Question

如何使用Google Maps iOS SDK在地图上显示用户的位置？

我尝试在.myLocation中找到self.myMapView(MKMapView)属性，但我找不到它。

有人可以一步一步地向我解释如何在地图上显示我的用户位置吗？

Answer 1

为GMSMapView和CLLocationManager创建属性，如

@IBOutlet weak var mapView：GMSMapView！

var locationManager = CLLocationManager（）

var didFindMyLocation = false

并在viewdidload方法中为地图视图添加观察者，以便进行位置更新，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
        }
    }

// MARK： - 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，也不要忘记添加＆＃39; NSLocationWhenInUseUsageDescription＆＃39; Info.plist文件的关键

Answer 2

此代码将标记设置为所需的协调。您可以通过CoreLocation框架（CLLocationManagerDelegate）获取的当前位置坐标

self

找不到Google Maps mapview.myLocation（iOS SDK）

2 个答案: