defaultLayoutBuilder function
Implementation
Widget defaultLayoutBuilder(
Widget topChild, Key topChildKey, Widget bottomChild, Key bottomChildKey) {
return Stack(
alignment: AlignmentDirectional.centerStart,
clipBehavior: Clip.hardEdge,
children: <Widget>[
Positioned(
key: bottomChildKey,
left: 0.0,
top: 0.0,
right: 0.0,
child: bottomChild,
),
Positioned(
key: topChildKey,
child: topChild,
),
],
);
}