Question

I’m using the following GPX file in Xcode 4.2 to simulate a location change. It works well, but I can’t control the speed of the location change. stamp seems to be not working. Does anyone have a solution for this?

<?xml version="1.0"?>
<gpx version="1.1" creator="Xcode"> 
    <wpt lat="37.331705" lon="-122.030237"></wpt>
    <wpt lat="37.331705" lon="-122.030337"></wpt>
    <wpt lat="37.331705" lon="-122.030437"></wpt>
    <wpt lat="37.331705" lon="-122.030537"></wpt>
</gpx>

Answer 1

I don’t think (know) that this is possible in the GPX directly, but you can test location change with Instruments/Automation.

You’d use a script like:

var target = UIATarget.localTarget();
target.setLocation(<location);
target.delay(5);
target.setLocation(...);

And so on. I took this example from the WWDC11 video (Testing your location-aware applications)

I’m aware that this doesn’t actually let you define the speed, but the delays somehow account for that I hope. Maybe that’ll help you.