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);

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。

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)

Google -services插件的目的是简化谷歌特性的集成。

因为它只从google服务中生成android资源。json文件，过于复杂的gradle逻辑否定了这一点，我认为。

因此，如果google文档没有说明特定的google特性需要哪些资源，我建议为每个相关的buildtype/flavor生成json文件，看看插件生成了哪些资源，然后手动将这些资源放入各自的src/buildtypeORflavor/res目录中。

删除对google-services插件和json文件的引用，就完成了。

有关google-services gradle-plugin内部工作原理的详细信息，请参阅我的另一个答案:

https://stackoverflow.com/a/33083898/433421

我发现google-services插件对于想要添加GCM的项目来说是非常无用的。它只生成以下文件，简单地将您的项目ID添加为字符串资源:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- Your API key would be on the following line -->
    <string name="gcm_defaultSenderId">111111111111</string>
</resources>

似乎只有在直接从Cloud Messaging for Android指南复制样例代码时才需要它。下面是示例行:

String token = instanceID.getToken(getString(R.string.gcm_defaultSenderId),              GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);

解决方案

如果您希望能够为不同的构建类型或产品风格切换API项目，您只需定义自己的常量，并在调用getToken() API时选择适当的常量。

private static final String SENDER_ID = "111111111111";
private static final String SANDBOX_SENDER_ID = "222222222222";

String token = instanceID.getToken(
        BuildConfig.DEBUG ? SENDER_ID : SANDBOX_SENDER_ID,
        GoogleCloudMessaging.INSTANCE_ID_SCOPE,
        null);

产品口味

上面的代码用于在调试和发布版本之间切换。对于产品类型，您可以在java源文件中定义不同的API键，并将这些文件放在相应的产品类型目录中。参考:Gradle Build variables

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”