屏幕旋轉時如何保存滾動位置？

我通過在活動中重寫onSaveInstanceState來保存對象的ArrayList。在該活動的onCreate方法中，我還原了我保存的對象列表。屏幕旋轉時如何保存滾動位置？

下面是該活動的代碼 -

public class MovieListActivity extends AppCompatActivity { 

private EndlessRecyclerViewScrollListener scrollListener; 
private ArrayList<Movie> movies; 
private MovieListAdapter movieListAdapter; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_movie_list); 
    RecyclerView moviesRecyclerView = (RecyclerView) findViewById(R.id.movie_list_rv); 

    if (savedInstanceState == null || !savedInstanceState.containsKey("movieList")) { 
     movies = createMovies(30); 
    } else { 
     // Restoring only the list of movies not the scroll position 
     movies = savedInstanceState.getParcelableArrayList("movieList"); 
    } 

    movieListAdapter = new MovieListAdapter(this, movies); 
    LinearLayoutManager layoutManager = new LinearLayoutManager(this); 

    moviesRecyclerView.setAdapter(movieListAdapter); 
    moviesRecyclerView.setLayoutManager(layoutManager); 

    scrollListener = new EndlessRecyclerViewScrollListener(layoutManager) { 
     @Override 
     public void onLoadMore(int page, final int totalItemsCount, RecyclerView view) { 
      Handler handler = new Handler(); 
      final Runnable r = new Runnable() { 
       public void run() { 
        movies.addAll(createMovies(20)); 
        movieListAdapter.notifyItemRangeInserted(totalItemsCount, movies.size() - 1); 
       } 
      }; 
      handler.post(r); 
     } 
    }; 
    moviesRecyclerView.addOnScrollListener(scrollListener); 
} 

@Override 
protected void onSaveInstanceState(Bundle outState) { 
    // Saving only the list of movies 
    outState.putParcelableArrayList("movieList", movies); 
    super.onSaveInstanceState(outState); 
} 

private ArrayList<Movie> createMovies(int numberOfMovies) { 
    ArrayList<Movie> movieList = new ArrayList<>(); 
    for(int i=0; i<numberOfMovies; i++) { 
     movieList.add(new Movie("Hello", new DateTime("2017-03-16T01:20"), "This is a very good movie")); 
    } 
    Log.i("Create", "create called"); 
    return movieList; 
}

}

當我旋轉屏幕，不僅對象，但也將滾動位置恢復。