Chris, I see the same behaviour. But won't the timestamp method in QGeoPositionInfo help you? If the stamp differs a lot from current time, then it is likely to be invalid in your case. At least that is what I see in my application, the first update has the timestamp set to the time when GPS was last used.
/jsl 2014/1/17 <christopher.l...@thurweb.ch> > Hi all > > Is it possible that the Jolla GPS / GPS Software stack initially shows the > last location acquired? > > This is the behaviour I am observing. > > At the moment I am sitting in an office building, which has poor GPS > reception, yet my app immediately shows GPS Coordinates. By peaking I can > see that the GPS icon is flashing, and thus no fix has been acquired. > > Having checked the GPS coordinates with Google Earth, the coords are > actually for a location several kilometers away - in the middle of a set of > railway tracks that I travel along to and from work. As I do lots of mobile > development on the train, this is a plausible location for where the Jolla > last got a fix. > > By comparison the same app running on my old Nokia N9 gets NaN from the > GPS for longitude and lattitude until it gets a fix. I can then translate > this into a user friendly text on the GUI "No valid position yet", and stop > the user from proceeding further into the app until a true fix is acquired. > > If my understanding of the behaviour of the Jolla GPS is correct, is there > anyway I can stop it giving me the old fix? It is important to my app that > the coords shown are as accurate as possible, otherwise a recovery party / > rescue helicopter may be mis-directed. > > Chris > > _______________________________________________ > SailfishOS.org Devel mailing list >
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