在屏幕旋转时保存exoplayer流的位置和文本，并且视频也不应暂停

Question

如何在屏幕旋转时保存Exoplayer视频的当前位置和文本，并且视频不应在屏幕旋转时暂停？我尝试在outState.putInt("position",(int) player.getCurrentPosition);上使用onSaveInstanceState()，但是没有用。下面的当前代码显示了调试时recipeName == null上的onSaveInstanceState。

public class RecipeStepDetailFragment extends Fragment  {
    private SimpleExoPlayerView simpleExoPlayerView;
    private SimpleExoPlayer player;
    private BandwidthMeter bandwidthMeter;
    private ArrayList<Step> steps = new ArrayList<>();
    private int selectedIndex;
    private Handler mainHandler;
    private String recipeName;
    private int contentPosition;

    public RecipeStepDetailFragment() {

    }

   private ListItemClickListener itemClickListener;

    public interface ListItemClickListener {
        void onListItemClick(List<Step> allSteps,int Index,String recipeName);
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        TextView textView;
        mainHandler = new Handler();
        bandwidthMeter = new DefaultBandwidthMeter();

        itemClickListener =(RecipeDetailActivity)getActivity();

        ArrayList<Recipe> recipe = new ArrayList<>();

        if(savedInstanceState != null) {
            steps = savedInstanceState.getParcelableArrayList(SELECTED_STEPS);
            selectedIndex = savedInstanceState.getInt(SELECTED_INDEX);
            recipeName = savedInstanceState.getString("Title");

            }
        else {
            assert getArguments() != null;
            steps =getArguments().getParcelableArrayList(SELECTED_STEPS);
            if (steps!=null) {
                steps =getArguments().getParcelableArrayList(SELECTED_STEPS);
                selectedIndex=getArguments().getInt(SELECTED_INDEX);
                recipeName=getArguments().getString("Title");
            }
            else {
                recipe =getArguments().getParcelableArrayList(SELECTED_RECIPES);
                //casting List to ArrayList
                assert recipe != null;
                steps=(ArrayList<Step>) recipe.get(0).getSteps();
                selectedIndex=0;
            }

        }



        View rootView = inflater.inflate(R.layout.recipe_step_detail_fragment_body_part, container, false);
        textView = rootView.findViewById(R.id.recipe_step_detail_text);
        textView.setText(steps.get(selectedIndex).getDescription());
        textView.setVisibility(View.VISIBLE);

        simpleExoPlayerView = rootView.findViewById(R.id.playerView);
        simpleExoPlayerView.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_FIT);

        String videoURL = steps.get(selectedIndex).getVideoURL();

        if (rootView.findViewWithTag("sw600dp-port-recipe_step_detail")!=null) {
           recipeName=((RecipeDetailActivity) Objects.requireNonNull(getActivity())).recipeName;
           Objects.requireNonNull(((RecipeDetailActivity) getActivity()).getSupportActionBar()).setTitle(recipeName);
        }

        String imageUrl=steps.get(selectedIndex).getThumbnailURL();
        if (!imageUrl.equals("")) {
            Uri builtUri = Uri.parse(imageUrl).buildUpon().build();
            ImageView thumbImage = rootView.findViewById(R.id.thumbImage);
            Picasso.with(getContext()).load(builtUri).into(thumbImage);
        }

        if (!videoURL.isEmpty()) {


            initializePlayer(Uri.parse(steps.get(selectedIndex).getVideoURL()));

           if (rootView.findViewWithTag("sw600dp-land-recipe_step_detail")!=null) {
                getActivity().findViewById(R.id.fragment_container2).setLayoutParams(new LinearLayout.LayoutParams(-1,-2));
                simpleExoPlayerView.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH);
            }
            else if (isInLandscapeMode(Objects.requireNonNull(getContext()))){
                textView.setVisibility(View.GONE);
            }
        }
        else {
            player=null;
            simpleExoPlayerView.setForeground(ContextCompat.getDrawable(Objects.requireNonNull(getContext()), R.drawable.ic_visibility_off_white_36dp));
            simpleExoPlayerView.setLayoutParams(new LinearLayout.LayoutParams(300, 300));
        }


        Button mPrevStep = rootView.findViewById(R.id.previousStep);
        Button mNextstep = rootView.findViewById(R.id.nextStep);

        mPrevStep.setOnClickListener(view -> {
        if (steps.get(selectedIndex).getId() > 0) {
            if (player!=null){
                player.stop();
            }
            itemClickListener.onListItemClick(steps,steps.get(selectedIndex).getId() - 1,recipeName);
        }
        else {
            Toast.makeText(getActivity(),"You already are in the First step of the recipe", Toast.LENGTH_SHORT).show();

        }
    });

        mNextstep.setOnClickListener(view -> {

        int lastIndex = steps.size()-1;
        if (steps.get(selectedIndex).getId() < steps.get(lastIndex).getId()) {
            if (player!=null){
                player.stop();
            }
            itemClickListener.onListItemClick(steps,steps.get(selectedIndex).getId() + 1,recipeName);
        }
        else {
            Toast.makeText(getContext(),"You already are in the Last step of the recipe", Toast.LENGTH_SHORT).show();

        }
    });




        return rootView;
    }

    private void initializePlayer(Uri mediaUri) {
        if (player == null) {
            TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveVideoTrackSelection.Factory(bandwidthMeter);
            DefaultTrackSelector trackSelector = new DefaultTrackSelector(mainHandler, videoTrackSelectionFactory);
            LoadControl loadControl = new DefaultLoadControl();

            player = ExoPlayerFactory.newSimpleInstance(Objects.requireNonNull(getContext()), trackSelector, loadControl);
            simpleExoPlayerView.setPlayer(player);

            String userAgent = Util.getUserAgent(getContext(), "Baking App");
            MediaSource mediaSource = new ExtractorMediaSource(mediaUri, new DefaultDataSourceFactory(getContext(), userAgent), new DefaultExtractorsFactory(), null, null);
            player.prepare(mediaSource);
            player.setPlayWhenReady(true);
        }else{
            player.getCurrentPosition();
        }

    }

    @Override
    public void onSaveInstanceState(@NonNull Bundle currentState) {
        super.onSaveInstanceState(currentState);
        currentState.putParcelableArrayList(SELECTED_STEPS,steps);
        currentState.putInt(SELECTED_INDEX,selectedIndex);
        currentState.putString("Title",recipeName);
//what code should I insert to save both the text and exoplayer on Screen rotation

        // (int)
    }

    private boolean isInLandscapeMode(Context context) {
        return (context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE);
    }

    @Override
    public void onDetach() {
        super.onDetach();
        if (player!=null) {
            player.stop();
            player.release();
        }
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        if (player!=null) {
            player.stop();
            player.release();
            player=null;
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        if (player!=null) {
            player.stop();
            player.release();
        }
    }

    @Override
    public void onPause() {
        super.onPause();
        if (player!=null) {
            player.stop();
            player.release();
        }
    }


}