ChangeListener This interface was deprecated. Use OnChangeListener instead.  
CompletionListener Event listener interface for CompletionEvent
DriveEvent Base interface implemented by all Drive event types. 
ListenerToken Token for identifying registered listeners. 
OnChangeListener Event listener interface that enables handling of ChangeEvent
ResourceEvent Base interface for DriveEvent types related to a specific resource. 


ChangeEvent Sent when a DriveResource has had a change to its DriveContents or Metadata
CompletionEvent An event delivered after the client requests a completion notification using setNotifyOnCompletion(boolean) and that action has either succeeded or failed on the server. 
DriveEventService Abstract base class for a bound service that handles all DriveEvent instances. 
OpenFileCallback A callback for progress events on an active file contents download.