import 'package:flutter_local_notifications/flutter_local_notifications.dart'; class NotificationService { static final NotificationService _instance = NotificationService._internal(); factory NotificationService() => _instance; NotificationService._internal(); FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin(); Future initializeNotifications() async { const androidSettings = AndroidInitializationSettings( '@mipmap/ic_launcher' ); final iosSettings = DarwinInitializationSettings( ); final initializationSettings = InitializationSettings( android: androidSettings, iOS: iosSettings, ); await flutterLocalNotificationsPlugin.initialize( initializationSettings, ); } Future showNotification({required String title, required String body, required int badgeCount}) async { const androidPlatformChannelSpecifics = AndroidNotificationDetails( 'marmobile', 'Marianum Fulda', importance: Importance.defaultImportance, priority: Priority.defaultPriority, ticker: 'Marianum Fulda', ); const iosPlatformChannelSpecifics = DarwinNotificationDetails(); const platformChannelSpecifics = NotificationDetails( android: androidPlatformChannelSpecifics, iOS: iosPlatformChannelSpecifics ); await flutterLocalNotificationsPlugin.show( 0, title, body, platformChannelSpecifics, ); } }