同步 Gradle 时出现 Firebase 错误 [重复]答案

【问题标题】：Firebase Error when syncing Gradle [duplicate]同步 Gradle 时出现 Firebase 错误 [重复]
【发布时间】：2017-10-01 14:56:22
【问题描述】：

同步 gradle 时出现此错误我已经在SDK Manager 中安装了Google repository 和Google play services，但我仍然收到此错误！

Error:Could not find com.google.android.gms:play-services-ads:11.4.0.
Searched in the following locations:
file:/C:/Program Files/Android/Android Studio/gradle/m2repository/com/google/android/gms/play-services-ads/11.4.0/play-services-ads-11.4.0.pom
file:/C:/Program Files/Android/Android Studio/gradle/m2repository/com/google/android/gms/play-services-ads/11.4.0/play-services-ads-11.4.0.jar
https://jcenter.bintray.com/com/google/android/gms/play-services-ads/11.4.0/play-services-ads-11.4.0.pom
https://jcenter.bintray.com/com/google/android/gms/play-services-ads/11.4.0/play-services-ads-11.4.0.jar
Required by:
project :

这是我的 Gradle 文件：

apply plugin: 'com.android.application'

android {
   compileSdkVersion 26
   buildToolsVersion "26.0.1"
   defaultConfig {
    applicationId "ytstudios.wall.bucket"
    minSdkVersion 21
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }
}
compile 'com.android.support:design:26.0.1'
compile 'com.android.support:recyclerview-v7:26.0.1'
compile 'com.android.support:cardview-v7:26.0.1'

compile 'com.google.android.gms:play-services:11.4.0'
compile 'com.google.firebase:firebase-ads:11.4.0'


//Firebase Plugin
apply plugin: 'com.google.gms.google-services'

还有类路径：

classpath 'com.google.android.gms:play-services-ads:11.4.0'

【问题讨论】：

你必须编译 'com.google.android.gms:play-services-ads:11.4.0' 来源：developers.google.com/android/guides/setup
不，仍然出现错误
能不能分享一下项目级的gradle文件

标签： android firebase admob google-play-services

【解决方案1】：

已解决：编译类路径classpath 'com.google.gms:google-services:3.1.0' 并添加了存储库

maven {
        url "https://maven.google.com" // Google's Maven repository
    }

也编译 compile 'com.google.firebase:firebase-core:11.4.0' 在 Gradle 项目中

【讨论】：

美观大方。