Hi, I'd suggest polling http://developer.android.com/reference/android/location/LocationManager.html#getLastKnownLocation(java.lang.String) to see if it receiving any updates - the timestamp shows how old the last fix was. Also try using a NEMA listener as well (if possible - it is not working on some devices) to see if it is getting updates.
http://developer.android.com/reference/android/location/LocationManager.html#addNmeaListener(android.location.GpsStatus.NmeaListener) Regards On Jul 14, 1:20 am, Bryan Glick <b.rye....@gmail.com> wrote: > I am working on an augmented reality-type application. I noticed an issue > with GPS not updating as expected. I have put a counter on-screen so that I > can keep track of how often onLocationChanged is being called. > > The GPS receives lock ok, and begins calling onLocationChanged. After some > time (less than a minute) onLocationChanged will stop being called, and the > GPS location is no longer being updated. This happens whether we are > standing stationary or driving in a car. We can usually get the GPS to > continue updating if we set the phone down on a surface with the camera > sensor down (so the screen shows nothing but black). After that it will > continue to update for some time before again stopping. > > We've produced two more applications to help debug this issue. > One is this > application:http://developer.android.com/resources/samples/ApiDemos/src/com/examp... > modified to work with Android 2.2. We've added a LocationListener and an > on-screen onLocationChanged counter and nothing else. This application > functions the same way as the augmented reality application, with > intermittent stoppages in GPS updates. > > The other application is just a location listener and an on-screen counter, > without using the camera. That application works perfectly fine. The > location listener never stops updating, and functions exactly as we'd > expect. > > We've tried requesting location updates with different time and distance > parameters, but they don't seem to affect functionality. > > We've used two different HTC Inspire 4G phones to test this, and both > function the same way. We've also tested on a Motorola Droid 2 that did not > seem to have the same issue, although we were not able to test as thoroughly > on the Droid 2. The HTC Inspires are running the stock HTC Android 2.2.1 OS. > > Any ideas? Is there any reason the GPS would work better when the camera > sensor is covered and not letting any light in? That's the variable that > seems to affect functionality the most (although it's not completely > consistent). > > I've found a few threads that mention an issue with using GPS and the camera > simultaneously, but all have been open-ended, unanswered questions. > > Thanks! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
