C# MediaPlayer.SetOnBufferingUpdateListener方法代码示例

		private void PlayVideo(SurfaceTexture surfaceTexture)
		{
			DoCleanUp();
			try
			{

				path = "http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/sl.m3u8";
				if (path == "")
				{
					// Tell the user to provide a media file URL.
					Toast.MakeText(this, "Please edit MediaPlayerDemo_setSurface Activity, " + "and set the path variable to your media file path." + " Your media file must be stored on sdcard.", ToastLength.Long).Show();
					return;
				}
				// Create a new media player and set the listeners
				mMediaPlayer = new MediaPlayer(this, true);
				mMediaPlayer.SetDataSource(path);
				if (surf == null)
				{
					surf = new Surface (surfaceTexture);
				}
				mMediaPlayer.SetSurface(surf);
				mMediaPlayer.PrepareAsync();
				mMediaPlayer.SetOnBufferingUpdateListener(this);
				mMediaPlayer.SetOnCompletionListener(this);
				mMediaPlayer.SetOnPreparedListener(this);
				VolumeControlStream = Stream.Music;

			}
			catch (Exception e)
			{
				Log.Error(TAG, "error: " + e.Message, e);
			}
		}

		private void PlayVideo(int Media)
		{
			DoCleanUp();
			try
			{

				switch (Media)
				{
				case LOCAL_VIDEO:
					//                
					//				 * TODO: Set the path variable to a local media file path.
					//				 
					path = "http://172.16.101.100:81/video/123.mp4";
					if (path == "")
					{
						// Tell the user to provide a media file URL.
						Toast.MakeText(this, "Please edit MediaPlayerDemo_Video Activity, " + "and set the path variable to your media file path." + " Your media file must be stored on sdcard.", ToastLength.Long).Show();
						return;
					}
					break;
				case STREAM_VIDEO:
					//                
					//				 * TODO: Set path variable to progressive streamable mp4 or
					//				 * 3gpp format URL. Http protocol should be used.
					//				 * Mediaplayer can only play "progressive streamable
					//				 * contents" which basically means: 1. the movie atom has to
					//				 * precede all the media data atoms. 2. The clip has to be
					//				 * reasonably interleaved.
					//				 * 
					//				 
						path = "http://172.16.101.100:81/video/123.mp4";
					if (path == "")
					{
						// Tell the user to provide a media file URL.
						Toast.MakeText(this, "Please edit MediaPlayerDemo_Video Activity," + " and set the path variable to your media file URL.", ToastLength.Long).Show();
						return;
					}

					break;

				}

				// Create a new media player and set the listeners
				mMediaPlayer = new MediaPlayer(this);
				mMediaPlayer.SetDataSource(path);
				mMediaPlayer.SetDisplay(holder);
				mMediaPlayer.PrepareAsync();
				mMediaPlayer.SetOnBufferingUpdateListener(this);
				mMediaPlayer.SetOnCompletionListener(this);
				mMediaPlayer.SetOnPreparedListener(this);
				mMediaPlayer.SetOnVideoSizeChangedListener(this);
				VolumeControlStream = Stream.Music;

			}
			catch (Exception e)
			{
				Log.Error(TAG, "error: " + e.Message, e);
			}
		}

		public void OnPrepared (MediaPlayer mp)
		{
			mp.Looping = true;
			int h = mp.VideoHeight;
			int w = mp.VideoWidth;

			mp.SetOnVideoSizeChangedListener (this);
			mp.SetOnBufferingUpdateListener (this);
			mp.SetOnSeekCompleteListener (this);
			mp.SetOnCompletionListener (this);

			int time = vv.Duration;
			int time_elapsed = vv.CurrentPosition;
			pb.Progress = time_elapsed;

			var timer = new CountDown (time, 500);
			timer.Tick += (long millisUntilFinished) => {
				float a = vv.CurrentPosition;
				float b = vv.Duration;

				pb.Progress = (int)(a/b*100);
			};
			timer.Finish += () => {
				Toast.MakeText (this, "Timer Finished", ToastLength.Short).Show ();
			};

			Toast.MakeText (this, "Video Prepared", ToastLength.Short).Show ();
		}

        /// <summary>
        /// Intializes the player.
        /// </summary>
        private void InitializePlayer ()
        {
            mediaPlayer = new MediaPlayer ();

            //Tell our player to sream music
            mediaPlayer.SetAudioStreamType (Stream.Music);

            //Wake mode will be partial to keep the CPU still running under lock screen
            mediaPlayer.SetWakeMode (ApplicationContext, WakeLockFlags.Partial);

            mediaPlayer.SetOnBufferingUpdateListener (this);
            mediaPlayer.SetOnCompletionListener (this);
            mediaPlayer.SetOnErrorListener (this);
            mediaPlayer.SetOnPreparedListener (this);
        }