DoruAdryan

class TopStickyItemDecoration : ItemDecoration() {

    // for logging purposes only (avoid multiple logs with same values).
    private var lastChildTop: Int = -1

    override fun onDraw(c: Canvas, parent: RecyclerView, state: RecyclerView.State) {
        if (state.itemCount <= 0) return
        val lm = requireNotNull(parent.layoutManager) as LinearLayoutManager
        require(lm.orientation == VERTICAL)

DoruAdryan

public class AnActivity extends FragmentActivity {

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

		requestWindowFeature(Window.FEATURE_NO_TITLE);

		setContentView(R.layout.act_main);