onUnbind not being called when binding the activity to a running service

Question

I have this activity that starts and binds to a service:

@Override
protected void onStart() {
    super.onStart();

    Intent intent = new Intent(context, SoundService.class);
    context.startService(intent);
    context.bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE);
}

and I unbind by:

@Override
protected void onStop() {
    context.unbindService(serviceConnection);

    super.onStop();
}

The service keeps running even after closing the activity. Look at this scenario:

1. Activity starts the service and binds to it
2. Activity gets killed, the service keeps running, onUnbind() is called
3. Activity starts again, and binds to the running service
4. Activity gets killed, onUnbind() is not called :(

Why is the onUnbind() not being called?

Answer 1

return true from onUnbind, next time if you call bindService again not only onRebind will be called but also when the last clients unbinds also onUnbind will be called by the system