If anyone’s still looking for a solution to this, I found an answer at How to play ringtone/alarm sound in Android
try {
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
r.play();
} catch (Exception e) {
e.printStackTrace();
}
You can change TYPE_NOTIFICATION to TYPE_ALARM, but you’ll want to keep track of your Ringtone r in order to stop playing it… say, when the user clicks a button or something.