Hi, I solved the problem as spachner mentioned. From my point of view it was easy to understand.
About the second solution I still get not the whole idea. If I have a connection between the service and the activity. How do they communicate? Is there an interface between them? @Dianne: Thanks to point out to the sample code. I think I got the idea of binding them together. How do the service send an event to the activity? >From the service is there a possibility to invoke the activity like mMyActivity.changeState();. Another point which I was recognizing you are talking about how a activity knows the service. I'm talking how a service knows an activity. Because in my design the service should trigger view changes. The communication is unidirectional. Thanks in advance T-Droid On Apr 4, 8:24 am, Dianne Hackborn <[email protected]> wrote: > Fyi this approach is illustrated in the LocalService sample code. > > > > On Sat, Apr 3, 2010 at 7:39 PM, JP <[email protected]> wrote: > > Kumar's method might work, but you should look up > > Context.bindService() and ServiceConnection.onServiceConnected() > > to find out how to do this within Android's framework. > > > What I do: In MyApplication's > > �...@override public void onStart() > > I call: > > bindService(new Intent(MyApplication.this, MyService.class), > > new (MyServiceConnection(this)), > > BIND_AUTO_CREATE); > > > MyServiceConnection implements ServiceConnection, and as soon as the > > service is created or bound, you get a call to > > MyServiceConnection.onServiceConnected(), which you implement like > > this: > > public void onServiceConnected(ComponentName name, IBinder service) { > > serv = ((MyService.LocalBinder)service).getService(); > > } > > With serv being an instance variable of MyApplication of type > > MyService which you can use to call methods of your Service. Hope this > > helps. > > > On Mar 30, 1:26 am, T-Droid <[email protected]> wrote: > > > Hi @all, > > > > I have a design problem with my Android components. > > > > My activity is starting a service which is doing the work in the > > > background. What I want is that the service informs the activity about > > > state changes. How can I do this? > > > > Normally I would add an observer but the activity has no reference to > > > the service. Then I was thinking to take AIDL but this is more for > > > inter-process communication. > > > > How is it possible that the service informs the activity about state > > > changes? Both are running in the same process. What can you recommend? > > > > Thank you in advance. > > > > T-Droid > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-developers%[email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > > To unsubscribe, reply using "remove me" as the subject. > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
