是否可以在CustomScrollView中使用ListView.builder? [英] Is it possible to use ListView.builder inside of CustomScrollView?

问题描述

是否可以在 CustomScrollView 内使用 ListView.builder (或类似的东西)?我有这样的 CustomScrollView :

Is it possible to use ListView.builder (or something similar) inside of a CustomScrollView? I have a CustomScrollView like this:

return Scaffold(
  body: CustomScrollView(
    slivers: [
      SliverAppBar(...),
      SliverList(delegate: SliverChildListDelegate(children))
    ],
  ),
);

这很好用，但是在我的实际情况下，列表可能包含成千上万个项目，因此我不想将它们全部传递给 SliverChildListDelegate .我想使用 ListView.builder (或类似的东西)在滚动到视图中时构建项目.我期望在 SliverList 或 SliverChildListDelegate 上有一个 .builder 构造函数，但我看不到类似的东西.我想念什么吗?

This works great, but in my actual scenario the list could have thousands of items, so I do not want to pass them all in to SliverChildListDelegate. I want to use ListView.builder (or something similar) to build the items as they are scrolled into view. I was expecting there to be a .builder constructor on either SliverList or SliverChildListDelegate but I don't see anything like that. Am I missing something?

推荐答案

SliverList 的 delegate 参数不一定是 SliverChildListDelegate .

您还可以使用 SliverChildBuilderDelegate 来实现 ListView.builder

SliverList(delegate: SliverChildBuilderDelegate((context, index) {
  return Container();
}));

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