Column constructor

Column({Key key, MainAxisAlignment mainAxisAlignment: MainAxisAlignment.start, MainAxisSize mainAxisSize: MainAxisSize.max, CrossAxisAlignment crossAxisAlignment: CrossAxisAlignment.center, TextDirection textDirection, VerticalDirection verticalDirection: VerticalDirection.down, TextBaseline textBaseline, List<Widget> children: const [] })

Creates a vertical array of children.

The direction, mainAxisAlignment, mainAxisSize, crossAxisAlignment, and verticalDirection arguments must not be null. If crossAxisAlignment is CrossAxisAlignment.baseline, then textBaseline must not be null.

The textDirection argument defaults to the ambient Directionality, if any. If there is no ambient directionality, and a text direction is going to be necessary to disambiguate start or end values for the crossAxisAlignment, the textDirection must not be null.

Implementation 

Column({
  Key key,
  MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start,
  MainAxisSize mainAxisSize = MainAxisSize.max,
  CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center,
  TextDirection textDirection,
  VerticalDirection verticalDirection = VerticalDirection.down,
  TextBaseline textBaseline,
  List<Widget> children = const <Widget>[],
}) : super(
  children: children,
  key: key,
  direction: Axis.vertical,
  mainAxisAlignment: mainAxisAlignment,
  mainAxisSize: mainAxisSize,
  crossAxisAlignment: crossAxisAlignment,
  textDirection: textDirection,
  verticalDirection: verticalDirection,
  textBaseline: textBaseline,
);