@Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
            int totalItemCount) {
        if (mScrollListener != null) {
            mScrollListener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
            scrollChanged(firstVisibleItem);
        }
    }
Get the currently stickied header.

@return Current stickied header.
Library/src/com/tonicartos/widget/stickygridheaders/StickyGridHeadersGridView.java