Upgrade to Flutter v3.24.2

.fvmrc

@@ -1,5 +1,5 @@
 {
-  "flutter": "3.22.2",
+  "flutter": "3.24.2",
   "runPubGetOnSdkChanges": false,
   "updateVscodeSettings": true,
   "updateGitIgnore": false

.vscode/settings.json

@@ -1,5 +1,5 @@
 {
-  "dart.flutterSdkPath": ".fvm/versions/3.22.2",
+  "dart.flutterSdkPath": ".fvm/versions/3.24.2",
   "search.exclude": {
     "**/.fvm": true
   },

app/lib/account/account_page.dart

@@ -49,9 +49,9 @@ class _AccountPageState extends State<AccountPage> {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/account/profile/user_edit/user_edit_page.dart

@@ -114,9 +114,9 @@ class _UserEditPageState extends State<UserEditPage> {
   Widget build(BuildContext context) {
     return BlocProvider(
       bloc: bloc,
-      child: PopScope(
+      child: PopScope<Object?>(
         canPop: false,
-        onPopInvoked: (didPop) async {
+        onPopInvokedWithResult: (didPop, _) async {
           if (didPop) {
             return;
           }

app/lib/activation_code/src/enter_activation_code_result_dialog.dart

@@ -59,11 +59,13 @@ class EnterActivationCodeResultDialog {
         body: LoadingEnterActivationCodeResultDialog());
   }
 
-  Future<void> show(BuildContext context) {
+  Future<void> show(BuildContext context) async {
     hideKeyboard(context: context);
     final joinResultStream = enterActivationCodeBloc.enterActivationCodeResult;
-    final stateSheetContentStream = joinResultStream.map((joinResult) =>
-        mapStateSheetContentFromJoinResult(joinResult, context));
+    final stateSheetContentStream = joinResultStream.map((joinResult) {
+      if (!context.mounted) return const StateSheetContent(body: SizedBox());
+      return mapStateSheetContentFromJoinResult(joinResult, context);
+    });
     final stateSheet = StateSheet(stateSheetContentStream);
 
     return stateSheet.showSheet(context);

app/lib/auth/reset_pw_page.dart

@@ -155,18 +155,20 @@ class _EmailField extends StatelessWidget {
             onEditingComplete: () async {
               final isValid = await bloc.submitValid.first;
               if (isValid) {
-                bloc
-                    .submit()
-                    .then((_) => showSnack(
-                        text: _ResetPasswordPage.erfolg,
-                        duration: const Duration(seconds: 5),
-                        context: context))
-                    .catchError((e, StackTrace s) {
-                  log('$e', error: e, stackTrace: s);
+                bloc.submit().then((_) {
+                  if (!context.mounted) return;
                   showSnack(
-                      text: _ResetPasswordPage.error,
+                      text: _ResetPasswordPage.erfolg,
                       duration: const Duration(seconds: 5),
                       context: context);
+                }).catchError((e, s) {
+                  log('$e', error: e, stackTrace: s);
+                  if (!context.mounted) return;
+                  showSnack(
+                    text: _ResetPasswordPage.error,
+                    duration: const Duration(seconds: 5),
+                    context: context,
+                  );
                 });
               }
             },
@@ -196,11 +198,12 @@ class _SubmitButton extends StatelessWidget {
             FocusManager.instance.primaryFocus?.unfocus();
             sendDataToFrankfurtSnackBar(context);
             snapshot.hasData && snapshot.data == true
-                ? bloc
-                    .submit()
-                    .then((_) => showConfirmationDialog(context))
-                    .catchError((e, StackTrace s) {
+                ? bloc.submit().then((_) {
+                    if (!context.mounted) return;
+                    showConfirmationDialog(context);
+                  }).catchError((e, StackTrace s) {
                     log('$e', error: e, stackTrace: s);
+                    if (!context.mounted) return;
                     showSnack(
                         text: _ResetPasswordPage.error,
                         duration: const Duration(seconds: 5),

app/lib/blackboard/blackboard_card.dart

@@ -45,7 +45,7 @@ void openDetails(
     builder: (BuildContext context) => BlackboardDetails(view: view),
   ))
       .then((BlackboardPopOption? popOption) {
-    if (popOption != null) {
+    if (popOption != null && context.mounted) {
       if (popOption == BlackboardPopOption.deleted) {
         logBlackboardDeleteEvent(context);
         showUserConfirmationOfBlackboardDeleted(context);

app/lib/blackboard/blackboard_dialog.dart

@@ -114,9 +114,9 @@ class __BlackboardDialogState extends State<_BlackboardDialog> {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) async {
+      onPopInvokedWithResult: (didPop, _) async {
         if (didPop) return;
 
         final hasInputChanged = widget.bloc.hasInputChanged();

app/lib/blackboard/blackboard_page.dart

@@ -54,9 +54,9 @@ class BlackboardPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/calendrical_events/page/calendrical_events_page.dart

@@ -44,9 +44,9 @@ class _CalendricalEventsPageState extends State<CalendricalEventsPage> {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/feedback/feedback_box_page.dart

@@ -36,9 +36,9 @@ class FeedbackPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/filesharing/file_sharing_page_controller.dart

@@ -27,9 +27,9 @@ class FileSharingPageController extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final pageStateBloc = BlocProvider.of<FileSharingPageStateBloc>(context);
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) async {
+      onPopInvokedWithResult: (didPop, _) async {
         if (didPop) return;
 
         final pageState = pageStateBloc.currentStateValue;

app/lib/filesharing/widgets/upload_file_dialog.dart

@@ -26,6 +26,7 @@ Future<void> showUploadFileDialog({
   await uploadTask.onComplete.then((result) {
     if (result.bytesTransferred == result.totalByteCount) {
       analytics.log(NamedAnalyticsEvent(name: "file_add"));
+      if (!context.mounted) return;
       Navigator.pop(context);
     }
   });

app/lib/groups/group_join/group_join_result_dialog.dart

@@ -94,10 +94,13 @@ class GroupJoinResultDialog {
   Future<void> show(BuildContext context) {
     hideKeyboard(context: context);
     final joinResultStream = groupJoinBloc.joinResult;
-    final stateSheetContentStream = joinResultStream.map((joinResult) =>
-        mapStateSheetContentFromJoinResult(joinResult, context));
+    final stateSheetContentStream = joinResultStream.map((joinResult) {
+      if (!context.mounted) return const StateSheetContent(body: SizedBox());
+      return mapStateSheetContentFromJoinResult(joinResult, context);
+    });
     joinResultStream.listen((joinResult) {
       if (joinResult is RequireCourseSelectionsJoinResult) {
+        if (!context.mounted) return;
         openGroupJoinCoursePageIfNotYetOpen(context, joinResult);
       }
     });

app/lib/groups/src/pages/course/create/pages/course_create_page.dart

@@ -91,9 +91,9 @@ class _CourseCreatePageState extends State<_CourseCreatePage> {
   Widget build(BuildContext context) {
     return BlocProvider(
       bloc: bloc,
-      child: PopScope(
+      child: PopScope<Object?>(
         canPop: false,
-        onPopInvoked: (didPop) async {
+        onPopInvokedWithResult: (didPop, _) async {
           if (didPop) return;
 
           final hasInputChanged = bloc.hasUserEditInput();

app/lib/groups/src/pages/course/group_page.dart

@@ -99,9 +99,9 @@ class GroupPageState extends State<GroupPage> {
   Widget build(BuildContext context) {
     final gateway =
         BlocProvider.of<SharezoneContext>(context).api.connectionsGateway;
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/homework/homework_dialog/homework_dialog.dart

@@ -247,9 +247,9 @@ class HomeworkDialogMainState extends State<HomeworkDialogMain> {
               const Center(child: CircularProgressIndicator()),
             SavedSuccessfully() => throw UnimplementedError(
                 'Placeholder, we pop the Navigator above so this should not be reached.'),
-            Ready() => PopScope(
+            Ready() => PopScope<Object?>(
                 canPop: false,
-                onPopInvoked: (didPop) async {
+                onPopInvokedWithResult: (didPop, _) async {
                   if (didPop) return;
 
                   final hasInputChanged = hasModifiedData();

app/lib/homework/shared/homework_card.dart

@@ -75,6 +75,7 @@ class HomeworkCard extends StatelessWidget {
             defaultValue: false,
             name: HomeworkDetails.tag,
           ).then((value) {
+            if (!context.mounted) return;
             if (value) showDataArrivalConfirmedSnackbar(context: context);
           });
         },
@@ -341,6 +342,7 @@ class HomeworkCardRedesigned extends StatelessWidget {
                   defaultValue: false,
                   name: HomeworkDetails.tag,
                 ).then((value) {
+                  if (!context.mounted) return;
                   if (value) showDataArrivalConfirmedSnackbar(context: context);
                 });
               },

app/lib/homework/student/src/mark_overdue_homework_prompt.dart

@@ -49,42 +49,46 @@ class _MarkOverdueHomeworkPromptState extends State<MarkOverdueHomeworkPrompt> {
     analytics.log(_OverdueAnalyticsEvent.displayed());
     return Padding(
       padding: const EdgeInsets.fromLTRB(8.0, 8.0, 8.0, 0.0),
-      child: CustomCard(
-        borderWidth: 2,
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.center,
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Padding(
-              padding: const EdgeInsets.only(top: 10),
-              child: Text(
-                "Alle überfälligen Hausaufgaben abhaken?",
-                style: textTheme.titleLarge?.apply(fontSizeFactor: 0.9),
-                textAlign: TextAlign.center,
-              ),
-            ),
-            ButtonBar(
-              children: <Widget>[
-                TextButton(
-                  child: const Text("Schließen"),
-                  onPressed: () {
-                    analytics.log(_OverdueAnalyticsEvent.closed());
-                    setState(() {
-                      visible = false;
-                    });
-                    cache.setAlreadyDismissed(true);
-                  },
+      child: SizedBox(
+        width: MediaQuery.of(context).size.width,
+        child: CustomCard(
+          borderWidth: 2,
+          padding: const EdgeInsets.all(8),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.center,
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: <Widget>[
+              Padding(
+                padding: const EdgeInsets.only(top: 10),
+                child: Text(
+                  "Alle überfälligen Hausaufgaben abhaken?",
+                  style: textTheme.titleLarge?.apply(fontSizeFactor: 0.9),
+                  textAlign: TextAlign.center,
                 ),
-                FilledButton(
-                  onPressed: () {
-                    analytics.log(_OverdueAnalyticsEvent.confirmed());
-                    bloc.add(CompletedAllOverdue());
-                  },
-                  child: const Text("Abhaken"),
-                )
-              ],
-            ),
-          ],
+              ),
+              OverflowBar(
+                children: <Widget>[
+                  TextButton(
+                    child: const Text("Schließen"),
+                    onPressed: () {
+                      analytics.log(_OverdueAnalyticsEvent.closed());
+                      setState(() {
+                        visible = false;
+                      });
+                      cache.setAlreadyDismissed(true);
+                    },
+                  ),
+                  FilledButton(
+                    onPressed: () {
+                      analytics.log(_OverdueAnalyticsEvent.confirmed());
+                      bloc.add(CompletedAllOverdue());
+                    },
+                    child: const Text("Abhaken"),
+                  )
+                ],
+              ),
+            ],
+          ),
         ),
       ),
     );

app/lib/homework/student/student_homework_page.dart

@@ -36,9 +36,9 @@ class StudentHomeworkPage extends StatelessWidget {
         Theme.of(context).isDarkTheme ? Colors.grey[900] : Colors.grey[100];
     return ChangeNotifierProvider<BottomOfScrollViewInvisibilityController>(
       create: (_) => BottomOfScrollViewInvisibilityController(),
-      child: PopScope(
+      child: PopScope<Object?>(
         canPop: false,
-        onPopInvoked: (didPop) {
+        onPopInvokedWithResult: (didPop, _) {
           if (didPop) return;
           popToOverview(context);
         },

app/lib/homework/teacher_and_parent/teacher_and_parent_homework_page.dart

@@ -33,9 +33,9 @@ class TeacherAndParentHomeworkPage extends StatelessWidget {
         Theme.of(context).isDarkTheme ? Colors.grey[900] : Colors.grey[100];
     return ChangeNotifierProvider<BottomOfScrollViewInvisibilityController>(
       create: (_) => BottomOfScrollViewInvisibilityController(),
-      child: PopScope(
+      child: PopScope<Object?>(
         canPop: false,
-        onPopInvoked: (didPop) {
+        onPopInvokedWithResult: (didPop, _) {
           if (didPop) return;
           popToOverview(context);
         },

app/lib/onboarding/group_onboarding/pages/create_schoolclass.dart

@@ -160,6 +160,7 @@ class __TextFieldSubmitButtonState extends State<_TextFieldSubmitButton> {
     final schoolClassBloc = BlocProvider.of<MySchoolClassBloc>(context);
     setState(() => isLoading = true);
     schoolClassBloc.createSchoolClass(name).then((result) async {
+      if (!context.mounted) return;
       if (result.hasData && result.data == true) {
         isLoading = false;
         final schoolClassID = schoolClassBloc.schoolClassId;

app/lib/report/page/report_page.dart

@@ -59,9 +59,9 @@ class _ReportPageState extends State<ReportPage> {
   Widget build(BuildContext context) {
     return BlocProvider(
       bloc: bloc,
-      child: PopScope(
+      child: PopScope<Object?>(
         canPop: false,
-        onPopInvoked: (didPop) async {
+        onPopInvokedWithResult: (didPop, _) async {
           if (didPop) return;
 
           final hasInputChanged = bloc.wasEdited();

app/lib/settings/settings_page.dart

@@ -52,9 +52,9 @@ class SettingsPageBody extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (didPop) return;
         popToOverview(context);
       },

app/lib/settings/src/subpages/timetable/periods/periods_edit_page.dart

@@ -83,9 +83,9 @@ class __PeriodsEditPageState extends State<_PeriodsEditPage> {
 
   @override
   Widget build(BuildContext context) {
-    return PopScope(
+    return PopScope<Object?>(
       canPop: false,
-      onPopInvoked: (didPop) async {
+      onPopInvokedWithResult: (didPop, _) async {
         if (didPop) return;
 
         final shouldPop = await warnUserAboutLeavingOrSavingForm(