需要有关活动和服务行为的建议

Question

My question is rather theoric, in fact I already saw examples on how to bind or how to start an Activity with a service but I still don't get one thing: I wrote a Service that is bounded to an activity and I'm wondering how to get the activity that called the bindService() method from this service.

My purpose is to get an object that will be necessary to the service because I want it to listen for networks messages in background, as this object is quite complicated to parcel I'd rather get the activity that contains it.
Is there any call possible to the current context?

Thanks for your answers.

Answer 1

If your service is only used within your application and by only one process at a time, you can try to use a bound service. in the IBinder interface used to communicate between the activity and the service implements a public method that returns the local service. This IBinder will be given to the activity through the onServiceConnected() callback. At this point the activity can get the Service object and call on it a public method to pass the object that you want.

public class MyService extends Service {

    private final IBinder mBinder = new MyBinder(); //singleton

    private MyObject mObject;

    public class MyBinder extends Binder {
        MyService getService() {
            return this;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    public void setMyObject(MyObject mObject) {
      this.mObject = mObject;
    }
}

Hope this works for you.