Myujth

I want to refresh my recycler view in fragment while receive FCM notification(if specific fragment is open) else receive notification.

I have tried multiple solutions, but that didn't work.

MyFirebaseMessagingService.java

@Override
public void onMessageReceived(RemoteMessage remoteMessage) 
 Map<String, String> data = remoteMessage.getData();

 if (remoteMessage.getNotification() != null) 
 String noti_body = remoteMessage.getNotification().getBody();
 String noti_title = remoteMessage.getNotification().getTitle();
 String noti_activity = data.get("activity");

 mBuilder = new NotificationCompat.Builder(this, "M_CH_ID")
 .setSmallIcon(R.mipmap.logo)
 .setContentTitle(noti_title)
 .setContentText(noti_body)
 .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.logo))
 .setColor(getResources().getColor(R.color.colorAccent))
 .setDefaults(Notification.DEFAULT_ALL)
 .setPriority(NotificationManager.IMPORTANCE_HIGH)
 .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
 .setAutoCancel(true); // clear notification after click

 if (remoteMessage.getData().size() > 0) 
 fragmentNewJobs c = new fragmentNewJobs();
 if (c.getUserVisibleHint()) //fragmentNewJobs.is_open
 Intent intent = new Intent(this, MainActivity.class);
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 intent.putExtra("activity", noti_activity);
 getApplicationContext().startActivity(intent);
 else 
 Intent intent = new Intent(this, MainActivity.class);
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 intent.putExtra("activity", noti_activity);

 @SuppressLint("WrongConstant")
 PendingIntent pi = PendingIntent.getActivity(this, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);
 mBuilder.setContentIntent(pi);
 NotificationManager mNotificationManager =
 (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
 mNotificationManager.notify(0, mBuilder.build());
 
 
 

fragmentNewJobs c = new fragmentNewJobs();
if (c.getUserVisibleHint())

I have tried this, but it load fragmentNewJobs.java even I have opened any screen.

1. 
   

   I want to refresh recyclerView in fragmentNewJobs.java only if fragmentNewJobs is open else receive notification.

   
   
   
   2. I want to add only new item to recyclerView(not load all data if possible)
   
   

You can use Event Bus to publish message from receiver to particular fragment or activity.

And to findout if activity is visible or not have a look at this

Or if you are using fragment you can use static variable in Application class to track fragment(Most basic use)

i want to add only new item to recycler view(not load all data if
possible)

• You can use BroadcastManager to send notification event to your existing Activity. Running Activity will add new item in List when it receive new broadcast.


• Another option to notify Activity can be EventBus, that is fast growing, easy implementation library for notifying between Services, Activities and Fragments.

How to use BroadcastManager?

How to use EventBus?

i want to refresh recyclerview in fragmentNewJobs.java only if
fragmentNewJobs is open else receive notification.

For this you can take a static boolean in Application class, and make it true on Fragment's onResume() and make it false on onPause().

Then you can check Fragment's visibility by ApplicationClass.isFragmentVisible()

Edit

You can change fragmentVisible boolean inside setUserVisibleHint() of Fragment, that will work perfectly. You will need to make initially UserVisibleHint false because it is true default. Check this answer for better understanding.