Listview 水平视口被赋予无限高

Listview 水平视口被赋予无限高,listview,flutter,dart,carousel,Listview,Flutter,Dart,Carousel,我想在“body:”部分的列下查看旋转木马,但收到以下错误: performResize期间引发了以下断言: 水平视口被赋予无限高 视口在横轴上展开以填充其容器,并约束其子视口以匹配其在横轴上的范围。在本例中,为水平视口提供了无限的垂直空间来展开。 导致错误的相关小部件是: 列表视图file:///Users/ahmed/AndroidStudioProjects/flutter_app_service2/lib/screens/home/profile_list.dart:27:21 引发异常

我想在“body:”部分的列下查看旋转木马,但收到以下错误: performResize期间引发了以下断言:

水平视口被赋予无限高

视口在横轴上展开以填充其容器,并约束其子视口以匹配其在横轴上的范围。在本例中,为水平视口提供了无限的垂直空间来展开。 导致错误的相关小部件是:

列表视图file:///Users/ahmed/AndroidStudioProjects/flutter_app_service2/lib/screens/home/profile_list.dart:27:21 引发异常时,这是堆栈:

0 RenderViewport.performResize。包:颤振/src/rendering/viewport.dart:1289:15 1 RenderViewport.performResize包:flatter/src/rendering/viewport.dart:1301:6 2 RenderObject.layout包:flift/src/rendering/object.dart:1746:9 3 RenderProxyBoxMixin.performLayout包:颤振/src/rendering/proxy_盒。dart:110:13 4 RenderObject.layout包:flift/src/rendering/object.dart:1767:7 。。。 引发异常时正在处理以下RenderObject:RenderViewportd699b需要-LAYOUT需要-PAINT需要-COMPOSITING-BITS-UPDATE ... 需要合成 ... parentData:可以使用大小
... 约束:BoxConstraints0.0我只需用SizedBox小部件包装ProfileList并给它一个适当的高度,就找到了解决方案:

body: Column(
      children: <Widget>[
        SizedBox(height: 500, child: ProfileList()),
      ],
    ),
给ProfileList指定一个区域很简单,这样就可以正确地查看它了

返回脚手架 主体:容器 宽度:double.infinity, 高度:双无限, child:ProfileList, , ,
class _ProfileListState extends State<ProfileList> {
@override
Widget build(BuildContext context) {
final profiles = Provider.of<List<Profile>>(context);

profiles.forEach((profile) {
  print(profile.firstName);
  print(profile.lastName);
  print(profile.country);
  print(profile.city);
  print(profile.imgUrl);
});

return ListView.builder(
  scrollDirection: Axis.horizontal,
  itemBuilder: (context, index) {

  },
  itemCount: profiles.length,
);
}
}
class ProfileCarousel extends StatelessWidget {
final Profile profile;
ProfileCarousel({this.profile});
@override
Widget build(BuildContext context) {
return Container(
  margin: EdgeInsets.all(10.0),
  width: 210.0,
  child: Stack(
    alignment: Alignment.topCenter,
    children: <Widget>[
      Container(
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(10.0),
          boxShadow: [
            BoxShadow(
              color: Colors.black26,
              offset: Offset(0.0, 2.0),
              blurRadius: 6.0,
            ),
          ],
        ),
        child: Stack(
          children: <Widget>[
            Hero(
              tag: profile.imgUrl,
              child: ClipRRect(
                borderRadius: BorderRadius.circular(10.0),
                child: Image(
                  height: 180.0,
                  width: 180.0,
                  image: NetworkImage(profile.imgUrl),

                ),
              ),
            ),
            Positioned(
              left: 10.0,
              bottom: 10.0,
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: <Widget>[
                  Text(
                    profile.firstName,
                    style: TextStyle(
                        fontWeight: FontWeight.w600,
                        fontSize: 24.0,
                        letterSpacing: 1.2,
                        color: Colors.white),
                  ),
                  Row(
                    children: <Widget>[
                      Icon(
                        Icons.arrow_upward,
                        size: 10.0,
                        color: Colors.white,
                      ),
                      SizedBox(width: 5.0),
                      Text(
                        profile.city,
                        style: TextStyle(color: Colors.white),
                      ),
                    ],
                  )
                ],
              ),
            )
          ],
        ),
      )
    ],
  ),
);
}
}
body: Column(
      children: <Widget>[
        SizedBox(height: 500, child: ProfileList()),
      ],
    ),