MyFragment.java

public class MyFragment extends DialogFragment {

    private User user;

    private ViewPager viewPager;

    private MyViewPagerAdapter myViewPagerAdapter;

    public static MyFragment newInstance() {
        MyFragment fragment = new MyFragment();

        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_main, container, false);

        viewPager = (ViewPager) v.findViewById(R.id.viewPager);

        user = Parcels.unwrap(getArguments().getParcelable("user"));

        myViewPagerAdapter = new MyViewPagerAdapter();
        viewPager.setAdapter(myViewPagerAdapter);

        setCurrentItem(selectedPosition);

        return v;
    }

    private void setCurrentItem(int position) {
        viewPager.setCurrentItem(position, false);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
    }

    public class MyViewPagerAdapter extends PagerAdapter {

        private LayoutInflater layoutInflater;

        private VideoView videoView;

        public MyViewPagerAdapter() {
            //
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            layoutInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            View view = layoutInflater.inflate(R.layout.video_layout, container, false);

            UserVideo video = user.getVideos().get(position);

            videoView = (VideoView) view.findViewById(R.id.video);
          
            new Handler(Looper.myLooper()).post(new Runnable(){
                @Override
                public void run(){
                    Uri videoUri = Uri.parse(video.getUrl());

                    videoView.setVideoURI(videoUri);
                    videoView.setMediaController(null);
                    videoView.requestFocus();
                    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                        public void onPrepared(MediaPlayer mp) {
                            videoView.start();
                            mp.setLooping(true);
                        }
                    });
                }
            });

            container.addView(view);

            return view;
        }

        @Override
        public int getCount() {
            return user.getVideos().size();
        }

        @Override
        public boolean isViewFromObject(View view, Object obj) {
            return view == ((View) obj);
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView((View) object);
        }
    }
}