public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
int lastVisibleItem = mLayoutManager.findLastVisibleItemPosition();
int totalItemCount = mLayoutManager.getItemCount();
if (lastVisibleItem >= totalItemCount - 4 && dy > 0) {
if (mState == STATE_NONE && mAdapter != null && mAdapter.getDataSize() > 0) {
loadMore();
}
}
};
