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。

谷歌服务。Json文件是不必要的接收通知。只要在你的构建中为每种味道添加一个变量。gradle文件:

buildConfigField "String", "GCM_SENDER_ID", "\"111111111111\""

使用这个变量BuildConfig。GCM_SENDER_ID代替getString(R.string.gcm_defaultSenderId)注册时:

instanceID.getToken(BuildConfig.GCM_SENDER_ID, GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);

我目前在同一个应用程序包中使用两个GCM项目Id。我加入了谷歌服务。我的第一个GCM项目的json，但我从第一个切换到第二个只改变SENDER_ID:

    String token = instanceID.getToken(SENDER_ID,GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);

(在这一点上，我认为谷歌的服务。Json不是强制性的)

根据Firebase文档，你也可以使用字符串资源来代替google-services.json。

因为这个提供者只是读取已知名称的资源，另一种选择是直接将字符串资源添加到应用程序中，而不是使用谷歌Services gradle插件。你可以这样做: 从根build.gradle中移除google-services插件 删除google服务。来自项目的Json 直接添加字符串资源 删除应用插件:'com.google.gms。你的应用build.gradle中的Google-services

示例strings.xml:

<string name="google_client_id">XXXXXXXXX.apps.googleusercontent.com</string>
<string name="default_web_client_id">XXXX-XXXXXX.apps.googleusercontent.com</string>
<string name="gcm_defaultSenderId">XXXXXX</string>
<string name="google_api_key">AIzaXXXXXX</string>
<string name="google_app_id">1:XXXXXX:android:XXXXX</string>
<string name="google_crash_reporting_api_key">AIzaXXXXXXX</string>
<string name="project_id">XXXXXXX</string>

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”

事实上，只有一个谷歌——服务。MyApp/app/目录下的com.google.gms:google-services:3.0.0是很好的，不需要额外的脚本。但是要小心删除文件google-services。为了避免错误类型为“:app:processDebugGoogleServices”的任务执行失败，请从应用目录MyApp/app/src/flavor1/res/”中删除。没有为包找到匹配的客户端