如何解决 flutter 中 ListView.Builder 小部件中的“RenderBox was not layout:”？

Question

我在 Expanded 小部件中使用 ListView.Builder，但它是通过异常

RenderFlex children have non-zero flex but incoming height constraints are unbounded.

RenderBox was not laid out: RenderRepaintBoundary#508c1 NEEDS-LAYOUT NEEDS-PAINT
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1696 pos 12: 'hasSize' 

名为LogTimeline ListView.builder 小部件

Widget build(BuildContext context) {
    return Expanded(
      child: ListView.builder(
        scrollDirection: Axis.vertical,
        shrinkWrap: true,
        itemCount: timelineList.length,
        itemBuilder: (context, index) {
          return Container(
            child: Row(
              children: [
                Column(
                  children: [
                    Container(),
                    Container(),
                    Container(),
                  ],),
              ],),
          ),}
      ),),}

使用的LogTimeline小部件

  Wrap(
        children: [
          LogHeader(
            headerTitle: "Overtime log",
          ),
          LogTimeline(
            timelineList: overtimeList,
          ),
        ],
      )

当 ListView.builder 在 wrap widget 中使用时，它显示“Bottom OverFlowed” 我该如何解决这个异常，为什么会出现这个异常，

完整代码链接

Answer 1

尝试删除扩展小部件并查看