Class to show notification from firebase cloud messaging service

MyMessagingService.java

package com.cb.androidwarriorfcmdemo;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

/**
 * Created by kundan on 1/26/2017.
 */

public class MyMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        String message = remoteMessage.getNotification().getBody();
        showSimpleNotification(message);
    }


    /**
     * method to show notification from message retrived from firebase cloud messaging
     * @param message
     */
    void showSimpleNotification(String message) {
        
        NotificationManager mNotificationManager = (NotificationManager) this.getApplicationContext().getSystemService(this.NOTIFICATION_SERVICE);
        Intent resultIntent = new Intent(this, MainActivity.class);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(MainActivity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);

        // Pending intent to the notification manager
        PendingIntent resultPending = stackBuilder
                .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

        // Building the notification
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher) // notification icon
                .setContentTitle("Android warriors") // main title of the notification
                .setContentText(message) // notification text
                .setContentIntent(resultPending); // notification intent

        // mId allows you to update the notification later on.
        mNotificationManager.notify(10, mBuilder.build());
    }
}