android - 当我将ListView放在列中时得到 “Another exception was thrown: RenderBox was not laid out”

Question

我最近在Column和SingleChildScrollView内部制作了一个ListView
但是它显示出诸如“NEEDS PAINT”之类的错误。.这是我的 body 代码

body: Container(
      child: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            ListView.builder(
              itemCount: 4,
              itemBuilder: (BuildContext context, int index) {
                Text("Hoi");
              },
            )
          ],
        ),
      ),
    ),

我想归还“Hoi” 4次..但是它向我显示了类似的内容

Another exception was thrown: RenderBox was not laid out: RenderRepaintBoundary#6c04f relayoutBoundary=up1 NEEDS-PAINT

Answer 1

您可以使用shrinkWrap的ListView属性。

ListView.builder(
        shrinkWrap: true,
        ...

更多信息: https://docs.flutter.io/flutter/widgets/ScrollView/shrinkWrap.html

并且不要忘记在 Widget中返回一个 itemBuilder

       itemBuilder: (BuildContext context, int index) {
            return Text("Hoi"); 
          },