Fixed issue with backgorund task not starting

lib/main.dart

@@ -14,7 +14,7 @@ import 'package:dynamic_color/dynamic_color.dart';
 import 'package:device_info_plus/device_info_plus.dart';
 
 const String currentReleaseTag =
-    'v0.5.2-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
+    'v0.5.3-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
 
 const String bgUpdateCheckTaskName = 'bg-update-check';
 
@@ -107,14 +107,21 @@ void main() async {
       ChangeNotifierProvider(create: (context) => SettingsProvider()),
       Provider(create: (context) => NotificationsProvider())
     ],
-    child: const MyApp(),
+    child: const Obtainium(),
   ));
 }
 
 var defaultThemeColour = Colors.deepPurple;
 
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
+class Obtainium extends StatefulWidget {
+  const Obtainium({super.key});
+
+  @override
+  State<Obtainium> createState() => _ObtainiumState();
+}
+
+class _ObtainiumState extends State<Obtainium> {
+  var existingUpdateInterval = -1;
 
   @override
   Widget build(BuildContext context) {
@@ -143,20 +150,23 @@ class MyApp extends StatelessWidget {
         ]);
       }
       // Register the background update task according to the user's setting
-      if (settingsProvider.updateInterval == 0) {
+      if (existingUpdateInterval != settingsProvider.updateInterval) {
+        existingUpdateInterval = settingsProvider.updateInterval;
+        if (existingUpdateInterval == 0) {
           Workmanager().cancelByUniqueName(bgUpdateCheckTaskName);
         } else {
           Workmanager().registerPeriodicTask(
               bgUpdateCheckTaskName, bgUpdateCheckTaskName,
-            frequency: Duration(minutes: settingsProvider.updateInterval),
-            initialDelay: Duration(minutes: settingsProvider.updateInterval),
+              frequency: Duration(minutes: existingUpdateInterval),
+              initialDelay: Duration(minutes: existingUpdateInterval),
               constraints: Constraints(networkType: NetworkType.connected),
-            existingWorkPolicy: ExistingWorkPolicy.keep,
+              existingWorkPolicy: ExistingWorkPolicy.replace,
               backoffPolicy: BackoffPolicy.linear,
               backoffPolicyDelay:
                   const Duration(minutes: minUpdateIntervalMinutes));
         }
       }
+    }
 
     return DynamicColorBuilder(
         builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {

lib/providers/settings_provider.dart

@@ -129,5 +129,6 @@ class SettingsProvider with ChangeNotifier {
 
   void setSettingString(String settingId, String value) {
     prefs?.setString(settingId, value);
+    notifyListeners();
   }
 }

pubspec.yaml

@@ -17,7 +17,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.5.2+23 # When changing this, update the tag in main() accordingly
+version: 0.5.3+24 # When changing this, update the tag in main() accordingly
 
 environment:
   sdk: '>=2.19.0-79.0.dev <3.0.0'

test/widget_test.dart

@@ -13,7 +13,7 @@ import 'package:obtainium/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const Obtainium());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);