Flutter | Dart : Target of URI does not exist

Make sure you have added the dependency to pubspec.yaml

dependencies:
  http: ^0.12.0

You will also need to:

flutter packages get

For any upcoming problem with importing packages from dart please go to official Dart website packages and search for needed package and you will find solution up there.

---

for your issue go to:

1. https://pub.dartlang.org/packages/http
2. Installing tap https://pub.dartlang.org/packages/http#-installing-tab-

3. follow guide steps:

   In pubspec.yaml file:@ dependencies

    dependencies:
        http: ^0.12.0
        flutter:
   

(NB: please make sure that http & flutter or any other attribute inside dependencies are aligned as above and they are at same line)

---

In terminal run below command:

$flutter packages get

You need to add the HTTP dependency to pubspec.yaml as per below.

 dependencies:
      flutter:
        sdk: flutter

      # The following adds the Cupertino Icons font to your application.
      # Use with the CupertinoIcons class for iOS style icons.
      cupertino_icons: ^0.1.2
      http: ^0.12.0

With the dependency added you then need to run the following command to update/install required packages:

flutter packages upgrade

Hope this helps