buildCustom method

  1. @override
Widget buildCustom({
  1. ChildWidgetBuilder? childBuilder,
  2. required BuildContext context,
  3. required JsonWidgetData data,
  4. Key? key,
})
override

Custom builder that subclasses must override and implement to return the actual Widget to be placed on the tree.

Implementation

@override
Widget buildCustom({
  ChildWidgetBuilder? childBuilder,
  required BuildContext context,
  required JsonWidgetData data,
  Key? key,
}) {
  var firstChild = getChild(data, index: 0);
  var secondChild = getChild(data, index: 1);
  assert(
    data.children?.length == 2,
    '[JsonAnimatedCrossFadeBuilder] only supports exactly two children.',
  );

  return _JsonAnimatedCrossFade(
    builder: this,
    childBuilder: childBuilder,
    data: data,
    firstChild: firstChild,
    key: key,
    secondChild: secondChild,
  );
}