How do I set up icons instead of letters?

    View root = inflater.inflate(R.layout.fragment_gallery, container, false);

    galleryViewModel =
            new ViewModelProvider(this).get(GalleryViewModel.class);

    binding = FragmentGalleryBinding.inflate(inflater, container, false);


    smartTabLayout = root.findViewById(R.id.viewpagertab);
    viewPager = root.findViewById(R.id.viewpager);
    tabStrip = root.findViewById(R.id.tab_icon);




    //adaptar abas
    FragmentPagerItemAdapter adapter = new FragmentPagerItemAdapter(
            getActivity().getSupportFragmentManager(),
            FragmentPagerItems.with(getActivity())
                    .add("TUDO", TodosFragment.class)
                    .add("cima", TopFragment.class)
                    .add("selva", JGFragment.class)
                    .add("meio", MidFragment.class)
                    .add("baixo", ADCFragment.class)
                    .add("baixo1", SUPFragment.class)
                    .create()


    );
    viewPager.setAdapter( adapter );
    smartTabLayout.setViewPager( viewPager );



    return root;
}
@Override
public void onDestroyView() {
    super.onDestroyView();
    binding = null;
}