将Cloud messaging api添加到GoogleApiClient时出现IllegalArgumentException

Question

我正在Android应用程序中设置Google Cloud Messaging。首先，我初始化GoogleApiClient以检查Play服务是否可用：

mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();

尝试运行它会生成IllegalArgumentException: must call addApi() to add at least one API，所以我还需要添加GCM Api，但老实说我在文档中找不到它。类似的东西：

mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addApi(gcm.API)     <----- WHAT HERE?
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();

Answer 1

似乎还没有办法将GoogleApiClient与Google Cloud Messaging结合使用。在此之前，我们需要使用GooglePlayServicesUtil方式。

Answer 2

尝试此代码

GoogleApiClient apiClient = new GoogleApiClient.Builder(this)
                .enableAutoManage(
                                  this /* FragmentActivity */
                                  , this /* OnConnectionFailedListener */)                    
                .addApi(Auth.CREDENTIALS_API)
                .build();