Flutter Scaffold Code 突然开始报错

Question

由于返回脚手架，我的代码一直给我错误。这是我的脚手架代码:

 class _DashboardState extends State<Dashboard> {   @override   Widget
 build(BuildContext context) {
     
return Scaffold(
       
         drawer: Drawer(
            child: Column
            (children: <Widget>[
              AppBar(automaticallyImplyLeading: false,
         title: Text('Special Options'),
          backgroundColor: Colors.redAccent.shade400
         ),

这是我在调试时得到的错误代码

Context: Found this candidate, but the arguments don't match.
lib/ui/usertype.dart:29:24: Error: Too few positional arguments: 1 required, 0 given.

file:///C:/flutter/flutter/packages/flutter/lib/src/material/scaffold.dart:1: Context: Found this candidate, but the arguments don't match.
Compiler failed

Answer 1

Yiu 可能不小心修改了 Flutter 源代码。

您可以通过在您的 Flutter 安装目录中运行来检查

git status

它应该报告没有修改

在你的 Flutter 安装目录中修复运行

git clean -xfd
git stash save --keep-index
git stash drop
git pull
flutter doctor