How Do I Store Users Position From Recyclerview And Use Scrolltoposition() To Cast It?

I am using a RecyclerView to display movie posters in a Gridlayout. My goal is to save the position of the user, so when they rotate the phone it will save their position. movieGri

Solution 1:

Try saving just the position and restore with that instead.

private static final String SCROLL_POSITION = "SCROLL_POSITION";

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt(SCROLL_POSITION, ((LinearLayoutManager) movieGrid.getLayoutManager()).findFirstVisibleItemPosition());
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    final int position = savedInstanceState.getInt(SCROLL_POSITION);
    movieGrid.postDelayed(new Runnable() {
        public void run() {
           movieGrid.scrollToPosition(position);
        }
    }, 300);
}