How to know if user rejected the Location Services in Swift 2 - swift2

Question

I'm trying to make location service app and i have the following code so when the user goes to that view controller he will get an alert of getting the current location.
This is the code
override func viewDidLoad() {
super.viewDidLoad()
// 1. status is not determined
if CLLocationManager.authorizationStatus() == .NotDetermined {
locationManager.requestAlwaysAuthorization()
}
// 2. authorization were denied
else if CLLocationManager.authorizationStatus() == .Denied {
SwiftSpinner.hide()
let alert = UIAlertController(title: "Error with Your Location" , message: "Location services were previously denied. Please enable location services for this app in Settings.", preferredStyle: UIAlertControllerStyle.Alert)
let ok = UIAlertAction(title: "OK", style: UIAlertActionStyle.Default) {
UIAlertAction in
UIApplication.sharedApplication().openURL(NSURL(string: UIApplicationOpenSettingsURLString)!)
}
alert.addAction(ok)
let cancel = UIAlertAction(title: "Back", style: UIAlertActionStyle.Default) {
UIAlertAction in
self.movenav("arxiki")
}
alert.addAction(cancel)
self.presentViewController(alert, animated: true, completion: nil)
}
// 3. we do have authorization
else if CLLocationManager.authorizationStatus() == .AuthorizedAlways {
locationManager.startUpdatingLocation()
}
self.navigationController?.setNavigationBarHidden(false, animated: true)
self.eventsTable.backgroundColor = UIColor.lightGrayColor()
// self.locationManager.requestAlwaysAuthorization()
if CLLocationManager.locationServicesEnabled() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
locationManager.startUpdatingLocation()
}
}
My question is the following.
If the user pushes "Do not authorise" How can i get his option so i can send him back to the previous view controller or to alert him with the message that i have?

Answer 1

In order to catch the user selection you need to declare a CLLocationManager object and implement its delegate (CLLocationManagerDelegate) and use the following method for catching it.
func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
if status == .Denied || status == .NotDetermined{
// User selected Not authorized
}
}
I assume you have already configured the info.plist with the suitable locations parameters.
Hope it helps!