public override void OnCreate ()
{
base.OnCreate ();
audio_manager = (AudioManager)GetSystemService (AudioService);
//set the original volume and max volume variables to the phone's current and max volume levels
orig_volume = audio_manager.GetStreamVolume (Android.Media.Stream.Ring);
max_volume = audio_manager.GetStreamMaxVolume (Android.Media.Stream.Ring);
//set the sound for the alarm to the phone's alarm tone
alarm_sound = RingtoneManager.GetDefaultUri (RingtoneType.Alarm);
media_player = new MediaPlayer ();
}
