使用MapKit Swift在两个坐标之间绘制路径

时间:2017-11-12 15:57:37

标签: ios swift xcode maps

关于这个问题的SO的所有答案都是使用Objective-c,或者使用Swift 2.我有两个点,第一个坐标是(lat,long),第二个坐标是坐标。纬度,coordinates.longitude)。这是我迄今为止所能得到的,但我仍有两个问题:

Value of type 'MKDirectionsRequest' has no member 'setSource'
Value of type 'MKDirectionsRequest' has no member 'setDestination'

我从这个页面获得此代码的任何方式:http://studyswift.blogspot.com/2014/10/mkdirections-draw-route-from-location.html

到目前为止,这是我的代码:

@IBOutlet weak var myMap: MKMapView!
var myRoute : MKRoute?

viewDidLoad内我有以下内容:

let directionsRequest = MKDirectionsRequest()
        let markFirstPoint = MKPlacemark(coordinate: CLLocationCoordinate2DMake(lat, long), addressDictionary: nil)
        let markSecondPoint = MKPlacemark(coordinate: CLLocationCoordinate2DMake(coordinates.latitude, coordinates.longitude), addressDictionary: nil)
        directionsRequest.setSource(MKMapItem(placemark: markSecondPoint))
        directionsRequest.setDestination(MKMapItem(placemark: markFirstPoint))
        directionsRequest.transportType = MKDirectionsTransportType.automobile
        let directions = MKDirections(request: directionsRequest)
        directions.calculate { (response:MKDirectionsResponse!, error: Error!) -> Void in
            if error == nil {
                self.myRoute = response.routes[0] as? MKRoute
                self.myMap.add((self.myRoute?.polyline)!)
            }
        }

viewDidLoad我之后:

 func mapView(mapView: MKMapView!, rendererForOverlay overlay: MKOverlay!) -> MKOverlayRenderer! {
        var myLineRenderer = MKPolylineRenderer(polyline: (myRoute?.polyline)!)
        myLineRenderer.strokeColor = UIColor.red
        myLineRenderer.lineWidth = 3
        return myLineRenderer
    }

有什么方法可以让这段代码起作用吗?

1 个答案:

答案 0 :(得分:3)

只需查看MKDirectionsRequest的文档即可。有source属性和destination属性。

行:

directionsRequest.setSource(MKMapItem(placemark: markSecondPoint))
directionsRequest.setDestination(MKMapItem(placemark: markFirstPoint))

成为:

directionsRequest.source = MKMapItem(placemark: markSecondPoint)
directionsRequest.destination = MKMapItem(placemark: markFirstPoint)