Example of simple media player function implemented by Android development

/**
  * @Description Create video using surfaceview
  * @Project name App_Basic
  * @Bank Name
  * @Class Name MediaPlayerActivity
  * @author chenlin
  * @date 2013-3-25 7:36:32 AM
  * @version 1.0
  */
public class MediaPlayerActivity extends BaseActivity {
  private MediaPlayer mPlayer;
  private Button mBtnPlay;
  private Button mBtnPause;
  private SurfaceView mSurfaceView;
  private int mCurrentPosition;
  private SeekBar seekBar;
  private boolean isPlaying;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    (savedInstanceState);
    mSurfaceView = new SurfaceView(this);
    seekBar = new SeekBar(this);
    (new OnSeekBarChangeListener() {
      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {
        int progress = ();
        if (mPlayer != null && isPlaying) {
          (progress);
        }
      }
      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
      }
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        // TODO Auto-generated method stub
      }
    });
    ().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    ().addCallback(new Callback() {
      @Override
      public void surfaceDestroyed(SurfaceHolder holder) {
        if (mPlayer!= null && ()) {
          mCurrentPosition = ();
          stop();
        }
      }
      @Override
      public void surfaceCreated(SurfaceHolder holder) {
        if (mCurrentPosition > 0) {
          play(mCurrentPosition);
        }
      }
      @Override
      public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        // TODO Auto-generated method stub
      }
    });
  }
  public void play(final int currentPosition){
    try {
      mPlayer = new MediaPlayer();
      (AudioManager.STREAM_MUSIC);
      Uri myUri = (new File("sdcard/mp3/1.mp3"));
      (getApplicationContext(), myUri);
      (true);
      (());
      ();
      //();
      (false);
      (new OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
          (true);
          ();
        }
      });
      (new OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
          (true);
          ();
          isPlaying = false;
          return false;
        }
      });
      (new OnPreparedListener() {
        public void onPrepared(MediaPlayer mp) {
          ();
          (currentPosition);
          (());
          new Thread(new Runnable() {
            @Override
            public void run() {
              isPlaying = true;
              while(isPlaying){
                (());
                (500);
              }
            }
          });
        }
      });
    } catch (Exception e) {
      ();
    }
  }
  public void pause(){
    if ("Continuation".equals(().toString())) {
      ("pause");
      ();
      return;
    }
    if (mPlayer != null && ()) {
      ();
      ("continue");
      return;
    }
  }
  public void reset(){
    if (mPlayer != null && ()) {
      (0);
      return;
    }
    play(0);
  }
  public void stop(){
    if (mPlayer != null && ()) {
      ();
      ();
      mPlayer = null;
      (true);
      isPlaying = false;
    }
  }
}