自定义 Flutter 小部件以返回两个小部件以与 CustomScrollView / slivers 一起使用

Question

I have a Flutter CustomScrollView with the following structure:

body: CustomScrollView(
  slivers: <Widget>[
    MyCustomTitle(...),
    MyCustomSliverGrid(...)
    MyCustomTitle(...),
    MyCustomSliverGrid(...)
    MyCustomTitle(...),
    MyCustomSliverGrid(...)
    ...
  ],
),

MyCustomTitle extends StatelessWidget and in the build method returns a SliverToBoxAdapter widget, and the MyCustomSliverGrid widget extends StatelessWidget and in the build method returns a SliverGrid widget.

How can I implement a single Widget ( MyCustomSliverGridWithTitle ) that returns both the custom title and the custom SliverGrid? From the build method of a StatelessWidget I can only return a single Widget, not two.

Answer 1

You can bundle MyCustomTitle and MyCustomSliverGrid into one widget with MultiSliver .

class MyCustomSliverGridWithTitle extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MultiSliver(
      children: <Widget>[
        MyCustomTitle(...),
        MyCustomSliverGrid(...),
      ],
    );
  }
}