ScrollableGrid({Key key, double initialScrollOffset, ScrollListener onScrollStart, ScrollListener onScroll, ScrollListener onScrollEnd, SnapOffsetCallback snapOffsetCallback, Key scrollableKey, @required GridDelegate delegate, Iterable<Widget> children: const [] })

Creates a vertically scrollable grid.

The delegate argument must not be null.

Source 

ScrollableGrid({
  Key key,
  this.initialScrollOffset,
  this.onScrollStart,
  this.onScroll,
  this.onScrollEnd,
  this.snapOffsetCallback,
  this.scrollableKey,
  @required this.delegate,
  this.children: const <Widget>[],
}) : super(key: key) {
  assert(delegate != null);
}