Fehlerkorrekturen und Erweiterungen

lib/main.dart

@@ -211,7 +211,7 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
 
   final ValueNotifier<bool> _connectionLostValueNotifier = ValueNotifier<bool>(true);
 
-  late AnimationController? _animationController = null;
+  late AnimationController? _animationController;
   late Animation<double> _animation;
 
   Timer? _checkForNewState0JobsJobsTimer;
@@ -426,20 +426,28 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
   }
 
   void _replaceContentView(ContentViewWidget widget) async {
+    final currentContext = context;
     Future.delayed(const Duration(seconds: 0), () async {
       contentStack.clear();
 
-      setState(() {
-        _currentContent = widget;
-      });
+      if (mounted) {
+        setState(() {
+          _currentContent = widget;
+        });
+      }
 
-      _currentTitleWidget = await _currentContent.getHeaderWidget(context);
+      if (mounted) {
+        _currentTitleWidget = await _currentContent.getHeaderWidget(currentContext);
+      }
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
   }
 
   void _popContentView(int count) {
+    final currentContext = context;
     Future.delayed(const Duration(seconds: 0), () async {
       for (int i = 0; i < count - 1; i++) {
         contentStack.pop();
@@ -449,19 +457,26 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
 
       _currentContent = previousContentView;
 
-      _currentTitleWidget = await _currentContent.getHeaderWidget(context);
+      if (mounted) {
+        _currentTitleWidget = await _currentContent.getHeaderWidget(currentContext);
+      }
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
   }
 
   void _pushContentView(ContentViewWidget widget) {
+    final currentContext = context;
     Future.delayed(const Duration(seconds: 0), () async {
       contentStack.push(_currentContent);
 
       _currentContent = widget;
 
-      _currentTitleWidget = await _currentContent.getHeaderWidget(context);
+      if (mounted) {
+        _currentTitleWidget = await _currentContent.getHeaderWidget(currentContext);
+      }
 
       if (mounted) {
         setState(() {});