Swift：位置管理器未更新位置？

Question

I'm trying to implement GoogleMaps but I can't even get the CLLocationManager to work. The didUpdateLocations method isn't being run. This is my controller:

import UIKit
import CoreLocation
import GoogleMaps

...

class RootMapViewController: UIViewController {

  let locationManager = CLLocationManager()

  @IBOutlet weak var mapView: GMSMapView!

  override func viewDidLoad() {
    super.viewDidLoad()

    fetchLocation()

    ...
  }

  func addMapPin(coordinates: CLLocationCoordinate2D, title: String, description: String) {
    ...
  }

  private func fetchLocation() {
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestWhenInUseAuthorization()
  }

  private func centerMapOn(userCoordinates: CLLocationCoordinate2D) {
    ...
  }

}

// MARK: CLLocationManagerDelegate

extension RootMapViewController: CLLocationManagerDelegate {

  func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    if status == .AuthorizedWhenInUse {
      print("gggggggggggggggggg") // <----------------- prints properly **** 
      locationManager.startUpdatingLocation()
      print("hhhhh")
      mapView.myLocationEnabled = true
      mapView.settings.myLocationButton = true
    }
  }

  // ISSUE ARISES HERE: *****************************************
  func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    print("zzzzzzzzzzzzzzzzzzz") // <----------------- doesn't print ****
    let userCoordinates = manager.location!.coordinate
    centerMapOn(userCoordinates)
    locationManager.stopUpdatingLocation()
  }

}

My Info.plist file has the key:

Update:

Answer 1

You have to call

locationManager.startUpdatingLocation; 

on the last line of fetchLocation() function.