I have solved this problem [with much thanks to the brains on this group] by running two LocationListeners side-by-side, one fine [GPS] and one coarse [Network]. The first provider to get a location update wins and I use that location. This works for me as I don't care about the location being super accurate at this point [later in my app I allow the listeners to run their lives and whenever GPS is active and available I use its updates then if it goes unavailable/disabled I allow Network to take over [the whole while I'm running the two listeners side-by-side, and just not handling updates from Network if GPS is active/available].
You really have no reason to have a LocationListener[10] array... There are really only two location providers, Network and GPS. So all you need are two LocationListeners: fineLocationListener and coarseLocationListener. Here, this is the thread in which I learned how to do this: http://groups.google.com/group/android-developers/browse_thread/thread/99ebef7294b094d5/6945dab119f1bf67 .. its a pretty good discussion on LocationListeners. Hope this helps! -Nick On Apr 16, 6:06 pm, JP <[email protected]> wrote: > What I do. > I never even look at lastKnownLocation; as you state it might be old > like dustballs. > This means I will only process locations received fresh from > onLocationChanged(). > As you note, this may never happen. So keep users informed > accordingly! If you couldn't acquire a fix, let the user know. > > On Apr 16, 3:41 pm, Anna PS <[email protected]> wrote: > > > > > > > > On Apr 16, 12:45 am, JP <[email protected]> wrote: > > > On Apr 15, 8:35 am, Anna PS <[email protected]> wrote: > > > > > Yet in my log files, I can > > > > still see the Android NetworkLocationProvider logging > > > > onCellLocationChanged events. Is this a bug in my code? > > > > Without diving into your code. Double check it by using GPS. GPS is > > > considerably more accurate than base station based triangulation, > > > which may not result in location changes even if you move a hundred > > > meters (in my experience, anyway). > > > The basic issue is this. I don't want to accidentally end up with a > > LastKnownLocation that's days out of date, so I have to check the age > > of the location fix. > > > Since the GPS time (from location.getTime()) and the system time can > > be quite different (as <a href="http://www.mail-archive.com/android- > > [email protected]/msg47517.html">discussed here</a>, > > comparing the two doesn't work. The only reliable way seems to be: > > > - get an initial location from getLastKnownLocation > > - wait for a location update from onLocationChanged > > - compare the age of the two to make sure the latter is newer. > > > However, I'd also like to write code that handles gracefully the > > possibility that the user is (say) indoors, and therefore won't get an > > onLocationChanged event at all. (In which case, we should just take > > the LastKnownLocation, and never mind if it's out of date.) > > > I seem to be at a logical impasse. What can I do? I can't wait for an > > onLocationChanged event if it's never going to happen - my code will > > hang forever! But equally I can't just take getLastKnownLocation every > > time - it might be wildly inaccurate. > > > Maybe I need to run some kind of timer in the code, to check how long > > we've been waiting for an onLocationChanged. Does that seem like the > > best idea? > > > -- > > 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 > > athttp://groups.google.com/group/android-developers?hl=en > > -- > 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 > athttp://groups.google.com/group/android-developers?hl=en -- 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
