package

com.google.android.gms.common

Contains utility classes for Google Play services.

Interfaces

GooglePlayServicesClient  
GooglePlayServicesClient.ConnectionCallbacks Provides callbacks that are called when the client is connected or disconnected from the service. 
GooglePlayServicesClient.OnConnectionFailedListener Provides callbacks for scenarios that result in a failed attempt to connect the client to the service. 

Classes

AccountPicker Common account picker similar to the standard framework account picker introduced in ICS: newChooseAccountIntent
ConnectionResult Contains all possible error codes for when a client fails to connect to Google Play services. 
GooglePlayServicesUtil Utility class for verifying that the Google Play services APK is available and up-to-date on this device. 
Scopes OAuth 2.0 scopes for use with Google Play services. 
SignInButton The Google sign-in button to authenticate the user. 

Exceptions

GooglePlayServicesNotAvailableException Indicates Google Play services is not available.