launchalarm.java

private void startAlarm() {

  	// set vibrate
		vibrate = (Vibrator) getSystemService(VIBRATOR_SERVICE);
		long[] vibrate_pattern = { 1000, 200, 200 };
		vibrate.vibrate(vibrate_pattern, 0);
    //check if silent mode is on.
		if (!pass.getSilent()) {
			mP = new MediaPlayer();
			try {
				mP.setVolume(1.0f, 1.0f);
				mP.setDataSource(
						this,
						Uri.parse(RingtoneManager.getDefaultUri(
								RingtoneManager.TYPE_ALARM).toString()));
				mP.setAudioStreamType(AudioManager.STREAM_ALARM);
				mP.setLooping(true);
				mP.prepare();
				mP.start();
			} catch (Exception e) {
				mP.release();
				alarmActive = false;
			}
		}
	}