ExpandedViewport constructor Null safety

ExpandedViewport(
  1. {Key? key,
  2. AxisDirection? axisDirection = AxisDirection.down,
  3. AxisDirection? crossAxisDirection,
  4. double? anchor = 0.0,
  5. ViewportOffset? offset,
  6. Key? center,
  7. double? cacheExtent = 1,
  8. List<Widget>? slivers = const <Widget>[]}
)

Implementation

ExpandedViewport({
  Key? key,
  AxisDirection? axisDirection = AxisDirection.down,
  AxisDirection? crossAxisDirection,
  double? anchor = 0.0,
  ViewportOffset? offset,
  Key? center,
  double? cacheExtent = 1,
  List<Widget>? slivers = const <Widget>[],
}) : super(
          key: key,
          slivers: slivers!,
          axisDirection: axisDirection!,
          crossAxisDirection: crossAxisDirection,
          anchor: anchor!,
          offset: offset!,
          center: center,
          cacheExtent: cacheExtent);