Swift2 如何显示MKPointAnnotation和用户'；s在swift 2中的当前位置

我试图显示MKPointAnnotation和用户当前位置之间的路由，但失败了

我的想法是：获取用户的当前位置->获取MKPointAnnotation的坐标->与MKPolylineRenderer对齐

问题是我找不到问题（我不知道应该在哪里修改

class MapInSearch: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
    @IBOutlet weak var mapView: MKMapView!
     var destination: MKMapItem?
     var coords: CLLocationCoordinate2D?
    let locationManager = CLLocationManager()

    var PlaceLat = ""
    var PlaceLong = ""// get from previous view controller



    override func viewDidLoad() {
        super.viewDidLoad()
        self.locationManager.requestAlwaysAuthorization()

        // For use in foreground
        self.locationManager.requestWhenInUseAuthorization()

        if CLLocationManager.locationServicesEnabled() {
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
            locationManager.startUpdatingLocation()
        }// step 1 

        self.mapView.showsUserLocation = true
        self.mapView.delegate = self
       self.addRoute() // step 2
    }

    func addRoute() {
        var pointsToUse: [CLLocationCoordinate2D] = []

        if PlaceLat != "" || PlaceLong != "" {
        let coords = "\(PlaceLat), \(PlaceLong)"
        let p = CGPointFromString(coords)
        pointsToUse += [CLLocationCoordinate2DMake(CLLocationDegrees(p.x), CLLocationDegrees(p.y))]
        }
      pointsToUse += [CLLocationCoordinate2DMake(CLLocationDegrees(coords!.latitude), CLLocationDegrees(coords!.longitude))]
        let myPolyline = MKPolyline(coordinates: &pointsToUse, count: 2)
        mapView.addOverlay(myPolyline)

    }

    func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer {
            let lineView = MKPolylineRenderer(overlay: overlay)
            lineView.strokeColor = UIColor.greenColor()
            return lineView // step 3 
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
      self.coords = manager.location!.coordinate
        print("locations = \(coords!.latitude) \(coords!.longitude)")
    }

---

我的代码非常混乱，因为我混合了4-5个教程。此外，这些教程是用swift 1.2编写的。（我曾尝试将其编辑为swift 2，但失败）

您解决过您的问题吗？在您看来，使用XCode 7.3中最新的swift 2迭代（我们称之为MyViewController）：

然后在同一文件中：

extension MyViewController: MKMapViewDelegate {
    func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer {
        let pr = MKPolylineRenderer(overlay: overlay);
        pr.strokeColor = UIColor.blueColor().colorWithAlphaComponent(0.5);
        pr.lineWidth = 5;
        return pr;
    }
}

---

您可能会发现最重要的部分是扩展。我尚未测试此代码，因此请随时更正出现的任何问题。

在您的

CLLocationManagerDelegate

委托函数

didUpdateLocations

中，您可以通过设置

self.myLocation=位置[0]作为CLLocation

然后调用

MakeRoute（）

-这是我编写的一个函数，它可以通过汽车或步行来创建路线（因此是

self.driveIsSet

）

extension MyViewController: MKMapViewDelegate {
    func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer {
        let pr = MKPolylineRenderer(overlay: overlay);
        pr.strokeColor = UIColor.blueColor().colorWithAlphaComponent(0.5);
        pr.lineWidth = 5;
        return pr;
    }
}

func makeRoute()  {
        let startPlaceMark = MKPlacemark(coordinate: myLocation.coordinate)
        let endPlaceMark = MKPlacemark(coordinate: restLocation.coordinate)

        let startMapItem = MKMapItem(placemark: startPlaceMark)
        let endMapItem = MKMapItem(placemark: endPlaceMark)

        let directionRequest = MKDirectionsRequest()
        directionRequest.source = startMapItem
        directionRequest.destination = endMapItem
        if self.driveIsSet {
            directionRequest.transportType = .automobile
        } else {
            directionRequest.transportType = .walking
        }


        let directions = MKDirections(request: directionRequest)
        directions.calculate { (routeResponse, routeError) in
            guard let routeResponse = routeResponse else {
                if let routeError = routeError {
                    print(routeError)
                }
                return
            }
            self.mapView.removeOverlays(self.mapView.overlays)
            let route = routeResponse.routes[0]
            self.mapView.add(route.polyline, level: .aboveRoads)
        }
    }