配置项目“：firebase_database”时出现问题。（颤振）

Question

我有这个错误，请告诉我解决方案是什么。它显示无法从缓存中加载构建文件“C:\src\flutter.pub-cache\hosted\pub.dartlang.org\firebase_database-6.0.0\android\build.gradle”的编译类。我不确定是什么导致了错误，因为我所有的依赖项都在最新版本中。

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':firebase_database'.
> Could not load compiled classes for build file 'C:\src\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_database-6.0.0\android\build.gradle' from cache.
> Failed to notify project evaluation listener.
   > Could not get unknown property 'android' for project ':firebase_database' of type org.gradle.api.Project.
   > Could not find method implementation() for arguments [project ':firebase_core'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

这些是我项目中 pubspec.yaml 文件的依赖项。

dependencies:
  flutter:
    sdk: flutter
  firebase_core: ^0.7.0
  firebase_auth: ^0.20.0
  fluttertoast: ^7.1.8 
  google_maps_flutter: ^2.0.1
  firebase_database: ^6.0.0
  geolocator: ^6.1.1
  http: 
  provider: ^5.0.0  

Answer 1

在项目级build.gradle添加：

classpath 'com.google.gms:google-services:4.3.5'

并在应用级别 build.gradle 添加：

apply plugin: 'com.google.gms.google-services'
//above the dependencies tag