Merge branch 'master' into notifications

filcnaplo_mobile_ui/lib/screens/navigation/navigation_screen.dart

@@ -95,6 +95,46 @@ class NavigationScreenState extends State<NavigationScreen>
     }
   }
 
+  // Platform messages are asynchronous, so we initialize in an async method.
+  Future<void> initPlatformState() async {
+    // Configure BackgroundFetch.
+    int status = await BackgroundFetch.configure(
+        BackgroundFetchConfig(
+            minimumFetchInterval: 15,
+            stopOnTerminate: false,
+            enableHeadless: true,
+            requiresBatteryNotLow: false,
+            requiresCharging: false,
+            requiresStorageNotLow: false,
+            requiresDeviceIdle: false,
+            requiredNetworkType: NetworkType.ANY), (String taskId) async {
+      // <-- Event handler
+      // This is the fetch-event callback.
+      if (kDebugMode) {
+        print("[BackgroundFetch] Event received $taskId");
+      }
+
+      // IMPORTANT:  You must signal completion of your task or the OS can punish your app
+      // for taking too long in the background.
+      BackgroundFetch.finish(taskId);
+    }, (String taskId) async {
+      // <-- Task timeout handler.
+      // This task has exceeded its allowed running-time.  You must stop what you're doing and immediately .finish(taskId)
+      if (kDebugMode) {
+        print("[BackgroundFetch] TASK TIMEOUT taskId: $taskId");
+      }
+      BackgroundFetch.finish(taskId);
+    });
+    if (kDebugMode) {
+      print('[BackgroundFetch] configure success: $status');
+    }
+
+    // If the widget was removed from the tree while the asynchronous platform
+    // message was in flight, we want to discard the reply rather than calling
+    // setState to update our non-existent appearance.
+    if (!mounted) return;
+  }
+
   @override
   void initState() {
     super.initState();
@@ -138,7 +178,10 @@ class NavigationScreenState extends State<NavigationScreen>
   @override
   void didChangePlatformBrightness() {
     if (settings.theme == ThemeMode.system) {
-      Brightness? brightness = WidgetsBinding.instance.window.platformBrightness;
+      // ignore: deprecated_member_use
+      Brightness? brightness =
+          // ignore: deprecated_member_use
+          WidgetsBinding.instance.window.platformBrightness;
       Provider.of<ThemeModeObserver>(context, listen: false).changeTheme(
           brightness == Brightness.light ? ThemeMode.light : ThemeMode.dark);
     }