I have been writing some code using the WP8 geolocator and have been finding many challenges as I go, and as this is all somewhat new at the time this is being written, I thought I'd open a forum to share those with others.
Here is one that I still haven't fully resolved: Should I use the Geolocator.PositionChanged event handler to update location or should I use the Geolocator.GetGeopositionAsync async method (using await to call) and test if the location changed by a given threshold before I make updates, to a map, for example?
I initially went for the direct call method. It worked well but seemed counter intuitive when I realized I could simply use an event handler and define the DesiredAccuracy to filter only good reads.
I then modified my code to use the event handler. All worked well, except that the reads are sporadic. Regardless of setting Geolocator.ReportInterval or the Geolocator.MovementThreshold the event fires at will.
I am working on this and will post developments.