RecyclerView OnScrollListener() Issue

Question

I have around 32 records in json, I am using RecyclerView to show them and I have implemented OnScrollListener(...)

Question

I started an Activity, I fetched all 32 records, now when I do scroll, why I am again getting same 32 records again and again, whenever I do scroll, here is my implementation of OnScrollListener()

public void initializeOnScrollForRecyclerView() {
        mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {

                int visibleItemCount = recyclerView.getLayoutManager().getChildCount();
                int totalItemCount = recyclerView.getLayoutManager().getItemCount();
                int pastVisiblesItems = ((LinearLayoutManager) recyclerView.getLayoutManager()).findFirstVisibleItemPosition();

                if (!isLoading) {
                    if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) {
                        isLoading = true;
                        mPostPresenter.loadPosts(false);
                    }
                }
            }
        });
    }

Answer 1

Here's another way to trigger something when last item is reached

@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {

    //When last item is reached
    if(position == yourList.size() - 1){
        loadMoreMessages();
    }
  }

public abstract void loadMoreMessages();

Answer 2

You are using this

 if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) 

Which means once you have viewed 22 records you are loading again. And while loading again you are getting same data and appending it to your list.

I can see that you are using RXjava. When you are subscribing in loadPost check what data your observable is emitting. i think its emitting the same data again i.e your 32 records and those records are added again and this is an endless loop.