Hello T-Droid,

maybe this it's so simple that noone wants to say it ? :-)

I simply  use a static call back reference in the service class
to inform the calling activity about any changes from the service.

Works fine. But maybe you should better use a android.os.Handler.
In my case I use Handler more in the service themselve.

Good luck !

  Frank




On 4 Mai, 08:37, T-Droid <[email protected]> wrote:
> Sorry, I was meaning I'm using the solution of Kumar Bibek. The static
> one.
>
> On May 4, 8:34 am, T-Droid <[email protected]> wrote:
>
>
>
>
>
> > 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
>
> > > > --
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> > > --
> > > 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.
>
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