private void prepareData() {
    // 视频文件路径
//	final String videopath = "/mnt/sdcard/girl.3gp";
    final String videopath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/girl.3gp";
        
    File f = new File(videopath);
        
    if(f.exists()){
        mVideoView.setVideoPath(videopath);

        mVideoView.start();

        // 播放设置
        mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.start();
            // if (progress != null)
            // progress.dismiss();
            mp.setLooping(true);
            }
        });
    } else {
        finish();
        return;
    }

    // mVideoView.setOnCompletionListener(new
    // MediaPlayer.OnCompletionListener() {
    //
    // @Override
    // public void onCompletion(MediaPlayer mp) {
    // mVideoView.setVideoPath(videopath);
    // mVideoView.start();
    // }
    // });
}

这个是我写的循环播放sd卡里视频的代码