我刚把我的Macbook设置为扑动显影，
所以我下载了flutter SDK，并把它放在我的文档中。之后，我在命令行中设置了path变量来使用flutter。
我执行命令flutter create todolist，这样我就实现了一个空白项目。
我还用Dart-Code设置了我的visual studio代码，这样我就有了正确的语法高亮，智能感知等。
所以当我打开visual studio代码时，它会突出显示导入方法，如下图所示:
这意味着它还会突出显示正确的类，从而完全难以理解它是否是一个真正的错误。
我已经执行了pub get和flutter包get，并正确地得到了所有内容。 我的路径变量都是正确的。
为什么它突出显示它无法找到“导入”包?
当前回答
I was using (goggle location picker (with much more customisation in functions and UI) ) so I copy this package(complete) and using in my app in one folder but since dart code analyser analyses one flutter project so I found that those which are referencing from inside of this package is not working then I copy only lib folder(of google location picker) in my original project folder and voila this worked for me. This solution took me a time of 3 days. I know this is not the question but it might help someone to save 3 days.
其他回答
我在跟随Flutter入门教程，VSCode找不到english_words的包，尽管它在pubspeck中显示。锁和包装。热重载不起作用。
为了让它工作，我停止实例并重新运行它-所以我不需要重新启动VSCode。
颤振包得到 重新启动Visual Studio代码
来源:https://flutter.dev/docs/development/packages-and-plugins/using-packages
Warning! This package referenced a Flutter repository via the .packages file that is no longer available. The repository from which the 'flutter' tool is currently executing will be used instead. running Flutter tool: /opt/flutter previous reference : /Users/Shared/Library/flutter This can happen if you deleted or moved your copy of the Flutter repository, or if it was on a volume that is no longer mounted or has been mounted at a different location. Please check your system path to verify that you are running the expected version (run 'flutter --version' to see which flutter is on your path).
检查flutter包的输出可以发现，在我的案例中，原因是由于移动了flutter sdk。
不只是重新启动vsCode，你可以在Windows中按⌘+r或CTRL+ r，这将重新加载vsCode。
让Dart-Code可靠地找到您的Flutter安装和使用它的最快方法是创建一个新的FLUTTER_ROOT环境变量，并将其设置为您的Flutter路径。
