Android RecyclerView which is in a Fragment which is in a ViewPager does not reload/refresh views if setOffscreenPageLimit is reached

Question

I have a RecyclerView in a Fragment which again is in a ViewPager, when I swipe between ViewPager pages, I see that onDetach of Fragment is being called but for some reason RecyclerView is still present in that particular position for the Fragment in ViewPager, even the scroll position of RecyclerView is being preserved when I come back to the detached Fragment.

I am using FragmentStatePagerAdapter for ViewPager and I am returning POSITION_NONE from getItemPosition() but it has no effect.

Please help me understand the problem here.

Answer 1

Try this points.

1) MyAdapter extends FragmentStatePagerAdapter

2) Set Adapter from fragment using getChildFragmentManager() eg : mViewPager.setAdapter(new MyAdapter(getChildFragmentManager(), getActivity(), this))

3) From ViewpagerFrgment Override setUserVisibleHint method

@Override
    public void setUserVisibleHint(boolean isVisibleToUser) {
        super.setUserVisibleHint(isVisibleToUser);
        if (isVisibleToUser) {
            //Update Recyclerview
        } else {

        }
    }