The onPause() method in this example is broken, because if
shouldStopService() returns false then it won't unbind, and the next time
the activity gets resume it will then go and re-build, causing a growing
number of bindings.
On Sun, Jul 19, 2009 at 7:58 AM, Guillaume Perrot
<guillaume.p...@gmail.com>wrote:
>
> Using both startService and bindService is handy to wait for the
> onServiceConnected callback before requesting a singleton reference
> that is set in the service's onCreate.
> If you do this just after the startService, the reference will be
> null.
> The startService is needed for the service to continue running when
> the activities have been destroyed (and call unbind).
> A use case is a service managing a background XMPP connection in a
> chat/social application (only the "sign out" user action would call
> stopService).
> So, Mark I don't understand your point when you say not to use both
> startService and bindService.
>
> On 19 juil, 13:47, Mark Murphy <mmur...@commonsware.com> wrote:
> > Yossi wrote:
> > > Hi Mark,
> >
> > > My code is relatively simple
> >
> > > public void onResume()
> > > {
> > > Intent intent = new Intent(this, TrackingService.class);
> > > startService(intent);
> > > bindService(intent, _connection, Context.BIND_AUTO_CREATE);
> > > }
> >
> > Do either startService() or bindService(), not both.
> >
> >
> >
> > > public void onPause()
> > > {
> > > if(shouldStopService())
> > > {
> > > unbindService(_connection);
> > > stopService(new Intent(this, TrackingService.class));
> > > }
> > > }
> >
> > Do either unbindService() or stopService(), matching up with what you
> > chose to do in onResume().
> >
> > Unless your service is in some other process (which the use of
> > TrackingService.class suggests it is not), you probably do not want to
> > use bindService()/unbindService(). Use startService() to start it, then
> > use stopService() only when you want to stop the service. Since it is in
> > your process, use other means (e.g., static singleton reference to the
> > service) to communicate with it from the activity.
> >
> > Right now, your service stop shortly after your activity goes
> > off-screen, because you are telling the service to stop in onPause().
> >
> > http://developer.android.com/reference/android/app/Service.html#Servi...
> >
> > --
> > Mark Murphy (a Commons Guy)http://commonsware.com|
> http://twitter.com/commonsguy
> >
> > Android 1.5 Programming Books:http://commonsware.com/books.html
> >
>
--
Dianne Hackborn
Android framework engineer
hack...@android.com
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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