CLLocation Manager check requestAlwaysAuthorization and if not accept exit app - ios

Question

I have requestAlwaysAuthorization and I need to track users every time if user doesn't accept to requestAlwaysAuthorization I want to do exit in app ?
How can I do it ?
My codes under below.
import CoreLocation
public var locationManager = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
locationManager.delegate = self
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let altitudeG = locations.last?.altitude
let longitudeG = locations.last?.coordinate.longitude
let latitudeG = locations.last?.coordinate.latitude
print("\(altitudeG) \(longitudeG) \(latitudeG)")
}

Answer 1

In error case this delegatemethod is called:
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print(error)
// handle not authorized error here. You might want to quit on specific errors (unauthorized) only. Check the error.
UIControl().sendAction(#selector(URLSessionTask.suspend), to: UIApplication.shared, for: nil)
}
You can also check the current permissions state before letting CLLocationManager fail:
if CLLocationManager.locationServicesEnabled() {
switch(CLLocationManager.authorizationStatus()) {
case .notDetermined, .restricted, .denied:
print("No access")
case .authorizedAlways, .authorizedWhenInUse:
print("Access")
}
} else {
print("Location services are not enabled")
}
taken from this answer.
Opinion based: I consider quitting the app instead of giving the user a understandable feedback very bad UX.

Answer 2

Above answer is also good, I just tried to make it bit easy way with methods. Also, if you are working with hardware devices like beacons then you must access the location AuthorizedAlways.
Check if location services are enabled
public func isLocationEnabled()-> Bool {
if CLLocationManager.locationServicesEnabled() {
switch(CLLocationManager.authorizationStatus()) {
case .NotDetermined, .Restricted, .Denied , .AuthorizedWhenInUse :
showLocationServiceNotEnabledAlert()
return false
case .AuthorizedAlways: // As of now we check for only "Always", not for "When In Use" this should be fixed according to the requirements
return true
}
}
return false
}
Alert For User to on the service And redirect to Settings
func showLocationServiceNotEnabledAlert() {
let title = "Your Title"
let message = "Your Message"
let alertController = UIAlertController(title: title, message: message, preferredStyle: .Alert)
let settingsAction = UIAlertAction(title: "Settings".localized, style: .Default) { (alertAction) in
if let appSettings = NSURL(string: UIApplicationOpenSettingsURLString) {
UIApplication.sharedApplication().openURL(appSettings)
}
}
alertController.addAction(settingsAction)
let cancelAction = UIAlertAction(title: "Cancel".localized, style: .Cancel, handler: nil)
alertController.addAction(cancelAction)
UIApplication.sharedApplication().delegate?.window!?.currentViewController?.presentViewController(alertController, animated: true, completion: nil)
}