how to prevent recyclerview scroll to top automatically in fragment onResume

I faced a problem with my recyclerview and fragments . It made me crazy . My English is not so good but I try to explain it. I have a view pager with 2 different fragments and these two fragments load a same fragments with different data . this inner fragment load data to a recyclerview . loading data run on inner fragment OnResume() method (first checked if adapter is null then load data to recyclerview . ) The problem is here when I clicked on recyclerview items it start new activity and when I back from activity to fragment recyclerview jump to top of the list . However it is not loading new data . I tried to save recyclerview state on onPause method and restore it on onResume but it is not work . if I do it with delay it works but first it jump to top and then back to last item and it is not good at all .bellow code

/* new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
               // if(state !=null)
                recyclerViewFragmentChannel.getLayoutManager().onRestoreInstanceState(mBundleRecyclerViewState.getParcelable(KEY_RECYCLER_STATE));
            }
        }, 1000);*/

I am wondering if anybody can help me to overcome with this problem .I want to prevent recyclerview jump to top. I attached my inner fragment codes to make my explain more clear .

my inner fragment :

public class Fragment_Channels extends Fragment {

private static final String ARG_COUNT = "param1";
private Integer counter;
private Adapter adapter;
private View view;
private List<Fragment> fragmentsList;
private RecyclerView recyclerViewFragmentChannel;
private GridLayoutManager layoutManagerPortrait, layoutManagerLandScape;
private Parcelable state;
private Bundle mBundleRecyclerViewState;
private String KEY_RECYCLER_STATE = "recycler_state";

public Fragment_Channels() {
    // Required empty public constructor
}

public static Fragment_Channels newInstance(Integer counter) {
    Fragment_Channels fragment = new Fragment_Channels();
    Bundle args = new Bundle();
    args.putInt(ARG_COUNT, counter);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    fragmentsList = getActivity().getSupportFragmentManager().getFragments();

    if (getArguments() != null) {
        counter = getArguments().getInt(ARG_COUNT);
    }
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    if (view == null) {

        // Inflate the layout for this fragment
        view = inflater.inflate(R.layout.fragment_channels, container, false);

        recyclerViewFragmentChannel = view.findViewById(R.id.recyclerViewFragmentChannel);
        
        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {

            layoutManagerLandScape = new GridLayoutManager(view.getContext(), 5);
            recyclerViewFragmentChannel.setLayoutManager(layoutManagerLandScape);

           
        } else {
            layoutManagerPortrait = new GridLayoutManager(view.getContext(), 2);
            recyclerViewFragmentChannel.setLayoutManager(layoutManagerPortrait);
        }
    }
    return view;
}


@Override
public void onPause() {
    super.onPause();
    mBundleRecyclerViewState = new Bundle();
    state = layoutManagerPortrait.onSaveInstanceState();
}

@Override
public void onResume() {
    super.onResume();

    if ((recyclerViewFragmentChannel.getAdapter() == null)) {

    //Load data to recyclerview here
       
    } else {
        
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
               // if(state !=null)
                layoutManagerPortrait.onRestoreInstanceState(mBundleRecyclerViewState.getParcelable(KEY_RECYCLER_STATE));
            }
        }, 1000);
    }
}