http://developer.android.com/training/wearables/data-layer/accessing.html Accessing the Wearable Data Layer-数据层连接 GoogleApiClient是一个用于整合所有谷歌服务的入口,想要连接数据层,需要构建一个对象.GoogleApiClient提供了一个builder方法简化了构建对象的步骤. GoogleApiClient mGoogleApiClient = new GoogleA…