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

that package is part of flutter and should not show an error if you import it. To help you, you should post your relevant parts of the pubspec.yaml and .dart-File — Christian, Nov 24 '18 at 22:37
The package is not a part of flutter but it is distributed via pub. — Jonah Williams, Nov 25 '18 at 00:02

diegoveloper · Answer 1 · 2019-05-31T01:06:20.117

99

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

edited May 31 '19 at 01:06

answered Nov 25 '18 at 03:35

diegoveloper

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7

And don't for get to `pub get` or `flutter packages get` after saving. – Nate Bosch Nov 25 '18 at 04:21
[https://stackoverflow.com/questions/61037356/what-is-the-difference-between-flutter-packages-get-and-flutter-pub-get](apparently) `flutter pub` is just an alias to `flutter packages` – pfincent Jun 01 '22 at 13:29

score 21 · Answer 2 · edited Jan 28 '19 at 06:15

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

score 13 · Answer 3 · answered Aug 05 '19 at 17:46

13

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.

answered Aug 05 '19 at 17:46

Justin Buist

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2
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this worked for me after installing the package using `flutter pub add http` and imported it like this: `import 'package:http/http.dart' as http;` i still get compiler error, closed my folder and open it up again in Vs Code, error's gone and editor shows warning for unused import only. – Dids Apr 23 '22 at 09:17

score 10 · Answer 4 · answered Apr 01 '20 at 11:32

10

You need to import like this:

import 'package:http/http.dart' as http;

answered Apr 01 '20 at 11:32

artois

485
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13

score 5 · Answer 5 · edited May 10 '19 at 02:19

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

edited May 10 '19 at 02:19

Jared Burrows

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answered Mar 16 '19 at 01:54

Sam

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Sarthak Raval · Answer 6 · 2022-03-23T10:28:17.617

5

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

edited Mar 23 '22 at 10:28

answered Mar 23 '22 at 09:50

Sarthak Raval

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score 4 · Answer 7 · answered Mar 28 '19 at 07:01

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 .

score 3 · Answer 8 · answered Dec 06 '19 at 08:24

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.

score 2 · Answer 9 · answered Mar 03 '19 at 05:40

2

this worked for me:

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2
  http: any

then:

flutter doctor -v

Finally:

flutter packages get

answered Mar 03 '19 at 05:40

Diego Santa Cruz Mendezú

4,325
39
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score 2 · Answer 10 · answered Jun 10 '20 at 07:47

2

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;

answered Jun 10 '20 at 07:47

Bauroziq

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Mr vd · Answer 11 · 2020-06-29T09:14:07.307

0

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

edited Jun 29 '20 at 09:14

answered Jun 26 '20 at 14:19

Mr vd

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score 0 · Answer 12 · answered Sep 26 '20 at 11:51

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

score 0 · Answer 13 · answered Apr 16 '21 at 18:34

0

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;

answered Apr 16 '21 at 18:34

Sandeep Pareek

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score 0 · Answer 14 · answered Mar 06 '22 at 05:41

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.

score 0 · Answer 15 · answered Dec 21 '22 at 12:32

0

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

flutter pub add http

answered Dec 21 '22 at 12:32

SherAli Shaikh

1

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Dec 22 '22 at 19:03

MohammadSoori · Answer 16 · 2019-11-04T10:25:42.820

-1

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

edited Nov 04 '19 at 10:25

answered Sep 21 '19 at 19:45

MohammadSoori

2,120
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score -1 · Answer 17 · answered Jun 26 '20 at 13:40

-1

cupertino_icons: ^0.1.2

http: any

answered Jun 26 '20 at 13:40

Dinuwan Kalubowila

99
1
6

score -2 · Answer 18 · answered Jun 29 '19 at 23:21

-2

http: have to be align with the other dependencies.

answered Jun 29 '19 at 23:21

Frankely Hernandez Reyna

11
1

Your answer doesn't seem to help the OP. Please clarify and elaborate. – Alexandre Juma Jun 30 '19 at 00:40

score -2 · Answer 19 · answered Jul 02 '19 at 10:44

-2

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';

answered Jul 02 '19 at 10:44

Usman

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

19 Answers19

Add below to pubspec.yaml file

Linked