AvailabilityListener

This interface is implemented by clients that want to know when the player has determined whether music is available for playback or not.

Only one of the two methods will ever be called, and never more than once. Neither method will be called until the player has tried (successfully or unsuccessfully) to contact the Adaptr servers to retrieve a list of streaming stations.

Note that if this client has previously downloaded music to the local device but the device is now not connected to the Internet, then AvailabilityListener.onPlayerAvailable will be called and stationList will be empty while localOfflineStationList will contain entries.