feat(flutter): 重构播放页并增加语言切换

lib/app.dart

@@ -40,6 +40,7 @@ import 'core/data/services/category_controller.dart';
 import 'core/data/services/download_controller.dart';
 import 'core/data/services/favorite_controller.dart';
 import 'core/data/services/interaction_controller.dart';
+import 'core/data/services/locale_controller.dart';
 import 'core/data/services/playback_session.dart';
 import 'core/data/services/video_player_port.dart';
 import 'core/data/services/wallet_controller.dart';
@@ -175,11 +176,14 @@ class _LumaDramaAppState extends State<LumaDramaApp> {
   late final InteractionController _interactionController =
       InteractionController(_interactionRepository);
 
+  late final LocaleController _localeController = LocaleController();
+
   @override
   void initState() {
     super.initState();
     // 恢复本地令牌与设备号；未登录也能正常浏览，不阻塞首屏
     _auth.load();
+    unawaited(_localeController.load());
     // 登录/登出时同步收藏状态：收藏属于账号，不能跨账号串联
     _auth.addListener(_onAuthChanged);
     if (_auth.isSignedIn) unawaited(_favoriteController.load());
@@ -210,6 +214,7 @@ class _LumaDramaAppState extends State<LumaDramaApp> {
     _downloadController.dispose();
     _walletController.dispose();
     _interactionController.dispose();
+    _localeController.dispose();
     _apiClient.close();
     super.dispose();
   }
@@ -242,27 +247,31 @@ class _LumaDramaAppState extends State<LumaDramaApp> {
         ChangeNotifierProvider.value(value: _downloadController),
         ChangeNotifierProvider.value(value: _walletController),
         ChangeNotifierProvider.value(value: _interactionController),
+        ChangeNotifierProvider.value(value: _localeController),
         ChangeNotifierProvider.value(value: _auth),
       ],
-      child: MaterialApp(
-        onGenerateTitle: (context) => AppLocalizations.of(context)!.appName,
-        supportedLocales: AppLocalizations.supportedLocales,
-        localizationsDelegates: AppLocalizations.localizationsDelegates,
-        localeResolutionCallback: (deviceLocale, _) =>
-            resolveAppLocale(deviceLocale),
-        debugShowCheckedModeBanner: false,
-        themeMode: ThemeMode.light,
-        theme: AppTheme.light(),
-        darkTheme: AppTheme.light(),
-        builder: (context, child) => AnnotatedRegion<SystemUiOverlayStyle>(
-          value: SystemUiOverlayStyle.dark.copyWith(
-            statusBarColor: Colors.transparent,
-            systemNavigationBarColor: AppColors.bar,
-            systemNavigationBarIconBrightness: Brightness.dark,
+      child: Consumer<LocaleController>(
+        builder: (context, localeController, _) => MaterialApp(
+          locale: localeController.locale,
+          onGenerateTitle: (context) => AppLocalizations.of(context)!.appName,
+          supportedLocales: AppLocalizations.supportedLocales,
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          localeResolutionCallback: (deviceLocale, _) =>
+              resolveAppLocale(deviceLocale),
+          debugShowCheckedModeBanner: false,
+          themeMode: ThemeMode.light,
+          theme: AppTheme.light(),
+          darkTheme: AppTheme.light(),
+          builder: (context, child) => AnnotatedRegion<SystemUiOverlayStyle>(
+            value: SystemUiOverlayStyle.dark.copyWith(
+              statusBarColor: Colors.transparent,
+              systemNavigationBarColor: AppColors.bar,
+              systemNavigationBarIconBrightness: Brightness.dark,
+            ),
+            child: child ?? const SizedBox.shrink(),
           ),
-          child: child ?? const SizedBox.shrink(),
+          home: const HomePage(),
         ),
-        home: const HomePage(),
       ),
     );
   }