Flutter http package does not exist

It is clear way to add http to flutter

1. Add this to your package’s pubspec.yaml file:

dependencies:
  http: ^0.12.0 // latest one might change

2. Install it
   You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

3. Import it
   Now in your Dart code, you can use:

import 'package:http/http.dart';

If you have done these 3 steps restart your code editor