BottomSheet / SingleChildScrollView内部的ListView.builder上的呈现库异常

Question

我是新手，一直在尝试在ListView.builder / BottomSheet内创建SingleChildScrollView。外面有人知道我在做什么错吗？

////════════渲染库捕获异常 ══════════════════════════════════════════════════ following以下 在performLayout（）期间引发了断言： 'package：flutter / src / rendering / object.dart'：断言失败：行 1651 pos 12：'！_debugDoingThisLayout'：不正确。

代码

class AddMenuScreen extends StatefulWidget {
  @override
  _AddMenuScreenState createState() => _AddMenuScreenState();
}

class _AddMenuScreenState extends State<AddMenuScreen> {
  List<MenuWidget> listMenu = [];

  addMenu() {
    listMenu.add(new MenuWidget());
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      color: Color(0xff575757),
      child: Container(
        padding: EdgeInsets.all(20.0),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.only(
            topLeft: Radius.circular(30.0),
            topRight: Radius.circular(30.0),
          ),
        ),
        child: Column(

          children: <Widget>[
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
              child: Text(
                'Add items',
                style: TextStyle(
                    fontSize: 30.0,
                    color: Colors.blueAccent,
                    fontWeight: FontWeight.bold),
              ),
            ),
            Expanded(
              child: ListView.builder(
                  itemCount: listMenu.length,
                  shrinkWrap: true,
                  itemBuilder: (_, index) => listMenu[index]),
            ),
          ],
        ),
      ),
    );
  }
}

class MenuWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: TextField(
        decoration: InputDecoration(hintText: 'Altenativ'),
        autofocus: true,
//        textAlign: TextAlign.center,
      ),
    );
       }
     }