public double SetVolume(double value)
        {
            var a = am.GetStreamVolume(Android.Media.Stream.Music);

            mMediaPlayer.SetVolume((int)value);

            return(mMediaPlayer.Volume);
        }
		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 ();
		}