How can I identify that RecyclerView's last item is visible on screen?

Question

I have one RecyclerView and I added list of data into the RecyclerView. I wanted to add more data in list, when last RecyclerView item is

Answer 1

If someone stumble across this post this is a quick and simple tutorial on how to do it:

All you need to do is:

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
        super.onScrollStateChanged(recyclerView, newState);
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        int visibleItemCount        = lm.getChildCount();
        int totalItemCount          = lm.getItemCount();
        int firstVisibleItemPosition= lm.findFirstVisibleItemPosition();

        // Load more if we have reach the end to the recyclerView
        if ( (visibleItemCount + firstVisibleItemPosition) >= totalItemCount && firstVisibleItemPosition >= 0) {
            loadMoreItems();
        }
    }
});

Then your loadMoreItems() should look something like this:

private void loadMoreItems() {
    // init offset=0 the frist time and increase the offset + the PAGE_SIZE when loading more items
    queryOffset = queryOffset + PAGE_SIZE;
    // HERE YOU LOAD the next batch of items
    List newItems = loadItems(queryOffset, PAGE_SIZE);

    if (newItems.size() > 0) {
        items.addAll(newItems);
        adapter.notifyDataSetChanged();
    }
}