解决用VideoView 播放一些视频无法播放问题

private MediaController mController;

private VideoView mVideoView;

private File mTmpFile = null;

/** 解决用VideoView 播放一些视频无法播放问题 */
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_video);

    init();
}

private void init() {
    mProgressDialog = new ProgressDialog(this);

    mVideoView = (VideoView) findViewById(R.id.surface_video);
    mVideoView.requestFocus();
    mController = new MediaController(this);
    mVideoView.setMediaController(mController);

    mVideoView.setOnPreparedListener(this);
    mVideoView.setOnCompletionListener(this);
    mVideoView.setOnErrorListener(this);

    String url = getIntent().getExtras().getString(MainActivity.VIDEO_URL_EXTRA_KEY);

        url = getCacheDir().toString().concat("/" + VideoLoaderTask.VIDEO_DIR + "/").concat(url);
        copyToTmpFile(url);//在setVideoPath调用即可
        mVideoView.setVideoPath(mTmpFile.getAbsolutePath());


    mProgressDialog.show();
    mVideoView.start();
}

@Override
public void onDestroy() {
    if (mTmpFile != null) {
        mTmpFile.delete();
    }
    super.onDestroy();
}

private void copyToTmpFile(String url) {
    File f = new File(url);
    try {
        mTmpFile = File.createTempFile("video", null);
        mTmpFile.deleteOnExit();

        FileInputStream is = new FileInputStream(f);
        int size = is.available();
        byte[] buffer = new byte[size];
        is.read(buffer);
        is.close();

        FileOutputStream fos = new FileOutputStream(mTmpFile);
        fos.write(buffer);
        fos.close();
    } catch (Exception e) {
        mVideoView.setVideoURI(Uri.parse(url));
    }
}