Flutter 编译报错 Error: The method DioHttpHeaders.add has fewer named arguments than those Context

1.报错问题：最近更新Android Studio 4.0 连同Flutter 一起更新，导致原有项目运行报错：

Error: The method 'DioHttpHeaders.add' has fewer named arguments than those
Context: This is the overridden method ('add'). void add(String name, Object value,...

解决方法：打开pubspec.yaml 文件修改 dio 版本号，更行为最新版本（鼠标指向版本号时，会提示最新的版本号）完美解决;

# The following adds the Cupertino Icons font to your application.# Use with the CupertinoIcons class for iOS style icons.cupertino_icons: ^0.1.3  更新一下最新版本#添加网络请求库dio: ^3.0.9 更新一下最新版本

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Flutter 编译报错 Error: The method DioHttpHeaders.add has fewer named arguments than those Context

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