endlessScroll.java

public class EndlessScrollListener implements OnScrollListener {
	
	private int visibleThreshold = 20;
	private int currentPage = 0;
	
	@Override
	public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
	}
	
	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
		if (scrollState == SCROLL_STATE_IDLE) {
			if (listView.getLastVisiblePosition() >= listView.getCount() - visibleThreshold) {
				currentPage++;
				downloadRecordsTask.setPage(currentPage);
				downloadRecordsTask.execute();
			}
		}
	}

}