System.out.println("cao");
        AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.SECOND, 5);


        Intent intent = new Intent(this, NotificationService.class);
        intent.putExtra("gato", "gato");
        startService(intent);
        //Intent intent = new Intent("android.media.action.DISPLAY_NOTIFICATION");
        PendingIntent broadcast = PendingIntent.getBroadcast(this, 100, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        am.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), broadcast);