Communicating with Services
In all of our dealings with Services so far, we have initiated work by invoking
startService with an
Intent, but that isn't our only option. If our
Service is designed to only be used locally from within our own application process, we can take significant shortcuts and work with
Service just as we do with any other Java object.
Direct communication with local Services
To create a
Service that we can interact with directly, we must implement the
onBind method that we previously ignored and from which we returned
null. This time, we'll return an implementation of
IBinder that provides direct access to the Service it binds. We'll always return the same
IBinder as shown in the following code:
public class LocalPrimesService ...