(WIP) RecyclerView GridLayout InfiniteScroll

Fragment.java

int gridColumns = 4;
int visibleThreshold = 3;
int limit = 40
myObject apiResourceList = Constants.API_URL + "pokemon/?limit=" + limit;
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RecyclerView.OnScrollListener paginationScrollListener = new RecyclerView.OnScrollListener() {
        int gridSpan, pastVisibleItems, lastVisibleItem, visibleItemCount, totalItemCount;

        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            //works well with linearlayoutmanager
            if(dy > 0){//scroll down
                //but for a gridlayout because the spancount
                //gridSpan = gridLayoutManager.getSpanCount();
                visibleItemCount = gridLayoutManager.getChildCount();//current # of childs
                totalItemCount = gridLayoutManager.getItemCount();//# of items
                pastVisibleItems = gridLayoutManager.findFirstVisibleItemPosition();
                lastVisibleItem = gridLayoutManager.findLastVisibleItemPosition();

                if (apiResourceList.getNext() != null) {
                    //visibleItemCount + pastVisibleItems
                    if ((lastVisibleItem + visibleThreshold) >= totalItemCount) {

                        new Handler().postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                mPresenter.onLoadList(apiResourceList.getNext());//url
                            }
                        },2000);//wait two seconds

                    }

                }

            }

        }
    };

Presenter.java

    @Override
    public void onLoadList(final String url) {

        Observable<ApiResourceList> observable = mModel.getPkmnListPagination(url)
                .observeOn(AndroidSchedulers.mainThread())
                //map?? i need the result array of response but at the same time "ApiResourceList" object
                .debounce(400L, TimeUnit.MILLISECONDS);//because the rv scroll listener

        subscription = observable.subscribe(new Observer<ApiResourceList>() {
            @Override
            public void onCompleted() {
                Log.e("TeamBuildPresenter", "First observable complete " + url);
                mView.hideProgress();
            }

            @Override
            public void onError(Throwable e) {
                mView.showListPlaceholder();
                mView.hideProgress();
            }

            @Override
            public void onNext(ApiResourceList result) {
                mView.bindDataList(result);
            }
        });

    }