无法在Flutter应用中获取Firebase软件包

从官方入门教程到表格,我都做了一切 每当我尝试在SSLEngine engine = SSLContext.getDefault().createSSLEngine(); engine.setUseclientMode(true); 文件中添加软件包

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pubspec.ymal

遇到错误

  

第21行pubspec.yaml的第5列错误:依赖项可能只有一个来源。

dependencies:
  flutter:
sdk: flutter
firebase_auth:

这与我添加的内容相同

21 │ ┌     sdk: flutter
22 │ │     firebase_auth:
27 │ │   cupertino_icons: ^0.1.2
   │ └──^
pub get failed (65)
exit code 65

我的firebase_auth: ^0.14.0+5 输出如下

[√] Flutter(频道稳定,v1.9.1 + hotfix.6,在microsoft Windows [Version 10.0.18362.418],语言环境为美国)

flutter doctor -v

[√] Android工具链-为Android设备开发(Android SDK版本29.0.2)

• Flutter version 1.9.1+hotfix.6 at D:\C\flutter
• Framework revision 68587a0916 (7 weeks ago),2019-09-13 19:46:58 -0700
• Engine revision b863200c37
• Dart version 2.5.0

[√] Android Studio(3.5版)

• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-29,build-tools 29.0.2
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
• All Android licenses accepted.

[√]已连接设备(1个可用)

• Flutter plugin version 41.0.2
• Dart plugin version 191.8593
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

•找不到问题!

wyw521 回答:无法在Flutter应用中获取Firebase软件包

语法有问题:从firebase_auth删除退格键 在与cupertino相同的行中编写firebase ...请尝试以下操作:

dependencies:
  flutter:
    sdk: flutter
  firebase_auth:
  cupertino_icons: ^0.1.2
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