flutter - 如何实现条状嵌套？包含条子列表的条子

Question

SliverList是一个包含盒子小部件的小条。是否有包含条子小部件的条子？

我正在尝试嵌套flutter_sticky_headers来创建时间轴，但是SliverStickyHeader仅接受单个条作为参数(请参阅monthSlivers()中的注释)。

class HomeView extends StatelessWidget {
  final HomeViewModel viewModel;

  HomeView(this.viewModel);

  List<Widget> entryTiles(List<EntryTileViewModel> entryVMs) {
    return entryVMs.map((entryVM) => EntryTile(viewModel: entryVM)).toList();
  }

  List<Widget> daySlivers(List<DaySection> daySections) {
    return daySections.map((daySection) {
      var entries = entryTiles(daySection.entryVMs);
      return SliverStickyHeader(
        overlapsContent: true,
        header: DayHeader(
          viewModel: DayHeaderViewModel(date: daySection.date),
        ),
        sliver: SliverList(
          delegate: SliverChildBuilderDelegate(
                (context, i) => entries[i],
            childCount: entries.length,
          ),
        ),
      );
    }).toList();
  }

  List<Widget> monthSlivers() {
    return viewModel.monthSections.map((monthSection) {
      var days = daySlivers(monthSection.daySections);
      return SliverStickyHeader(
        header: MonthHeader(
          viewModel: MonthHeaderViewModel(date: monthSection.date),
        ),
        sliver:,// THIS IS WHERE I WANT TO PUT DAYSLIVERS().
      );
    }).toList();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: CustomScrollView(
        slivers: monthSlivers(),
      ),
    );
  }
}

Answer 1

我现在在我的项目中使用这个

class SliverSection extends StatelessWidget {
  final List<Widget> slivers;

  const SliverSection({Key key, this.slivers}) : super(key: key);

  @override
  Widget build(BuildContext context) {
   return  SliverToBoxAdapter(
     child: ShrinkWrappingViewport(
       offset: ViewportOffset.zero(),
       slivers: slivers,
     ),
   );
  }
}

我没有尝试过会影响性能