Question

I have a particular situation:
a service started by a broadcast receiver starts an activity. I want to make it possible for this activity to communicate back to the service. I have chosen to use AIDL to make it possible. Everything seems works good except for bindService() method called in onCreate() of the activity. bindService(), in fact, throws a null pointer exception because onServiceConnected() is never called while onBind() method of the service is. Anyway bindService() returns true.
The service is obviously active because it starts the activity.
I know that calling an activity from a service could sound strange, but unfortunately this is the only way to have speech recognition in a service.

Thanks in advance

Answer 1

I can’t make up the exact problem out of your description, so I’m going to guess here!

How can bindService() throw a NullPointerException? The only way this could (/should) happen is when you don’t supply a Service or a ServiceConnection listener.

bindService() can’t throw a NullPointerException because onServiceConnected() isn’t called. The call to onServiceConnected() is a product of bindService().

So I guess you are calling a AIDL method, before the Service has actually bonded?