Thanks TreKing -- After pouring through my application last evening, I discovered one of my tabs was turning *off* the radio in its onPause() method. Once I remedied that, the app *does* now seem to behave like Google's stuff. For those who may (pronounced WILL) suffer through this at some point, watch the notification area closely! I failed to recognize the satellite icon was disappearing when I clicked away from the tab! Doh.
Peace, Scott On Dec 3, 8:59 am, TreKing <[email protected]> wrote: > To reiterate what's been said, you only want to use getLastKnownLocation() > *ONCE*, at start up, to give you *something* to work with - a starting > point. After that you should be relying only on the location provider > updates for the most accurate location information. > > I would suggest you do what jotobjects suggests and log the different > location values. I wouldn't be surprised if getLastKnownLocation() is > different the whatever the location provider returns as the most current, > since it's entirely possible that the system only updates the last known > location once that last provider is unregistered. > > "It would be like the bank saying we can't tell you what your balance is > now, but we can tell you what it was last Tuesday" > > It's more like "we can show your balance from Tuesday immediately, since we > have it already on hand, while we load up your most recent transactions". > > "It *must* be possible or the Google Nav and Maps wouldn't work either." > > Those apps work the same way. At least as far as I can tell, when starting > up Google Maps it generally jumps to the last place I had used GPS at (ie, > getLastKnownLocation()) and then pans to my current location as soon as it > has a fix. > > ------------------------------------------------------------------------------------------------- > TreKing - Chicago transit tracking app for Android-powered > deviceshttp://sites.google.com/site/rezmobileapps/treking > > On Wed, Dec 2, 2009 at 7:18 PM, stanlick <[email protected]> wrote: > > When your app needs to show where *you are* -- where *you were* isn't > > going to cut it. It would be like the bank saying we can't tell you > > what your balance is now, but we can tell you what it was last > > Tuesday. It *must* be possible or the Google Nav and Maps wouldn't > > work either. I have it working much better now, but my confidence is > > not real high. > > > Peace, > > Scott > > > On Dec 2, 6:39 pm, Ken H <[email protected]> wrote: > > > My understanding is getLastKnownLocation is used to give your app an > > > immediate location since getting a good GPS fix can sometimes take up > > > to a minute. This way your app would show *something* until a better > > > position can be determined by initializing a provider, setting up your > > > time and distance update intervals, and giving that info to > > > requestLocationUpdates for immediate updates. > > > > Ken > > > > On Dec 2, 2:19 pm, jotobjects <[email protected]> wrote: > > > > > requestLocationUpdates() docs say - > > > > > "It may take a while to receive the most recent location. If an > > > > immediate location is required, applications may use the > > > > getLastKnownLocation(String) method." > > > > > You could verify that getLastKnownLocation(providerName) returns the > > > > same Location as the argument to onLocationChanged() by logging > > > > getLatitude(), getLongitude(), and getProvider() for both Location > > > > values. If these values are different AND they are different than > > > > what MyLocation shows then there are three different Location values. > > > > It would be interesting to know which one is right! > > > > > On Dec 2, 1:30 pm, stanlick <[email protected]> wrote: > > > > > > Are you saying if the CB occurred, indicating a new location "fix" > > > > > that getLastKnownLocation would not also return this last know > > > > > location? I think I tried using the the location local variable > > > > > during one of my permutations and the net effect was the same. Funny > > > > > thing is, while the Android API location shows me several blocks from > > > > > where I am, the My Location button in Google Maps finds me perfectly! > > > > > I have checked all my criteria and it looks okay. ACCURACY_FINE no > > > > > concern for cost, etc. I just don't get it! I wish there was a > > > > > criteria DO_IT_LIKE_GOOGLE_DOES! > > > > > > Sleepless in St. Louis, > > > > > Scott > > > > > > On Dec 2, 3:14 pm, Jeffrey Blattman <[email protected]> > > > > > wrote: > > > > > > > LocationManager. requestLocationUpdates() > > > > > > < > >http://developer.android.com/reference/android/location/LocationManag...> > > > > > > LocationListener. onLocationChanged > > > > > > < > >http://developer.android.com/reference/android/location/LocationListe.. > > .>(Location > > > > > > < > >http://developer.android.com/reference/android/location/Location.html> > > > > > > location) > > > > > > > you are passed the location in the CB. no need to call > > getLastKnown... > > > > > > > On 12/2/09 1:10 PM, stanlick wrote: > > > > > > > > I *am* using the listener loop and using getLastKnownLocation > > from the > > > > > > > locationManager inside the onLocationChanged() method. Is this > > not > > > > > > > the correct pattern? > > > > > > > > On Dec 2, 2:31 pm, Lance Nanek<[email protected]> wrote: > > > > > > > >> Why are you using getLastKnownLocation if you want a fresh fix? > > The > > > > > > >> documentation says it won't even start the location provider. > > Use > > > > > > >> requestLocationUpdates. > > > > > > > >> On Dec 2, 2:53 pm, stanlick<[email protected]> wrote: > > > > > > > >>> Didn't we put a man on the moon? It can't be done seems a > > little lazy > > > > > > >>> today! > > > > > > > >>> I have read all the posts about this topic and I understand the > > > > > > >>> arguments being made. However, I would like to know how Google > > Maps > > > > > > >>> can return my *current* location yet while driving the same > > stretch of > > > > > > >>> road, the Android API often (not always) gives me a last known > > > > > > >>> location that was miles back. I need to be able to rely on the > > API to > > > > > > >>> provide me with a *current location* and I have tried all the > > tricks > > > > > > >>> being proposed here and elsewhere. Is there lower level code > > > > > > >>> someplace that could ping the phone's radio for a "fresh fix?" > > > > > > > >>> If you have solved this riddle, I would be happy to pay for > > your > > > > > > >>> solution. > > > > > > > >>> Peace, > > > > > > >>> Scott > > > > > > > -- > > > > > > > qr-gmail.png > > > > > > < 1KViewDownload > > > -- > > 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 -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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