Flutter Firebase Notifications and Open Particular Screen on Clicking on Push Notification

dependencies:

firebase_core: ^1.11.0
firebase_messaging: ^11.2.5

     flutter_local_notifications: ^9.2.0

buildscript {
    repositories {
        google() // add this if not there
        jcenter()
    }

    dependencies {
       
        classpath 'com.google.gms:google-services:4.3.3' //add here line 
    }
}

apply plugin: 'com.android.application'

apply plugin: 'com.google.gms.google-services'

// add the plugin on top or at the bottom og build-gradle (app-level)

<intent-filter>

<action android:name="FLUTTER_NOTIFICATION_CLICK" />

<category android:name="android.intent.category.DEFAULT" />

</intent-filter>

<meta-data
    android:name="com.google.firebase.messaging.default_notification_icon"
    android:resource="@drawable/notification" />
<meta-data
    android:name="com.google.firebase.messaging.default_notification_color"
    android:resource="@color/colorPrimary" />

await Firebase.initializeApp();
Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  // If you're going to use other Firebase services in the background, such as Firestore,
  // make sure you call `initializeApp` before using other Firebase services.

  await Firebase.initializeApp(options: FirebaseOptions(
    appId: 'ADD_APP_ID',
    apiKey: 'API_KEY',
    projectId: 'PROJECT_ID', messagingSenderId: '',
  ));//For ios add ios app id which we can get from firebase console

}

/// Create a [AndroidNotificationChannel] for heads up notifications
late AndroidNotificationChannel channel;

/// Initialize the [FlutterLocalNotificationsPlugin] package.
late FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);

if (!kIsWeb) {
  channel = const AndroidNotificationChannel(
    'notification_channel_id', // id
    'Notification Title', // title

    importance: Importance.high,
  );

  flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();

  /// Create an Android Notification Channel.
  ///
  /// We use this channel in the `AndroidManifest.xml` file to override the
  /// default FCM channel to enable heads up notifications.
  await flutterLocalNotificationsPlugin
      .resolvePlatformSpecificImplementation<
      AndroidFlutterLocalNotificationsPlugin>()
      ?.createNotificationChannel(channel);

  /// Update the iOS foreground notification presentation options to allow
  /// heads up notifications.
  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 && !kIsWeb) {
    FlutterLocalNotificationsPlugin().show(
      notification.hashCode,
      notification.title,
      notification.body,
      NotificationDetails(
        android: AndroidNotificationDetails(
          "tutorialspoint_notification",
          "Tutorialspoint Online",
          channelDescription: "",
          // TODO add a proper drawable resource to android, for now using
          //      one that already exists in example app.
          icon: 'notification',
        ),
      ),
    );
  }
});

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

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
    // If you're going to use other Firebase services in the background, such as Firestore,
    // make sure you call `initializeApp` before using other Firebase services.

    await Firebase.initializeApp(options: FirebaseOptions(
      appId: 'Add APP_IS',
      apiKey: 'ADD API_KEY',
      projectId: 'ADD_PROJECT_ID', messagingSenderId: '',
    ));

  }

  /// Create a [AndroidNotificationChannel] for heads up notifications
  late AndroidNotificationChannel channel;

  /// Initialize the [FlutterLocalNotificationsPlugin] package.
  late FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
  FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);

  if (!kIsWeb) {
    channel = const AndroidNotificationChannel(
      'tutorialspoint_notification', // id
      'Tutorialspoint Online', // title

      importance: Importance.high,
    );

    flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();

    /// Create an Android Notification Channel.
    ///
    /// We use this channel in the `AndroidManifest.xml` file to override the
    /// default FCM channel to enable heads up notifications.
    await flutterLocalNotificationsPlugin
        .resolvePlatformSpecificImplementation<
        AndroidFlutterLocalNotificationsPlugin>()
        ?.createNotificationChannel(channel);

    /// Update the iOS foreground notification presentation options to allow
    /// heads up notifications.
    await FirebaseMessaging.instance
        .setForegroundNotificationPresentationOptions(
      alert: true,
      badge: true,
      sound: true,
    );
    }
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {

  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      RemoteNotification? notification = message.notification;
      AndroidNotification? android = message.notification?.android;
      if (notification != null && android != null && !kIsWeb) {
        FlutterLocalNotificationsPlugin().show(
          notification.hashCode,
          notification.title,
          notification.body,
          NotificationDetails(
            android: AndroidNotificationDetails(
              "tutorialspoint_notification",
              "Tutorialspoint Online",
              channelDescription: "",
              // TODO add a proper drawable resource to android, for now using
              //      one that already exists in example app.
              icon: 'notification',
            ),
          ),
        );
      }
    });
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
  Log.d("Printing on Message Notification click");
  message.data.keys.forEach((element) {
    Log.d("Printing on Message Notification click keys ${element}");
  });
  if (message != null) {
    if(message.data.isNotEmpty)
      {
        String course_id=message.data['course_id'] as String;
        String type=message.data['type'] as String;
        

      }
    Navigator.of(context).pushNamedAndRemoveUntil(
      AppRoutes.landing,
          (Route<dynamic> route) => false,
    );
  }
});