CLLocationManager不调用委托

Question

我知道这已经回答了，但是最近没有。我正在AppDelegate中设置我的locationManager，如下所示：

import UIKit
import CoreData
import CoreLocation

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate {

    var locationManager:CLLocationManager?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.

        //get user permission to use location data
        locationManager = CLLocationManager()
        locationManager?.delegate = self
        locationManager?.requestWhenInUseAuthorization()
        locationManager?.desiredAccuracy = kCLLocationAccuracyBest
        locationManager?.startUpdatingLocation()

        return true
    }
...

extension AppDelegate {

    //MARK: -  Location Management

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        if status == .authorizedWhenInUse {
            print("location monitoring allowed!")
        }
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print(error.localizedDescription)
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [AnyObject]!) {
           let location = locations.last as! CLLocation
           //lblLocation.text = String(location.coordinate.latitude) + " " + String(location.coordinate.longitude)

           print("*** locationManager Called! ***");
       }


}

didChangeAuthorization被调用，但没有其他代表。我已经在sim卡中尝试过此操作，将其设置为在系留设备上的伦敦位置，并在无系留设备上设置了该应用程序，什么也没有。我确信我缺少简单的东西，任何帮助将不胜感激。

编辑：忘记提及我的plist中始终有隐私设置，用于位置和使用时设置。