我想要在播放器中播放一個名為"南征北戰-我的天空.mp4"的視訊，其路徑是"/storage/emulated/0/netease/cloudmusic/南征北戰-我的天空.mp4"，但是我最開始在安卓原始碼中寫的路徑如下：

String path = Environment.getExternalStorageDirectory().getAbsolutePath()+"/storage/emulated/0/netease/cloudmusic/MV/南征北戰-我的天空.mp4";

修改後的程式碼如下：

public class MainActivity extends AppCompatActivity {

    private VideoView videoView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        videoView = (VideoView) findViewById(R.id.viedoview);
        String path = Environment.getExternalStorageDirectory().getAbsolutePath()+"/netease/cloudmusic/MV/南征北戰-我的天空.mp4";
        File file = new File(path);
        /**
         * local vedio player
         */
        if(file.exists()) {
            videoView.setVideoPath(path);
        } else {
            Log.d("IO", "file doesn't exist");
        }
        /**
         * remote vedio player
         */
        //videoView.setVideoURI(Uri.parse(""));
        MediaController mediaController=new MediaController(this);
        /**
         * bind mediaController and videoView
         */
        videoView.setMediaController(mediaController);
        mediaController.setMediaPlayer(videoView);
    }
}