How to show flutter local notification while receiving push notification on foreground?

Since I didn't get an answer I tried on my own and figured it out.

Do not forget to add the flutter_local_notifications library to your project for working this codehttps://pub.dev/packages/flutter_local_notifications

TESTED AND WORKING FOR ANDROID

FirebaseMessaging _firebaseMessaging = FirebaseMessaging();FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();  @override  void initState() {var initializationSettingsAndroid =        new AndroidInitializationSettings('@mipmap/ic_launcher');    var initializationSettingsIOS = new IOSInitializationSettings();    var initializationSettings = new InitializationSettings(        initializationSettingsAndroid, initializationSettingsIOS);    flutterLocalNotificationsPlugin.initialize(initializationSettings,        onSelectNotification: onSelectNotification);    _firebaseMessaging.configure(      onMessage: (Map<String, dynamic> message) async {        showNotification(            message['notification']['title'], message['notification']['body']);        print("onMessage: $message");      },      onLaunch: (Map<String, dynamic> message) async {        print("onLaunch: $message");        Navigator.pushNamed(context, '/notify');      },      onResume: (Map<String, dynamic> message) async {        print("onResume: $message");      },    );}Future onSelectNotification(String payload) async {    showDialog(      context: context,      builder: (_) {        return new AlertDialog(          title: Text("PayLoad"),          content: Text("Payload : $payload"),        );      },    );  }void showNotification(String title, String body) async {    await _demoNotification(title, body);  }  Future<void> _demoNotification(String title, String body) async {    var androidPlatformChannelSpecifics = AndroidNotificationDetails(        'channel_ID', 'channel name', 'channel description',        importance: Importance.Max,        playSound: true,        sound: 'sound',        showProgress: true,        priority: Priority.High,        ticker: 'test ticker');    var iOSChannelSpecifics = IOSNotificationDetails();    var platformChannelSpecifics = NotificationDetails(        androidPlatformChannelSpecifics, iOSChannelSpecifics);    await flutterLocalNotificationsPlugin        .show(0, title, body, platformChannelSpecifics, payload: 'test');  }

It works like a charm. Hopefully will help someone out :)

I made this class with a static method init() and call it once from initState of first page of my app

const AndroidNotificationChannel channel = AndroidNotificationChannel(  'my_channel', // id  'My Channel', // title  'Important notifications from my server.', // description  importance: Importance.high,);class Notifications {  static Future init() async {    await Firebase.initializeApp();    FirebaseMessaging _firebaseMessaging = FirebaseMessaging.instance;        final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =        FlutterLocalNotificationsPlugin();    await flutterLocalNotificationsPlugin        .resolvePlatformSpecificImplementation<            AndroidFlutterLocalNotificationsPlugin>()        ?.createNotificationChannel(channel);    await FirebaseMessaging.instance        .setForegroundNotificationPresentationOptions(      alert: true,      badge: true,      sound: true,    );    FirebaseMessaging.onMessage.listen((RemoteMessage message) {      RemoteNotification notification = message.notification;      AndroidNotification android = message.notification?.android;      if (notification != null && android != null) {        flutterLocalNotificationsPlugin.show(            notification.hashCode,            notification.title,            notification.body,            NotificationDetails(              android: AndroidNotificationDetails(                channel.id,                channel.name,                channel.description,                icon: 'some_icon_in_drawable_folder',              ),            ));      }    });  }}