Dart SDK version conflit with dependencies of pubspec.yaml

user_13905804 0
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I have a Flutter app that is connected to firebase, and after this last update of flutter and Dart, I started getting these dependency errors:

The current Dart SDK version is 2.10.2.
Because my_app_one depends on firebase_messaging >=9.0.0-1.0.nullsafety.0 which requires SDK version >=2.12.0-0 <3.0.0, version solving failed.
pub get failed (1; Because my_app_onedepends on firebase_messaging >=9.0.0-1.0.nullsafety.0 which requires SDK version >=2.12.0-0 <3.0.0, version solving failed.)

I tried to research this error, I found some solutions, but they did not solve this case.

pubspec.yaml/ dependencies:

  firebase_analytics: ^7.1.1
  firebase_core: ^1.0.1
  firebase_crashlytics: ^1.0.0
  firebase_messaging: ^9.0.0

Flutter doctor:

[√] Flutter (Channel stable, 1.22.2, on Microsoft Windows [versão 10.0.19041.804], locale pt-BR)
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[√] Android Studio (version 4.0)
[√] VS Code (version 1.54.1)
[√] Connected device (1 available)

• No issues found!
firebase dart flutter
2 Answers

you need to update your environment SDK in your pubspec.yaml. It's actually

sdk: ">=2.10.2 <3.0.0"

Changing it to

sdk: ">=2.12.0 <3.0.0"

should solve the issue, but be aware that you may need to migrate your app to be compatible with null-safety. You can first check it by executing this command in the root folder of your app, where pubspec.yaml is:

dart pub outdated --mode=null-safety

You can find more information about migrating to null-safety with this guide: https://dart.dev/null-safety/migration-guide

user_82198320

I had a similar issue. I fixed it using these:

environment:
  sdk: ">=2.12.0-0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter


  firebase_core: ^1.0.0
  cloud_functions: ^1.0.0
  firebase_auth: ^1.0.0
  firebase_analytics: any
  firebase_storage: ^8.0.0
  cloud_firestore: ^1.0.0

by setting the version to any, it will find the version which resolves the conflicts

user_128282490
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