将抽象StatelessWidget转换为抽象StatefulWidget

Question

如何将abstract MyStatelessWidget转换为StatefulWidget小部件？

abstract class MyStatelessWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container();//Some abstraction here
  }
}

abstract class MyWidget extends MyStatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Placeholder(),
        super.build(context),
      ],
    );
  }
}

我的MyStatelessWidget包含许多UI抽象，包括动画滚动收听和...

Answer 1

我投了反对票:因为StatefulWidget和StatelessWidget是不同的，你使用了错误的StatelessWidget函数。您可以将StatelessWidget转换为StatefulWidget。

你的答案是：

abstract class MyStatefulWidget extends StatefulWidget {
  @override
  MyState createState();
}
abstract class MyState<T extends MyStatefulWidget> extends State<T> {
  @override
  Widget build(BuildContext context) {
    return Container();//Some abstraction here
  }
}

abstract class MyWidget extends MyStatefulWidget {}

abstract class MyCurrentState extends MyState<MyWidget> {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Placeholder(),
        super.build(context),
      ],
    );
  }
}