Android 与firebase 11.8.0和google服务插件3.1.2冲突

我与firebase 11.8.0和google服务插件3.1.2有明显的冲突。建议改用firebase的11.4.2版，但构建失败

my gradle构建文件的相关摘录：

Root

build.gradle

buildscript {
    repositories {
        google()
        ...
    }
    dependencies {
        classpath 'com.google.gms:google-services:3.1.2'
        ...
    }
}

应用程序

build.gradle

：

apply plugin: 'com.google.gms.google-services'
repositories {
    google()
    ....
}
dependencies {
    implementation "com.google.firebase:firebase-core:11.8.0"
    ....
}

我已正确生成firebase应用程序文件：

./app/src/debug/google-services.json
./app/src/release/google-services.json

当我使用

/gradlew clean assembleDebug

生成时，生成失败，出现以下错误：

> Task :app:processDebugGoogleServices FAILED
Found com.google.firebase:firebase-core:11.8.0, but version 11.4.2 is needed for the google-services plugin.


FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugGoogleServices'.
> Please fix the version conflict either by updating the version of the google-services plugin (information about the latest version is available at https://bintray.com/android/android-tools/com.google.gms.google-services/) or updating the version of com.google.android.gms to 11.4.2.

---

解决方案是将此行移动到app

build.gradle

文件的底部（不应位于顶部）：

文件中对此进行了规定：

然后，在模块Gradle文件（通常是app/build.Gradle）中添加 文件底部的apply plugin行用于启用渐变 插件：

apply plugin: 'com.android.application'

android {
  // ...
}

dependencies {
  // ...
  compile 'com.google.firebase:firebase-core:11.8.0'

  // Getting a "Could not find" error? Make sure you have
  // added the Google maven respository to your root build.gradle
}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

apply plugin: 'com.android.application'

android {
  // ...
}

dependencies {
  // ...
  compile 'com.google.firebase:firebase-core:11.8.0'

  // Getting a "Could not find" error? Make sure you have
  // added the Google maven respository to your root build.gradle
}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'