切换语言无需重启

lib/main.dart

@@ -35,6 +35,12 @@ class MyApp extends StatefulWidget {
     required this.encouragementService,
   });
 
+  // Static method to access the state from anywhere (returns void to avoid exposing private type)
+  static void updateLocale(BuildContext context, String localeCode) {
+    final state = context.findAncestorStateOfType<_MyAppState>();
+    state?.updateLocale(localeCode);
+  }
+
   @override
   State<MyApp> createState() => _MyAppState();
 }
@@ -68,6 +74,13 @@ class _MyAppState extends State<MyApp> {
     }
   }
 
+  // Method to update locale from settings
+  void updateLocale(String localeCode) {
+    setState(() {
+      _locale = Locale(localeCode);
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(