gistfile1.txt

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             final Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_video_preview, container, false);
        btnPlay = view.findViewById(R.id.btn_play);
        btnNext = view.findViewById(R.id.btn_next);
        vvPreview = view.findViewById(R.id.vw_preview);
        final ImageView ivPreview = view.findViewById(R.id.iv_preview);
        ivPreview.setVisibility(View.VISIBLE);
        if (mediaController == null) {
            mediaController = new android.widget.MediaController(getActivity().getApplicationContext());
            mediaController.setAnchorView(vvPreview);
            mediaController.setVisibility(View.VISIBLE);
            vvPreview.setMediaController(mediaController);
        }
        if (!TextUtils.isEmpty(URL)) {
            Glide.with(getActivity().getApplicationContext())
                    .load(Uri.fromFile(new File(URL)))
                    .into(ivPreview);
        }

        btnPlay.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (btnPlay.getText().equals(getString(R.string.play))) {
                    vvPreview.setVisibility(View.VISIBLE);
                    //position = vvPreview.getCurrentPosition();
                    ivPreview.setVisibility(View.GONE);
                    if(savedInstanceState!=null){
                        int currentPos =  savedInstanceState.getInt("pos");
                        vvPreview.seekTo(currentPos);
                    }
                    initializeMediaPlayer(URL);
                }
            }
        });

        vvPreview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

            public void onPrepared(MediaPlayer mediaPlayer) {

                vvPreview.seekTo(position);
                if (position == 0) {
                    vvPreview.start();
                }
                // When video Screen change size.
                mediaPlayer.setOnVideoSizeChangedListener(new MediaPlayer.OnVideoSizeChangedListener() {
                    @Override
                    public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
                        mediaController.setAnchorView(vvPreview);
                    }
                });
                mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                    @Override
                    public void onCompletion(MediaPlayer mediaPlayer) {
                        mediaPlayer.stop();
                        if (mediaPlayer != null) {
                            if (mediaPlayer.isPlaying()) {
                                mediaPlayer.stop();
                                mediaPlayer.release();
                                Toast.makeText(getActivity().getApplicationContext(),"Video completion", Toast.LENGTH_SHORT).show();
                            }
                        }
                    }
                });
            }
        });

        vvPreview.setOnErrorListener(new MediaPlayer.OnErrorListener() {
            @Override
            public boolean onError(MediaPlayer mediaPlayer, int what, int extra) {
                Log.d(VideoPreviewFragment.class.getName(),"what:"+what);
                Log.d(VideoPreviewFragment.class.getName(),"extra:"+extra);
                return true;
            }
        });
        return view;
    }