Question

创建了全新的扑动项目，除了以外没有变化添加到yaml：

dependencies:
  flutter:
    sdk: flutter
  firebase_core: "0.2.3"

＆＃34>＆＃34>包裹得到＆＃34;重建项目在GeneratedPluginRegistrant

中出错

**Error:(4, 40) java: package io.flutter.plugins.firebase.core does not exist
Error:(14, 5) java: cannot find symbol
  symbol:   variable FirebaseCorePlugin
  location: class io.flutter.plugins.GeneratedPluginRegistrant
Information:javac 1.8.0_131 was used to compile java sources
Information:5/30/2018 7:18 AM - Compilation completed with 2 errors and 0 warnings in 2 s 101 ms**

颤抖的医生

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel beta, v0.4.4, on Microsoft Windows [Version 10.0.17134.48], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[√] Android Studio (version 3.1)
[√] IntelliJ IDEA Community Edition (version 2018.1)
[!] VS Code, 64-bit edition (version 1.23.1)
[√] Connected devices (1 available)

Answer 1

您在版本声明中缺少^符号。正确的方法是，

<强> firebase_core: "^0.2.3"

Answer 2

java：包io.flutter.plugins.firebase.core不存在这是一个Java类路径错误。只需添加到类路径

找不到yaml中的firebase_core

2 个答案: