DecoratedBoxTransition constructor Null safety

const DecoratedBoxTransition(
  1. {Key? key,
  2. required Animation<Decoration> decoration,
  3. DecorationPosition position = DecorationPosition.background,
  4. required Widget child}
)

Creates an animated DecoratedBox whose Decoration animation updates the widget.

The decoration and position must not be null.

See also:

Implementation

const DecoratedBoxTransition({
  super.key,
  required this.decoration,
  this.position = DecorationPosition.background,
  required this.child,
}) : assert(decoration != null),
     assert(child != null),
     super(listenable: decoration);