VSCode dart analyzer stopped recognizing flutter/dart code

Question

I have been using VSCode for flutter development without issue, then today all of a sudden the dart analyzer is complaining that the majority of the classes are undefined, or targets do not exists.

Has anyone seen this before?

I have restarted VSCode, restarted computer, uninstalled flutter/dart plugins, ran flutter doctor with no issues...I am out of ideas.

VSCode Issues

Answer 1

Go to pubspec.yaml, right click and do Get Packages. It seems to work for me all the time.

Answer 2

I got this problem too then I reinstalled dart and flutter plugin from androod studio and it's fixed.