IndexedStack constructor
Creates a Stack widget that paints a single child.
The index
argument must not be null.
Implementation
IndexedStack({
Key key,
AlignmentGeometry alignment = AlignmentDirectional.topStart,
TextDirection textDirection,
StackFit sizing = StackFit.loose,
this.index = 0,
List<Widget> children = const <Widget>[],
}) : super(key: key, alignment: alignment, textDirection: textDirection, fit: sizing, children: children);