Infinite Scroll Listener - Android

InfiniteScrollListener.java

public abstract class InfiniteScrollListener implements AbsListView.OnScrollListener {
    private int bufferItemCount = 10;
    private int currentPage = 0;
    private int itemCount = 0;
    private boolean isLoading = true;

    public InfiniteScrollListener(int bufferItemCount) {
        this.bufferItemCount = bufferItemCount;
    }

    public abstract void loadMore(int page, int totalItemsCount);

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        // Do Nothing
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount)
    {
        if (totalItemCount < itemCount) {
            this.itemCount = totalItemCount;
            if (totalItemCount == 0) {
                this.isLoading = true; }
        }

        if (isLoading && (totalItemCount > itemCount)) {
            isLoading = false;
            itemCount = totalItemCount;
            currentPage++;
        }

        if (!isLoading && (totalItemCount - visibleItemCount)<=(firstVisibleItem + bufferItemCount)) {
            loadMore(currentPage + 1, totalItemCount);
            isLoading = true;
        }
    }
}

YourActivity.java

// Attach the listener to the AdapterView onCreate
yourListView.setOnScrollListener(new InfiniteScrollListener(5) {
    @Override
    public void loadMore(int page, int totalItemsCount) {
        List<HashMap<String, String>> newData = loader.loadData();
        dataList.addAll(newData);
        adapter.notifyDataSetChanged();
    }
});