MKMapView zoom to users location on viewDidLoad?

Question

I\'m trying to zoom a map into the user\'s current location once the view loads, but I\'m getting the error \"** * Terminating app due to uncaught exception \'NSInvalidA

Answer 1

By far the easiest way is to use mapView.showAnnotations in didUpdateUserLocation:

func mapView(mapView: MKMapView!, didUpdateUserLocation userLocation: MKUserLocation!) {
    mapView.showAnnotations([userLocation], animated: true)
}

That's all!

MKUserLocation conforms to the MKAnnotation protocol. Pass the userLocation as an array, the showAnnotations method will let the mapView zoom in on a region plus padding spanning the array of MKAnnotations,in this case it's just the userLocation. Works for me.

If you only want to zoom in once, use a initialUserLocation property to check whether the initial property was already set. I don't like using dispatch_once at all for that sort of thing