updated project style guidelines

lib/notification/notificationController.dart

@@ -60,4 +60,4 @@ class NotificationController {
       ));
     });
   }
-}
+}

lib/notification/notificationService.dart

@@ -3,27 +3,25 @@ import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 class NotificationService {
   static final NotificationService _instance = NotificationService._internal();
 
-  factory NotificationService() {
-    return _instance;
-  }
+  factory NotificationService() => _instance;
 
   NotificationService._internal();
 
   FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
 
   Future<void> initializeNotifications() async {
-    const AndroidInitializationSettings androidSettings = AndroidInitializationSettings(
+    const androidSettings = AndroidInitializationSettings(
         '@mipmap/ic_launcher'
     );
 
-    final DarwinInitializationSettings iosSettings = DarwinInitializationSettings(
+    final iosSettings = DarwinInitializationSettings(
       onDidReceiveLocalNotification: (id, title, body, payload) {
         // TODO Navigate to Talk section (This runs when an Notification is tapped)
       },
     );
 
 
-    final InitializationSettings initializationSettings = InitializationSettings(
+    final initializationSettings = InitializationSettings(
       android: androidSettings,
       iOS: iosSettings,
     );
@@ -34,7 +32,7 @@ class NotificationService {
   }
 
   Future<void> showNotification({required String title, required String body, required int badgeCount}) async {
-    const AndroidNotificationDetails androidPlatformChannelSpecifics =
+    const androidPlatformChannelSpecifics =
     AndroidNotificationDetails(
       'marmobile',
       'Marianum Fulda',
@@ -43,9 +41,9 @@ class NotificationService {
       ticker: 'Marianum Fulda',
     );
 
-    const DarwinNotificationDetails iosPlatformChannelSpecifics = DarwinNotificationDetails();
+    const iosPlatformChannelSpecifics = DarwinNotificationDetails();
 
-    const NotificationDetails platformChannelSpecifics = NotificationDetails(
+    const platformChannelSpecifics = NotificationDetails(
       android: androidPlatformChannelSpecifics,
       iOS: iosPlatformChannelSpecifics
     );
@@ -57,4 +55,4 @@ class NotificationService {
       platformChannelSpecifics,
     );
   }
-}
+}

lib/notification/notificationTasks.dart

@@ -20,4 +20,4 @@ class NotificationTasks {
   static void navigateToTalk() {
     App.bottomNavigator.jumpToTab(1);
   }
-}
+}

lib/notification/notifyUpdater.dart

@@ -8,8 +8,7 @@ import '../storage/base/settingsProvider.dart';
 import '../widget/confirmDialog.dart';
 
 class NotifyUpdater {
-  static ConfirmDialog enableAfterDisclaimer(SettingsProvider settings) {
-    return ConfirmDialog(
+  static ConfirmDialog enableAfterDisclaimer(SettingsProvider settings) => ConfirmDialog(
       title: 'Warnung',
       icon: Icons.warning_amber,
       content: ''
@@ -25,9 +24,8 @@ class NotifyUpdater {
         NotifyUpdater.registerToServer();
       },
     );
-  }
-  static void registerToServer() async {
-    String? fcmToken = await FirebaseMessaging.instance.getToken();
+  static Future<void> registerToServer() async {
+    var fcmToken = await FirebaseMessaging.instance.getToken();
 
     if(fcmToken == null) throw Exception('Failed to register push notification because there is no FBC token!');
 
@@ -39,4 +37,4 @@ class NotifyUpdater {
       ),
     ).run();
   }
-}
+}