How to implement load more recyclerview in android

Question

I want to implement load more in Recyclerview. Here is the code. The code is from github. https://gist.github.com/ssinss/e06f12ef66c51252563e

MainActivity code:

Answer 1

public abstract class LoadMoreAdapter extends RecyclerView.Adapter{
private LoadMoreListner loadMoreListner;
private boolean isLoading;
int vissibleThreshold = 5;

public LoadMoreAdapter(final LoadMoreListner loadMoreListner, RecyclerView recyclerView) {
    this.loadMoreListner = loadMoreListner;
    final LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    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 totalItemCOunt = linearLayoutManager.getItemCount();
            int lastVissibleItemPOs = linearLayoutManager.findLastVisibleItemPosition();
            if (!isLoading && totalItemCOunt<= lastVissibleItemPOs+vissibleThreshold){
                if (loadMoreListner!=null){
                    isLoading = true;
                    loadMoreListner.onLoadMore();
                }
            }
        }
    });
}
public void setLoaded(){
    isLoading =false;
}

}

Your adapter will extends to this LoadmoreAdapter

public interface LoadMoreListner {
void onLoadMore();

}

And in your activity

@Override
public void onLoadMore() {
    items.add(null);
    nameLoadMoreAdapter.notifyItemInserted(items.size()-1);
    loadNewData();
}

After populating list and here your loadnewData() will have this

items.remove(items.size()-1);
            nameLoadMoreAdapter.notifyItemRemoved(items.size());
            items.addAll(itemsArrayList);
            nameLoadMoreAdapter.notifyItemInserted(items.size());
            nameLoadMoreAdapter.setLoaded();

where itemsArrayList are of newdata