Flutter: How to resolve Error importing package:http/http.dart - dart

Question

I am very new to Flutter, and stuck at the following error:
package:http/http.dart That library is in a package that is not known.
Maybe you forgot to mention it in your pubspec.yaml file?
Please help in resolving this error.

Answer 1

Go to your pubspec.yaml file , and add the http dependency:
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
http: any
Remember, the indentation must be the same as 'flutter' or 'cupertino_icons'
And don't forget to run this command in your terminal :
flutter packages get

Answer 2

I had the same problem. You just have to add latest http dependencies in pubspec.yaml
Here is the full code,
dependencies:
flutter:
sdk: flutter
http: ^0.12.0+1
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.2
Don't forget to change verson no. of http
To check latest version of http click here
If you are running app directly from command line then you could also do:
with Flutter:
$ flutter packages get
with pub:
$ pub get

Answer 3

I've found that, when in VS Code, you might need to restart the editor to get it to see the new http module that 'pub get' pulled in. You can have your .dart code and pubspec.yaml exactly right but you still get the compiler/lint error.

Answer 4

You need to import like this:
import 'package:http/http.dart' as http;

Answer 5

add below to pubspec.ymel file
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
http: ^0.12.0+1
use flutter pub to find the latest version
call
flutter packages get

Answer 6

1.Install http package
flutter pub add http
2.check pubspec.yaml file
dependencies:
http: ^0.13.4
3.Import in file
import 'package:http/http.dart';
Reference

Answer 7

just got to pubspec.yaml file and tweak some changes in file
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
http:
under dependencies section just add http like in code description .
flutter will automatically resolve it and will add updated version of http .

Answer 8

You have to add the http dependency in the pubspec.yaml file as shown below:
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
http: ^0.12.0+2
Please take note of the indentation. After doing the above, run the below command in your terminal:
flutter packages get
As at the time of writing this, the latest http version is 0.12.0+2. You can learn more by visiting this link.

Answer 9

this worked for me:
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
http: any
then:
flutter doctor -v
Finally:
flutter packages get

Answer 10

1. Add this to your package's pubspec.yaml file:
dependencies:
http: ^0.12.1
2. install it :
$ flutter pub get
3. Now in your Dart code, you can use:
import 'package:http/http.dart' as http;

Answer 11

Add below to pubspec.yaml file
dependencies:
http: ^0.12.0+1
Or Just add http
dependencies:
http:
flutter will automatically used latest version of http .
Then use pub get

Answer 12

version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^1.0.0
http: ^0.12.2
dev_dependencies:
flutter_test:
sdk: flutter
flutter:
uses-material-design: true
assets:
- images/
try to update the sdk versions and then pub get or flutter pub get to get the packages get install

Answer 13

just add in pubspec.yaml
http: ^0.12.0+2
like as
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.3
http: ^0.12.0+2
and run in terminal
flutter pub get
finally add in class
import 'package:http/http.dart' as http;

Answer 14

When I got this issue, I just close the project from Android Studio (File -> Close Project). And then open it again.
That works for me.
Simply just Restart the project.
But Make sure to add the certain dependency to the pubspec.yaml file and do pub get.

Answer 15

-Just run this below command in your project directory to install http module
flutter pub add http

Answer 16

You first find 'dependencies:' in pubspec.yaml
then under 'dependencies:' type http: ^0.12.0+2 and then press ctrl + s to run get packages.
sample:
dependencies:
http: ^0.12.0+2
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

Answer 17

cupertino_icons: ^0.1.2
http: any

Answer 18

http:
have to be align with the other dependencies.

Answer 19

I had the same issue although I had the latest http package in Pubspec.yaml file. This error was still in there I did these 2 steps and error was resolved.
Remove import 'dart:_http'; if it is there
Add import 'dart:convert';