java制作仿微信视频播放控件

import java.io.IOException;
import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.util.AttributeSet;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
/**
 * 视频播放控件
*@author liuyinjun
* @date 2015-2-8
 */
public class MoviePlayerView extends SurfaceView {
  private SurfaceHolder mSurfaceHolder;
  private MediaPlayer mPlayer;
  public MoviePlayerView(Context context) {
    this(context, null);
  }
  public MoviePlayerView(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
  }
  public MoviePlayerView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mSurfaceHolder = this.getHolder();
    mSurfaceHolder.addCallback(mSurfaceHolderCallback); // holder加入回调接口
    mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);// setType必须设置，要不出错.
  }
  /**
   * 播放视频
   * @param fileName 文件路径
   */
  public void play(String fileName, final OnPlayCompletionListener completionListener) {
    mPlayer = new MediaPlayer();
    mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mPlayer.setDisplay(mSurfaceHolder); // 定义一个SurfaceView播放它
    mPlayer.setOnCompletionListener(new OnCompletionListener() {
      @Override
      public void onCompletion(MediaPlayer arg0) {
        stop();
        if(completionListener != null)
          completionListener.onPlayCompletion();
        // canvas.drawColor(Color.TRANSPARENT,
        // PorterDuff.Mode.CLEAR);
      }
    });
    try {
      mPlayer.setDataSource(fileName);
      mPlayer.prepare();
    } catch (IllegalStateException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    mPlayer.start();
  }
  private void stop() {
    if (mPlayer != null) {
      mPlayer.release();
      mPlayer = null;
    }
  }
  /**
   * 释放资源
   */
  public void release() {
    if (mPlayer != null) {
      mPlayer.release();
      mPlayer = null;
    }
  }
  private Callback mSurfaceHolderCallback = new Callback() {
    @Override
    public void surfaceDestroyed(SurfaceHolder arg0) {
      mSurfaceHolder = null;
    }
    @Override
    public void surfaceCreated(SurfaceHolder arg0) {
      // TODO Auto-generated method stub
      mSurfaceHolder = arg0;
    }
    @Override
    public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
        int arg3) {
      // TODO Auto-generated method stub
      mSurfaceHolder = arg0;
    }
  };
  /**
   * 播放成功回调
  *@author liuyinjun
  * @date 2015-2-9
   */
  public interface OnPlayCompletionListener{
    public void onPlayCompletion();
  }
}