fix #902 language error

Author: [email protected]

lib/app.dart

@@ -48,6 +48,24 @@ class _FlutterReduxAppState extends State<FlutterReduxApp>
 
   NavigatorObserver navigatorObserver = NavigatorObserver();
 
+  // Helper method to check if the locale is supported
+  Locale _checkSupportedLocale(Locale locale) {
+    // Define the supported locales
+    final supportedLocales = GSYLocalizations.localizedValues;
+
+    // Check if the requested locale is supported
+    for (final supportedLocale in supportedLocales.keys) {
+      if (supportedLocale == locale.languageCode) {
+        return locale;
+      }
+    }
+
+    // Fall back to English if the locale is not supported
+    return const Locale('en', 'US');
+  }
+
+
+
   @override
   void initState() {
     super.initState();
@@ -71,6 +89,11 @@ class _FlutterReduxAppState extends State<FlutterReduxApp>
         builder: (BuildContext context, WidgetRef ref, Widget? child) {
           final (greyApp, appLocale, themeData) = ref.watch(appStateProvider);
 
+
+
+          // Make sure the locale is supported or fall back to a default one
+          final effectiveLocale = _checkSupportedLocale(appLocale);
+
           /// 使用 flutter_redux 做部分状态共享
           /// 通过 StoreProvider 应用 store
           /// 这里是为了展示使用 flutter_redux 的能力所以使用了多种状态管理
@@ -87,8 +110,8 @@ class _FlutterReduxAppState extends State<FlutterReduxApp>
                     GlobalWidgetsLocalizations.delegate,
                     GSYLocalizationsDelegate.delegate,
                   ],
-                  supportedLocales: [appLocale],
-                  locale: appLocale,
+                  supportedLocales: [effectiveLocale],
+                  locale: effectiveLocale,
                   theme: themeData,
                   navigatorObservers: [navigatorObserver],
 

lib/common/localization/default_localizations.dart

@@ -13,15 +13,15 @@ class GSYLocalizations {
 
   ///根据不同 locale.languageCode 加载不同语言对应
   ///GSYStringEn和GSYStringZh都继承了GSYStringBase
-  static final Map<String, GSYStringBase> _localizedValues = {
+  static final Map<String, GSYStringBase> localizedValues = {
     'en': GSYStringEn(),
     'zh': GSYStringZh(),
     'ja': GSYStringJa(),
     'ko': GSYStringKo(),
   };
 
   GSYStringBase? get currentLocalized {
-    return _localizedValues[locale.languageCode];
+    return localizedValues[locale.languageCode];
   }
 
   ///通过 Localizations 加载当前的 GSYLocalizations