CLLocationManager Not Working On Device - ios

Question

I have written a basic program that uses the devices location. I have written it and this is the basics of the ViewController
override func viewDidLoad() {
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
print("Location Updated")
lat = String(format: "%f", locationManager.location!.coordinate.latitude)
long = String(format: "%f", locationManager.location!.coordinate.longitude)
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print("Failed Loc: \(error)")
}
func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
print("Auth Changed: \(status)")
}
In my info.plist I have this, as required:
<key>NSLocationWhenInUseUsageDescription</key>
<string>uses loc</string>
I ran the code on the simulator and it gives me
Failed Loc: Error Domain=kCLErrorDomain Code=0 "(null)"
I then sepcified the location of the simulator and it prints
Location Updated
as it should. Oddly; however, when i upload this onto my ios device it asks for permission and then I get no output. There are no errors that output, it doesn't even trigger didChangeAuthorizationStatus
**Edit: here is the header of the ViewController file:
import CoreLocation
class Central_ViewController: UIViewController, UIScrollViewDelegate, UITabBarDelegate, CLLocationManagerDelegate {
let locationManager = CLLocationManager()
**Edit 2:
self.locationManager.requestWhenInUseAuthorization()
if(CLLocationManager.locationServicesEnabled()) {
print("Location Services Enabled")
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.startUpdatingLocation()
}else {
print("Location Services NOT Enabled") // This needs to be completed to produce an error
}
Prints
Location Services Enabled
Location Services Enabled
Yet it still does not update location nor produce an error.

Answer 1

First you should check if NSLocationWhenInUseUsageDescription is in the appropriate Info.plist, the one for the app. This is because there are many Info.plists in a project, even the GoogleMaps framework has one.
You will notice the app will prompt you to allow obtaining locations once the proper Info.plist has the NSLocationWhenInUseUsageDescription.
Then don't use locationServicesEnabled to check if location services is allowed to be used. Use the following instead, this checks the authorization:
if CLLocationManager.authorizationStatus == .NotDetermined {
self.locationManager.requestWhenInUseAuthorization()
}
self.locationManager.startUpdatingLocation()