public View getHeaderAt(int position) {
        if (position == MATCHED_STICKIED_HEADER) {
            return mStickiedHeader;
        }

        try {
            return (View)getChildAt(position).getTag();
        } catch (Exception e) {
        }
        return null;
    }
Gets the header at an item position. However, the position must be that
of a HeaderFiller.

@param position Position of HeaderFiller.
@return Header View wrapped in HeaderFiller or null if no header was
        found.
Library/src/com/tonicartos/widget/stickygridheaders/StickyGridHeadersGridView.java