title: Calling methods in a Binder
body: <p>I'm trying to expose methods using my subclass of Binder. I'm gonna have my Service return that Binder, etc, etc... </p>
  
  <p>My question is: can I have my Binder implementation call methods defined in my other classes. As an example, I'm using XMPP to connect, login, and send chat messages. If I define those methods in a different class (which makes sense from a modularity perspective), can I simply expose them through my Binder?</p>
  
  <p>Also, my understanding is that you no longer need to use AIDL for IPC (http://developer.android.com/guide/topics/fundamentals/bound-services.html#Messenger), but instead you can use messengers. I'm a bit unclear as to how an activity (or other app component) would bind and then make a call to a specific method exposed by my Binder. </p>
  
  <p>Any samples or just setting me straight would be greatly appreciated.</p>
  
  <p>Thanks. </p>