小编Viv*_*jee的帖子

我是这个框架的新手，并且无法显示 ListViewBuilder 项目。我在控制台中收到此错误

\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90 捕获异常通过渲染库 \xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\ x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\ xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\ x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\x90\xe2\x95\ x90\nRenderBox 未布局：RenderRepaintBoundary#f28ee relayoutBoundary=up14 NEEDS-PAINT\n'package:flutter/src/rendering/box.dart':\n断言失败：第 1785 行 pos 12：'hasSize'

class _ViewCartState extends State<ViewCart> {\n\n  List<dynamic> cartData;\n\n  @override\n  void initState() {\n    super.initState();\n    APIService apiService = new APIService();\n    apiService.apiCall().then((value) async {\n      setState(() {\n        cartData = value.data.result.cartData;\n        print(cartData);\n      });\n    });\n  }\n\n  @override\n  Widget build(BuildContext context) {\n    loadData();\n    var veg;\n    return Scaffold(\n      appBar: AppBar(\n        iconTheme: IconThemeData(\n          color: kHintColor, //change your color here\n        ),\n        title: Text("Cart Page", style: Theme.of(context).textTheme.bodyText1),\n      ),\n      body: Stack(\n              children: <Widget>[\n                SingleChildScrollView(\n …