Visual Studio Code - Target of URI doesn't exist 'package:flutter/material.dart'

I've just set up my Macbook for flutter development,

So I downloaded flutter SDK, and placed it in my Documents. After, I set up my path variable to work with flutter in my command line.

I execute the command flutter create todolist so I achieve a blank project.

I also set up my visual studio code with Dart-Code so I have the proper syntax highlight, IntelliSense, etc.

So when I open visual studio code, it highlights the import method, like the following image:

This means that it also highlights the classes that are correct, making it completely hard to understand if it's a real error or not.

I have executed both pub get and flutter packages get and got everything correctly. I have my path variables all correctly.

Why is it highlighting it cannot find that 'import' package?

Solution 1:

Restarting Visual Studio Code after

flutter pub get

resolved the error messages for me.

source: https://flutter.dev/docs/development/packages-and-plugins/using-packages

Solution 2:

flutter clean

flutter packages get

flutter packages upgrade ( Optional - use if you want to upgrade packages )

Restart Android Studio or Visual Studio

Solution 3:

Author of the Dart Code plugin here! From the screenshot, I would say this is because your flutter project is in a sub-folder of the folder open in Code. We only scan the opened-folder to check whether it's a Flutter project - which then changes the SDK we launch and also enables the Flutter functionality (like the daemon and debugger).

You should re-open the "todo" folder directly.

If you want to have multiple projects open together, use multi-root workspaces, since Dart Code is multi-root-aware and will check each of the folders in the workspace when deciding if it needs to enable Flutter functionality.

Update

This case should be better supported in the Dart plugin now, so opening the immediate parent folder of a Flutter project should work as expected.