private static boolean canAdapterViewScroll(AdapterView lv) {
/* Force it to layout it's children */
if (lv.getLastVisiblePosition() == -1) return false;
/* We can scroll if the first or last item is not visible */
boolean firstItemVisible = lv.getFirstVisiblePosition() == 0;
boolean lastItemVisible = lv.getLastVisiblePosition() == lv.getCount() - 1;
if (firstItemVisible && lastItemVisible && lv.getChildCount() > 0) {
/* Or the first item's top is above or own top */
if (lv.getChildAt(0).getTop() < lv.getPaddingTop()) return true;
/* or the last item's bottom is beyond our own bottom */
return lv.getChildAt(lv.getChildCount() - 1).getBottom()
> lv.getHeight() - lv.getPaddingBottom();
}
return true;
}
