ios - 找不到谷歌地图 mapview.myLocation (iOS SDK)

Question

如何使用 Google Maps iOS SDK 在 map 上显示用户的位置？

我试图在 self.myMapView(MKMapView) 中找到 .myLocation 属性，但找不到。

任何人都可以逐步向我解释如何在 map 上显示我的用户位置吗？

Answer 1

像这样为 GMSMapView 和 CLLocationManager 创建属性

@IBOutlet weak var mapView: GMSMapView!

var locationManager = CLLocationManager()

var didFindMyLocation = false

并在 viewdidload 方法中为 map View 添加观察者以进行位置更新，如下所示

override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()

        let camera: GMSCameraPosition = GMSCameraPosition.cameraWithLatitude(48.857165, longitude: 2.354613, zoom: 2.0)
        mapView.camera = camera
        mapView.delegate = self

        mapView.addObserver(self, forKeyPath: "myLocation", options: NSKeyValueObservingOptions.New, context: nil)

    }

override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
        if !didFindMyLocation {
            let myLocation: CLLocation = change![NSKeyValueChangeNewKey] as! CLLocation
            mapView.camera = GMSCameraPosition.cameraWithTarget(myLocation.coordinate, zoom: 10.0)
            mapView.settings.myLocationButton = true

            didFindMyLocation = true
        }
    }

//标记:- CLLocationManagerDelegate

extension MapViewController: CLLocationManagerDelegate {
    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        if status == CLAuthorizationStatus.AuthorizedWhenInUse {
            mapView.myLocationEnabled = true
        }
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let location = locations.first {
            mapView.myLocationEnabled = true
            mapView.settings.myLocationButton = true

            mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)

            locationManager.stopUpdatingLocation()
        }

    }
}

didFindMyLocation 是 bool 属性，也不要忘记将 'NSLocationWhenInUseUsageDescription' 键添加到 Info.plist 文件中