buildWrapper method

  1. @override
Widget buildWrapper(
  1. BuildContext context,
  2. Widget child
)
override

子类可重写此方法，为动画内容提供外层包装（如 Positioned 定位）

Subclasses can override to wrap animated content (e.g., with Positioned).

Implementation

@override
Widget buildWrapper(BuildContext context, Widget child) {
  return Positioned(bottom: 0, left: 0, right: 0, child: child);
}