle = appBarTitles[index];
     notifyListeners();
   }
 
   // 切换明暗模式
   void toggleDarkMode(bool value) {
-    _isDarkMode = value;
+    isDarkMode = value;
     _saveDarkMode();
     notifyListeners();
   }
 
   // 更改主题色
   void changeTheme(ThemeColor theme) {
-    _currentTheme = theme;
+    currentTheme = theme;
     _saveTheme();
     notifyListeners();
   }
 
   ThemeData get currentThemeData {
     return ThemeData(
-      primarySwatch: _currentTheme.materialColor,
+      primarySwatch: currentTheme.materialColor,
       colorScheme: ColorScheme.fromSeed(
-        seedColor: _currentTheme.primaryColor,
-        brightness: _isDarkMode ? Brightness.dark : Brightness.light,
+        seedColor: currentTheme.primaryColor,
+        brightness: isDarkMode ? Brightness.dark : Brightness.light,
       ),
       useMaterial3: true,
       fontFamily: 'CustomFont',