Google Play services API	Description in build.gradle
Google+	com.google.android.gms:play-services-plus:10.2.4
Google Account Login	com.google.android.gms:play-services-auth:10.2.4
Google Actions, Base Client Library	com.google.android.gms:play-services-base:10.2.4
Google Address API	com.google.android.gms:play-services-identity:10.2.4
Google Analytics	com.google.android.gms:play-services-analytics:10.2.4
Google Awareness	com.google.android.gms:play-services-awareness:10.2.4
Google Cast	com.google.android.gms:play-services-cast:10.2.4
Google Cloud Messaging	com.google.android.gms:play-services-gcm:10.2.4
Google Drive	com.google.android.gms:play-services-drive:10.2.4
Google Fit	com.google.android.gms:play-services-fitness:10.2.4
Google Location and Activity Recognition	com.google.android.gms:play-services-location:10.2.4
Google Maps	com.google.android.gms:play-services-maps:10.2.4
Google Mobile Ads	com.google.android.gms:play-services-ads:10.2.4
Google Places	com.google.android.gms:play-services-places:10.2.4
Mobile Vision	com.google.android.gms:play-services-vision:10.2.4
Google Nearby	com.google.android.gms:play-services-nearby:10.2.4
Google Panorama Viewer	com.google.android.gms:play-services-panorama:10.2.4
Google Play Game services	com.google.android.gms:play-services-games:10.2.4
SafetyNet	com.google.android.gms:play-services-safetynet:10.2.4
Android Pay	com.google.android.gms:play-services-wallet:10.2.4
Android Wear	com.google.android.gms:play-services-wearable:10.2.4

要使用Google Play Services需要在AndroidManifest.xml的<application>节点下添加

<meta-data android:name="com.google.android.gms.games.APP_ID" android:value="@string/app_id" />
APP_ID在开发者后台创建项目时得到。