ios - myLocationButton 未显示在 Google map 上

Question

我已按照教程中的步骤操作如何通过 Google Maps SDK 获取用户的位置。我使用了Google提供的教程，也由Ray Wenderlich提供但这没有用。位置按钮甚至不显示。

任何帮助都会很棒，谢谢。这是我的代码:

    class NearestDealerViewController: UIViewController, CLLocationManagerDelegate {

    @IBOutlet weak var mainMenuLabel: UILabel!
    @IBOutlet weak var nearestDealer: UILabel!
    @IBOutlet weak var mapView: GMSMapView!
    let locationManager = CLLocationManager()

    let transitionDelegate = TransitionDelegate()
    var delegate: NearestDealerViewControllerDelegate?

    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
        println(mapView.myLocationEnabled)
    }

    func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        if status == .AuthorizedWhenInUse {
            locationManager.startUpdatingLocation()
            mapView.myLocationEnabled = true
            mapView.settings.myLocationButton = true
        }
        println(mapView.myLocationEnabled)

    }

    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
        if let location = locations.first as? CLLocation {
            mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)
            locationManager.stopUpdatingLocation()
        }
    }

    @IBAction func backTapped(sender: AnyObject) {
        delegate?.dismissNearestDealerViewController()
    }
}

Answer 1

您应该在 viewDidLoad() 的下一行代码中放入:

mapView.isMyLocationEnabled = true