title: How to open a Fragment after notification click? Firebase
body: <p>I created a a function "send_notification" with firebase function and node.js and now at the end it's difficult to figure out how to open a Fragment instead of an Activity in my FirebaseMessagingService class.</p>
  
  <p>this is my code</p>
  
  <pre><code>public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService {
  
      @Override
      public void onMessageReceived(RemoteMessage remoteMessage) {
          super.onMessageReceived(remoteMessage);
  
  
  
          String notification_title = remoteMessage.getNotification().getTitle();
          String notification_message = remoteMessage.getNotification().getBody();
  
  
          NotificationCompat.Builder mBuilder =
                  (NotificationCompat.Builder) new NotificationCompat.Builder(this)
                          .setSmallIcon(R.mipmap.logo_login)
                          .setContentTitle(notification_title)
                          .setContentText(notification_message);
  
  
  
  
          //i need to open a fragment not Main Activiti
          Intent resultIntent = new Intent(this, MainActivity.class);
  
          PendingIntent resultPendingIntent =
                  PendingIntent.getActivity(
                          this,
                          0,
                          resultIntent,
                          PendingIntent.FLAG_UPDATE_CURRENT
                  );
  
          mBuilder.setContentIntent(resultPendingIntent);
  
          //----------------------------------------------------
  
  
  
  
  
  
  
  
  
  
          int mNotificationId = (int) System.currentTimeMillis();
          NotificationManager mNotifyMgr =
                  (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
          mNotifyMgr.notify(mNotificationId, mBuilder.build());
  
  
  
      }
  
  
  }
  </code></pre>