GuidedStepSupportFragment no scroll effect example

package ch.andeo.dev.tvplayground;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;

import androidx.annotation.NonNull;
import androidx.leanback.app.GuidedStepSupportFragment;
import androidx.leanback.widget.GuidanceStylist;
import androidx.leanback.widget.GuidedAction;
import androidx.recyclerview.widget.RecyclerView;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

public class SampleStepFragment extends GuidedStepSupportFragment {

    private static final String TAG = "SampleStepFragment";

    @NonNull
    @Override
    public GuidanceStylist.Guidance onCreateGuidance(Bundle savedInstanceState) {
        String title = "Title";
        String breadcrumb = "Breadcrumb";
        String description = "Description";
        Drawable icon = getActivity().getDrawable(R.drawable.app_icon_your_company);

        return new GuidanceStylist.Guidance(title, description, breadcrumb, icon);
    }

    @Override
    public void onCreateActions(@NonNull List<GuidedAction> actions, Bundle savedInstanceState) {

        addAction(actions, GuidedAction.ACTION_ID_CONTINUE, "Action1");
        addAction(actions, GuidedAction.ACTION_ID_CANCEL, "Action2");

        // Run code delayed on mainThread (any other/better method can/should be used)
        // It's delayed because if focus scroll is disabled, the list will stick to the top of the layout
        new Handler(Looper.getMainLooper()).postDelayed(this::disableFocusScroll, 500);
    }

    private void disableFocusScroll() {
        RecyclerView.LayoutManager layoutManager = SampleStepFragment.this.getGuidedActionsStylist().getActionsGridView().getLayoutManager();
        try {
            Method method = layoutManager.getClass().getMethod("setFocusScrollStrategy", int.class);
            method.invoke(layoutManager, 1 /* FOCUS_SCROLL_ITEM */);
        } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
            Log.e(TAG, "disableFocusScroll: ", e);
        }
    }

    private void addAction(List<GuidedAction> actions, long id, String text) {
        actions.add(new GuidedAction.Builder(this.getContext()).title(text).clickAction(id).build());
    }

}