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iosxcodecore-locationperformselector

is there a performSelector on some boolean in ios development

I'm using CoreLocation,and I want to call a method to do some computations on the latitude and longitude after they have been assigned valid values or after these values have been updated.

How do you implement this? I was considering using performSelector, but those methods take a time delay -- i don't want a time delay, i want to know that latitude and longitude have valid values first.

Solution

  • Why not call whatever method you want in Core Locations delegate method:

    - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation;

    Rule of thumb is to ignore the first set of CLLocation coordinates.