private void handleNotification(RemoteMessage remoteMessage) {
    String notTitle = remoteMessage.getNotification().getTitle();
    String notBody = remoteMessage.getNotification().getBody();

    Intent resultIntent = new Intent(this, HomeActivity.class);
    resultIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

    resultIntent.putExtra("pushNotClick", "yes");
    resultIntent.putExtra("pushNotHead", ""+notTitle);

    PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
    mBuilder.setSmallIcon(R.drawable.fb_icon);
    mBuilder.setColor(getResources().getColor(R.color.colorPrimary));
    mBuilder.setContentTitle(notBody)
            .setContentText(notTitle)
            .setAutoCancel(true)
            .setContentIntent(resultPendingIntent);
    NotificationManager mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
        notificationChannel.enableLights(true);
        assert mNotificationManager != null;
        mBuilder.setSmallIcon(R.mipmap.icon_not);
        mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
        mNotificationManager.createNotificationChannel(notificationChannel);
    }
    assert mNotificationManager != null;
    mNotificationManager.notify((int) System.currentTimeMillis() /* Request Code */, mBuilder.build());
}

String notState = getIntent().getStringExtra("pushNotClick");
    String notHead = getIntent().getStringExtra("pushNotHead");