private static final String TAG = "MyFMService";
public boolean isAppOpened = true;
public static boolean notificationReceived = false;
Bundle b;

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    Log.d(TAG, "FCM Message Id: " + remoteMessage.getMessageId());
    Log.d(TAG, "FCM Notification Message: " +
            remoteMessage.getNotification());
    Log.d(TAG, "FCM Data Message: " + remoteMessage.getData());
    showNotification(remoteMessage.getData());
}


public void showNotification(Map<String,String> r) {
    try {
       Intent intent;
        try {
            SessionContext.createSessionFromCurrentSession();
        }catch (IllegalStateException e){
            isAppOpened=false;
        }
        if (isAppOpened) {
            notificationReceived=true;
            if (!(r.get("type").equals("0"))) {
                Notifications.notificationId = Long.parseLong(r.get("notificationId"));
                NewPost.postType = (SessionContext.getUserId() ==
                        Long.parseLong(r.get("postedUserId"))) ?
                        getResources().getString(R.string.post_type_my_post) :
                        getResources().getString(R.string.post_type_relevant_post);

                Map<String, Object> postMap = new HashMap<>();

                postMap.put("threadId", r.get("threadId"));
                postMap.put("profileUrl", r.get("profileUrl"));
                postMap.put("firstName", r.get("firstName"));
                postMap.put("lastName", r.get("lastName"));
                postMap.put("categoryId", r.get("categoryId"));
                postMap.put("timestamp", Long.parseLong(r.get("timeStamp")));
                postMap.put("subject", r.get("subject"));
                postMap.put("threadStatus", r.get("threadStatus"));
                postMap.put("userId", String.valueOf(SessionContext.getUserId()));
                postMap.put("postedUserId", r.get("postedUserId"));
                postMap.put("userName", r.get("userName"));

                ViewThread.post = new Post(postMap);
                NewPost.currentPostId = ViewThread.post.getThreadId();
                NewPost.currentPosition = (SessionContext.getUserId() ==
                        Long.parseLong(r.get("postedUserId"))) ? 0 : 1;
                NewPost.postedUserId = Long.parseLong(ViewThread.post.getPostedUserId());
                HomeScreen.categoryId = Long.parseLong(ViewThread.post.getCategoryId());

                intent = new Intent(this, ViewThread.class);
                intent.putExtra("THREAD", ViewThread.post);
                // startActivity(intent);

            } else {
                intent = new Intent(this, Notifications.class);
            }
        } else {
            notificationReceived=true;
            intent = new Intent(this, SplashScreen.class);
        }




        PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setContentTitle("New Notification")
                .setContentText(r.get("notification"))
                .setSmallIcon(R.drawable.d4e_logo)
                .setContentIntent(pIntent)
                .setAutoCancel(true)
                .addAction(R.drawable.view_icon, "View", pIntent);
          /*  .addAction(R.drawable.icon, "More", pIntent)
            .addAction(R.drawable.icon, "And more", pIntent).build();*/


        NotificationManager notificationManager =
                (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        notificationManager.notify(0, builder.build());
    } catch (Exception exception) {
        exception.printStackTrace();
    }
}