android如何播放音视频【原】

// 选取视频按钮单击事件
 public void click_xuanqushipin(View source) {

  Intent intent = new Intent();
  /* 开启Pictures画面Type设定为image */
  intent.setType("video/*");
  /* 使用Intent.ACTION_GET_CONTENT这个Action */
  intent.setAction(Intent.ACTION_GET_CONTENT);
  /* 取得相片后返回本画面 */
  startActivityForResult(intent, 3);

 }

@Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  // 选取音频的返回值
  if (requestCode == 2) {
   //
   if (resultCode == RESULT_OK) {
    Uri uri = data.getData();
    //
    // toast = Toast.makeText(getApplicationContext(), "图片标题不能为空!",
    // Toast.LENGTH_LONG);
    // toast.setGravity(Gravity.CENTER_HORIZONTAL, 0, 0);
    // toast.show();
    //
    Cursor cursor = getContentResolver().query(uri, null, null,
      null, null);
    cursor.moveToFirst();
    // String imgNo = cursor.getString(0); // 图片编号
    gj.imgPath = cursor.getString(1); // 图片文件路径
    String imgName = cursor.getString(2); // 图片文件名
    String imgSize = cursor.getString(3); // 图片大小

    gj.fileName = imgName;
    gj.fileSize = imgSize;
    // Log.e("uri", uri.toString());
    ContentResolver cr = this.getContentResolver();
    try {
     // 尝试将音频文件 赋值给videoView
     //
     final MediaController mediaController = new MediaController(this);
     VideoView videoView = (VideoView) findViewById(R.id.videoView1);
     videoView.setMediaController(mediaController);
     //videoView.setVideoPath(gj.imgPath);
     videoView.setVideoURI(uri);
     videoView.requestFocus();
     videoView.start();

     
    } catch (Exception e) {
     // TODO: handle exception
    }
   }
  }

}