firebase - 添加 firebase 依赖后 Flutter 'Packages get' 失败

Question

我正在尝试将 Firebase 添加到我的 Flutter 应用中。但是，当我在 pubspec_yaml 中添加 firebase_core 依赖项并运行 Packages get 时，它会报错。

19-----dependencies:
20-----flutter:
21-----sdk: flutter
22-----firebase_core: ^0.2.5 

这是给出错误的代码。

Packages get 的输出:

C:\flutter\bin\flutter.bat --no-color packages get
Running "flutter packages get" in trial_one...                  
Error on line 21, column 5 of pubspec.yaml: A dependency may only have one source.
sdk: flutter
^^^^^^^^^^^^^^


pub get failed (65)
Process finished with exit code 65

我完全按照 Add Firebase to Flutter 上的说明进行操作地点。但我仍然收到此错误。

Answer 1

缩进实际上并不好，这是正确的:

dependencies:
  flutter:
    sdk: flutter
  firebase_core: ^0.3.1+1

希望对你有帮助!!