简短的回答:

实现: 默认情况下，您应该复制google-services。Json到app dir。

如果想要获得其他效果，可以复制谷歌的服务。Json到app/src/{flavor-name}目录

测试: 尝试构建，打开构建选项卡，然后使用解析json文件检查输出消息:.....

根据@ZakTaccardi的回答，并且假设您不想在两个版本中都使用一个项目，请将此添加到构建的末尾。gradle文件:

def appModuleRootFolder = '.'
def srcDir = 'src'
def googleServicesJson = 'google-services.json'

task switchToStaging(type: Copy) {
    outputs.upToDateWhen { false }
    def flavor = 'staging'
    description = "Switches to $flavor $googleServicesJson"
    delete "$appModuleRootFolder/$googleServicesJson"
    from "${srcDir}/$flavor/"
    include "$googleServicesJson"
    into "$appModuleRootFolder"
}

task switchToProduction(type: Copy) {
    outputs.upToDateWhen { false }
    def flavor = 'production'
    description = "Switches to $flavor $googleServicesJson"
    from "${srcDir}/$flavor/"
    include "$googleServicesJson"
    into "$appModuleRootFolder"
}

afterEvaluate {
    processStagingDebugGoogleServices.dependsOn switchToStaging
    processStagingReleaseGoogleServices.dependsOn switchToStaging
    processProductionDebugGoogleServices.dependsOn switchToProduction
    processProductionReleaseGoogleServices.dependsOn switchToProduction
}

你需要src/staging/google-services文件。Json和src/production/google-services.json。替换您所使用的风味名称。

remove the existing google-services.json from your project. Build > Clean Project compile and run your app look at the error message that comes up to figure out where you can put your google-services.json..mine looked like this File google-services.json is missing. The Google Services Plugin cannot function without it. Searched Location: C:\Users\username\Desktop\HelloWorld\app\src\devSuffixYes_EnvQaApistaging_\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\devSuffixYes_EnvQaApistaging_Debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\devDebug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\devSuffixYes_EnvQaApistaging_\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\debug\devSuffixYes_EnvQaApistaging_\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffixDebug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_Debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\envDebug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qa\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qaDebug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qa\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qa\apistaging_\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qa\apistaging_Debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\src\dev\suffix\yes_\env\qa\apistaging_\debug\google-services.json C:\Users\username\Desktop\HelloWorld\app\google-services.json

注意:它还关心flavorDimensions中声明的顺序。我的是flavorDimensions“dev_suffix”，“environment”

写了一篇关于这个问题的文章。

有一个类似的问题(使用BuildTypes而不是flavour)，并像这样修复了它。

利用Gradle的依赖管理系统。我创建了两个任务switchToDebug和switchToRelease。要求在运行assemblerrelease时，也运行switchToRelease。调试也是一样。

def appModuleRootFolder = '.'
def srcDir = 'src'
def googleServicesJson = 'google-services.json'

task switchToDebug(type: Copy) {
    def buildType = 'debug'
    description = 'Switches to DEBUG google-services.json'
    from "${srcDir}/${buildType}"
    include "$googleServicesJson"
    into "$appModuleRootFolder"
}

task switchToRelease(type: Copy) {
    def buildType = 'release'
    description = 'Switches to RELEASE google-services.json'
    from "${srcDir}/${buildType}/"
    include "$googleServicesJson"
    into "$appModuleRootFolder"
}

afterEvaluate {
    processDebugGoogleServices.dependsOn switchToDebug
    processReleaseGoogleServices.dependsOn switchToRelease
}

编辑:使用processDebugFlavorGoogleServices/processReleaseFlavorGoogleServices任务在每个flavor级别上修改它。

1)。谷歌提供什么服务?Json真的有用吗?

关注这个:https://stackoverflow.com/a/31598587/2382964

2)。谷歌是如何服务的。Json文件影响你的android工作室项目?

关注这个:https://stackoverflow.com/a/33083898/2382964

简单来说就是第二个url，如果你添加google-services。Json在你的项目中必须有一个自动生成的google-services文件夹在这个路径下调试变量

app/build/generated/res/google-services/debug/values/values.xml

3)。该怎么做，才能把事情做好?

在project_level构建中添加google-services依赖项。Gradle，如果你使用app_compact库，你也可以使用3.0.0版本。

// Top-level build.gradle file
classpath 'com.google.gms:google-services:2.1.2'

现在在app_level build中。你必须在底部添加Gradle。

// app-level build.gradle file
apply plugin: 'com.google.gms.google-services'

注意:在gradle文件底部添加这一行非常重要。否则Gradle构建不会给你任何错误，但它不能正常工作。

4)。谷歌服务该放在哪里?Json文件在你的结构。

如果你没有build_flavor，就把它放在inside /app/google-service中。json文件夹。

情况2.)如果你有多个build_flavor并且你有不同的google_services。Json文件放在app/src/build_flavor/google-service.json中。

情况3.)如果你有多个build_flavor和单个google_services。Json文件放在app/google-service.json中。

受到上面@ahmed_khan_89答案的启发。我们可以直接这样保存在gradle文件中。

android{

// set build flavor here to get the right Google-services configuration(Google Analytics).
    def currentFlavor = "free" //This should match with Build Variant selection. free/paidFull/paidBasic

    println "--> $currentFlavor copy!"
    copy {
        from "src/$currentFlavor/"
        include 'google-services.json'
        into '.'
    }
//other stuff
}