Erweiterungen

lib/content_views/main_page.dart

@@ -55,6 +55,17 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
     _refreshBadges();
 
     _initMessages();
+    
+    // Listener für Sprachänderungen
+    AppLocalizations().languageNotifier.addListener(_onLanguageChanged);
+  }
+  
+  void _onLanguageChanged() {
+    if (mounted) {
+      setState(() {
+        // UI wird neu aufgebaut mit neuer Sprache
+      });
+    }
   }
 
   @override
@@ -66,6 +77,9 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
     unsubscribe(queueId: Constants.messageTopicJobDeleted);
     unsubscribe(queueId: Constants.messageTopicUpdateBadges);
     unsubscribe(queueId: Constants.messageTopicBWVEnabled);
+    
+    // Entferne Listener für Sprachänderungen
+    AppLocalizations().languageNotifier.removeListener(_onLanguageChanged);
 
     super.dispose();
   }
@@ -459,6 +473,17 @@ class _HeaderWidgetState extends State<_HeaderWidget> with ConsumerMixin {
     _updateHeader();
 
     _initMessages();
+    
+    // Listener für Sprachänderungen
+    AppLocalizations().languageNotifier.addListener(_onLanguageChanged);
+  }
+  
+  void _onLanguageChanged() {
+    if (mounted) {
+      setState(() {
+        // UI wird neu aufgebaut mit neuer Sprache
+      });
+    }
   }
 
   @override
@@ -466,6 +491,9 @@ class _HeaderWidgetState extends State<_HeaderWidget> with ConsumerMixin {
     // Unsubscribe from all message topics
     unsubscribe(queueId: Constants.messageTopicSessionStatusInfoUpdate);
     unsubscribe(queueId: Constants.messageTopicLocationStatusUpdated);
+    
+    // Entferne Listener für Sprachänderungen
+    AppLocalizations().languageNotifier.removeListener(_onLanguageChanged);
 
     super.dispose();
   }

lib/main.dart

@@ -57,6 +57,7 @@ Future<void> main() async {
     MQClient.instance.declareQueue(Constants.messageTopicUpdateBadges);
     MQClient.instance.declareQueue(Constants.messageTopicRemoveState0JobFromMap);
     MQClient.instance.declareQueue(Constants.messageTopicBWVEnabled);
+    MQClient.instance.declareQueue(Constants.messageTopicLanguageChanged);
 
     final dir = await getApplicationDocumentsDirectory();
     MyApp.objectBoxStore = await openStore(directory: dir.path);

lib/popups/infos_popup.dart

@@ -37,13 +37,10 @@ void showInfosPopup(SessionStatus? status) async {
               }
 
               void onLanguageChanged(AppLanguage? newLanguage) {
-                if (newLanguage != null) {
+                if (newLanguage != null && newLanguage != AppLocalizations().currentLanguage) {
                   AppLocalizations().setLanguage(newLanguage);
                   setState(() {});
-                  
+                  // Der ValueNotifier in AppLocalizations signalisiert die Änderung automatisch
-                  // Sende Nachricht an MainPage, um UI zu aktualisieren
-                  // Wir verwenden einen einfachen Ansatz: Die App wird neu geladen
-                  // In einer echten App würde man hier einen State-Management-Mechanismus verwenden
                 }
               }
 

lib/tools/app_localizations.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/material.dart';
 import 'package:stadtbote/tools/util.dart';
 
 enum AppLanguage {
@@ -33,12 +34,16 @@ class AppLocalizations {
 
   static const String _prefsLanguageKey = 'app_language';
 
+  // ValueNotifier für Sprachänderungen
+  final ValueNotifier<AppLanguage> languageNotifier = ValueNotifier<AppLanguage>(AppLanguage.german);
+
   AppLanguage _currentLanguage = AppLanguage.german;
 
   AppLanguage get currentLanguage => _currentLanguage;
 
   void setLanguage(AppLanguage language) {
     _currentLanguage = language;
+    languageNotifier.value = language;
     Util.preferencesSaveString(_prefsLanguageKey, language.code);
   }
 
@@ -46,6 +51,7 @@ class AppLocalizations {
     final savedCode = Util.preferencesGetString(_prefsLanguageKey, null);
     if (savedCode != null) {
       _currentLanguage = AppLanguage.fromCode(savedCode);
+      languageNotifier.value = _currentLanguage;
     }
   }
 

lib/tools/constants.dart

@@ -25,6 +25,7 @@ class Constants {
   static const String messageTopicRequestConnectionStatus = "request_connection_status";
   static const String messageTopicCurrentConnectionStatus = "current_connection_status";
   static const String messageTopicBWVEnabled = "bwv_enabled";
+  static const String messageTopicLanguageChanged = "language_changed";
 
   static const String messageShowPopup = "show_popup";
 

lib/tools/messages/language_changed_message.dart

@@ -0,0 +1,7 @@
+import 'package:stadtbote/tools/app_localizations.dart';
+
+class LanguageChangedMessage {
+  final AppLanguage newLanguage;
+
+  LanguageChangedMessage(this.newLanguage);
+}