Flutter | Dart : Target of URI does not exist

Question

I am making my first Application to build an Android App with Flutter. I am using Android Studio as IDE. The problem is when I import the http package:

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

I get an error :

error: Target of URI doesn't exist: 'package:http/http.dart'. (uri_does_not_exist at [flutter_crypto] lib\home_page.dart:3)

That's my code :

  Future<List> getCurrencies() async{
    String cryptoUrl = "https://api.coinmarketcap.com/v1/ticker/?limit=50";
    http.Response response = await http.get(cryptoUrl);
    return JSON.decode(response.body);
  }

Thanks,

seems like a duplicate https://stackoverflow.com/q/44909653/10409567 — griffins, Aug 17 '19 at 17:38

score 32 · Accepted Answer · answered Dec 28 '18 at 09:05

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

with vs code you may need to restart the ide as well at the end — Hom Bahrani, Aug 30 '19 at 11:43

Richard Heap · Answer 2 · 2019-01-11T23:22:16.467

8

Make sure you have added the dependency to pubspec.yaml

dependencies:
  http: ^0.12.0

You will also need to:

flutter packages get

edited Jan 11 '19 at 23:22

answered Dec 27 '18 at 18:33

Richard Heap

48,344
9
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Ahmed Saied · Answer 3 · 2019-01-04T07:07:55.467

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:

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

score 0 · Answer 4 · answered Apr 04 '21 at 03:21

0

run: dart pub --trace get --no-precompile in android srudio Terminal

answered Apr 04 '21 at 03:21

Alireza Ebrahimi

1
1

Flutter | Dart : Target of URI does not exist

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