A callback listener to notify when item visibility change.

OnItemVisibleChangeListener.java

public abstract class OnItemVisibleChangeListener extends RecyclerView.OnScrollListener {
    private static final String TAG = OnItemVisibleChangeListener.class.getSimpleName();

    private int mFirstVisibleItemPosition = RecyclerView.NO_POSITION;
    private int mFirstCompletelyVisibleItemPosition = RecyclerView.NO_POSITION;
    private int mLastVisibleItemPosition = RecyclerView.NO_POSITION;
    private int mLastCompletelyVisibleItemPosition = RecyclerView.NO_POSITION;

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        if (recyclerView != null && recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
            LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

            int firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition();
            int firstCompletelyVisibleItemPosition = layoutManager.findFirstCompletelyVisibleItemPosition();
            int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
            int lastCompletelyVisibleItemPosition = layoutManager.findLastCompletelyVisibleItemPosition();

            if (mFirstVisibleItemPosition != firstVisibleItemPosition) {
                mFirstVisibleItemPosition = firstVisibleItemPosition;
                onFirstVisibleItemChange(recyclerView, mFirstVisibleItemPosition);
            }
            if (mFirstCompletelyVisibleItemPosition != firstCompletelyVisibleItemPosition) {
                mFirstCompletelyVisibleItemPosition = firstCompletelyVisibleItemPosition;
                onFirstCompletelyVisibleItemChange(recyclerView, mFirstCompletelyVisibleItemPosition);
            }
            if (mLastVisibleItemPosition != lastVisibleItemPosition) {
                mLastVisibleItemPosition = lastVisibleItemPosition;
                onLastVisibleItemChange(recyclerView, mLastVisibleItemPosition);
            }

            if (mLastCompletelyVisibleItemPosition != lastCompletelyVisibleItemPosition) {
                mLastCompletelyVisibleItemPosition = lastCompletelyVisibleItemPosition;
                onLastCompletelyVisibleItemChange(recyclerView, mLastCompletelyVisibleItemPosition);
            }
        }
    }

    public void onFirstVisibleItemChange(RecyclerView recyclerView, int position) {}

    public void onFirstCompletelyVisibleItemChange(RecyclerView recyclerView, int position) {}

    public void onLastVisibleItemChange(RecyclerView recyclerView, int position) {}

    public void onLastCompletelyVisibleItemChange(RecyclerView recyclerView, int position) {}
}