在CustomScrollView中使用StreamBuilder和SliverLists

当然，这很容易，这里有一个代码示例：

    class SampleStreamBuilder extends StatelessWidget {      Stream<List<String>> loadData() async* {        await Future.delayed(Duration(seconds: 3));        yield List.generate(10, (index) => "Index $index");      }      @override      Widget build(BuildContext context) {        return Scaffold(          body: StreamBuilder<List<String>>( stream: loadData(), builder: (context, snapshot) {   return snapshot.hasData       ? CustomScrollView(slivers: [  SliverList(    delegate: SliverChildBuilderDelegate((context, index) {      return ListTile(        title: Text(snapshot.data[index]),      );    }, childCount: snapshot.data.length),  )],         )       : Center(child: CircularProgressIndicator(),         ); },          ),        );      }    }