scroll method

@override void scroll(double? pixels, { bool animate = true, })

scroll +/- pixels or to an item

Implementation

@override
void scroll(double? pixels, {bool animate = true}) {

  // get the view
  GridViewState? view = findListenerOfExactType(GridViewState);

  // scroll specified number of pixels
  // from current position
  view?.scroll(pixels, animate: animate);
}