无法通过视频观看错误播放视频

Question

我尝试了几乎所有内容但无法播放视频....我在手机中复制了视频...效果很好..但应用显示错误＆＃34;无法播放此内容视频＆＃34; ..请帮助我......这是我的代码..

 public class MainActivity extends AppCompatActivity {
        private Button button;
        private VideoView videoView3;
        private MediaController mc;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            button = (Button) findViewById(R.id.button);

            button.setOnClickListener(new View.OnClickListener(){

                @Override
                public void onClick(final View view)
                {
                    String path ="android.resource://"+"/"+ R.raw.video;
                    videoView3 = (VideoView) findViewById(R.id.videoView3);
                    videoView3.setVideoURI(Uri.parse(path));
                    videoView3.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                        @Override
                        public void onPrepared(MediaPlayer mp) {
                            MediaController mc = new MediaController(MainActivity.this);
                            videoView3.setMediaController(mc);
                            mc.setAnchorView(view);
                            videoView3.requestFocus();
                            videoView3.start();

                        }
                    });
                }
            });

        }