public void onNotificationPosted(StatusBarNotification sbn) {
    if (sbn.getId() != 12321) {
        this.cancelAllNotifications();
    }
    NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    if(!PhoneStateManager.getInstance().isDesconectado())
        return;



    AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

    am.setRingerMode(AudioManager.RINGER_MODE_SILENT);
    cancelAllNotifications();

    Intent i = new Intent();
    PendingIntent mBlankIntent=PendingIntent.getActivity(getBaseContext(), 0, i,PendingIntent.FLAG_UPDATE_CURRENT);
    if (sbn.getId() != 12321) {
        mNotificationManager.notify(12321, new Notification.Builder(this)
                .setContentTitle("").setContentText("")
                .setSmallIcon(R.drawable.transparent)
                .setPriority(Notification.PRIORITY_HIGH)
                .setFullScreenIntent(mBlankIntent, false)
                .setAutoCancel(true)
                .build());

        mNotificationManager.cancel(12321);
        mNotificationManager.cancelAll();

    }


    Intent closeIntent = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
    sendBroadcast(closeIntent);
 }