RxRecycerView.java

RxRecyclerView.scrollEvents(binding.recyclerView)
                .compose(bindUntilEvent(ActivityEvent.DESTROY))
                .map(scrollEvent -> {
                    boolean isBottom = false;
                    if (ConfigUtils.isOrientationPortrait(this)) {
                        isBottom = layoutManager.findLastCompletelyVisibleItemPositions(
                                new int[2])[1] >= mImages.size() - 4;
                    } else if (ConfigUtils.isOrientationLandscape(this)) {
                        isBottom = layoutManager.findLastCompletelyVisibleItemPositions(
                                new int[3])[2] >= mImages.size() - 4;
                    }
                    return isBottom;
                })
                .filter(isBottom -> !binding.refreshLayout.isRefreshing() && isBottom)
                .subscribe(recyclerViewScrollEvent ->{
                    if (refreshing) {
                        page = 0;
                        refreshing = false;
                    }
                    page += 1;
                    binding.refreshLayout.setRefreshing(true);
                    fetchGirlData();
                });