gsi_ess_mobile/lib/NotificationService/local_notification_service.dart

import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';

import '../Screens/Settings/settings_screen.dart';

class LocalNotificationService{
  static final FlutterLocalNotificationsPlugin _notificationsPlugin = FlutterLocalNotificationsPlugin();

  static void initialize() {
    // initializationSettings  for Android
    const InitializationSettings initializationSettings = InitializationSettings(
      android: AndroidInitializationSettings("@mipmap/ic_launcher"),
    );

    _notificationsPlugin.initialize(initializationSettings, onDidReceiveNotificationResponse:  (details) {
      print("onSelectNotification");
        var context;
        Navigator.push(context as BuildContext, MaterialPageRoute(
                builder: (context) => SettingsScreen()));

      },
    );
    _notificationsPlugin.initialize(initializationSettings, onDidReceiveBackgroundNotificationResponse:  (details) {
      print("onSelectNotification-Background");
      var context;
      Navigator.push(context as BuildContext, MaterialPageRoute(
          builder: (context) => SettingsScreen()));
    },);
  }

  static void createanddisplaynotification(RemoteMessage message) async {
    try {
      final id = DateTime.now().millisecondsSinceEpoch ~/ 1000;
      const NotificationDetails notificationDetails = NotificationDetails(
        android: AndroidNotificationDetails(
          "pushnotificationapp",
          "pushnotificationappchannel",
          //icon: "@mipmap/ic_launcher",
          largeIcon: DrawableResourceAndroidBitmap('assets/images/sindi_icon.png'),
          enableVibration: true,
          importance: Importance.max,
          priority: Priority.high,
        ),
      );

      await _notificationsPlugin.show(
        id,
        message.notification!.title,
        message.notification!.body,
        notificationDetails,
        payload: message.data['_id'],
      );
    } on Exception catch (e) {
      print(e);
    }
  }
}