Fehlerkorrekturen und Erweiterungen

lib/content_views/main_page.dart

@@ -58,6 +58,14 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
   @override
   void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicRemoveJob);
+    unsubscribe(queueId: Constants.messageTopicJobReceived);
+    unsubscribe(queueId: Constants.messageTopicMessageReceived);
+    unsubscribe(queueId: Constants.messageTopicJobDeleted);
+    unsubscribe(queueId: Constants.messageTopicUpdateBadges);
+    unsubscribe(queueId: Constants.messageTopicBWVEnabled);
+
     super.dispose();
   }
 
@@ -304,10 +312,12 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
     subscribe(
         queueId: Constants.messageTopicBWVEnabled,
         callback: (message) {
-          setState(() {
-            _showBWVButton =
-                Util.preferencesGetBool(Constants.prefsBWVEnabled, false);
-          });
+          if (mounted) {
+            setState(() {
+              _showBWVButton =
+                  Util.preferencesGetBool(Constants.prefsBWVEnabled, false);
+            });
+          }
         });
   }
 
@@ -337,7 +347,9 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
       _loggedOut = false;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     }
   }
 
@@ -368,7 +380,9 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
             Navigator.of(MyApp.appNavigatorKey.currentContext!).pop();
 
-            setState(() {});
+            if (mounted) {
+              setState(() {});
+            }
           });
         });
       },
@@ -441,6 +455,15 @@ class _HeaderWidgetState extends State<_HeaderWidget> with ConsumerMixin {
     _initMessages();
   }
 
+  @override
+  void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicSessionStatusInfoUpdate);
+    unsubscribe(queueId: Constants.messageTopicLocationStatusUpdated);
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     var cellWidth = (MediaQuery.of(context).size.width - 60 - 60 - 25) / 2;