Chris Wren 5717bd6ddb add an onListenerDisconnected() callback to NLS
Also block all callbacks if the listener is not connected.

Also update the documentation to make lifecycle restictions
more clear.

Bug: 27582839
Change-Id: I029304e1fb87bd8d754cfb4641ba8cc095fc2b2e
2016-04-07 13:12:21 -04:00
..