Swift iOS google Map，坐标路径

Question

我正在尝试在我的应用程序中创建一个函数，将用户引导至我创建的标记。 这是我正在使用的代码，效果很好，它可以获取用户当前位置并将其显示在地图上。但是我怎样才能获得到标记的路线呢？

任何遮阳篷都会有所帮助

class Karta: UIViewController, CLLocationManagerDelegate {
    @IBOutlet var mapView: GMSMapView!

    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        //allow app to track user
        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()

        //set out a marker on the map
        var marker = GMSMarker()
        marker.position = CLLocationCoordinate2DMake(56.675907, 12.858798)
        marker.appearAnimation = kGMSMarkerAnimationPop
        marker.icon = UIImage(named: "flag_icon")
        marker.map = mapView
     }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "Types Segue" {
            let navigationController = segue.destinationViewController as UINavigationController
        }
    }

    func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {

        //If map is being used
        if status == .AuthorizedWhenInUse {
            var myLocation = mapView
            locationManager.startUpdatingLocation()
            mapView.myLocationEnabled = true
            mapView.settings.myLocationButton = true
        }
    }

    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()
        }
    }
}

Answer 1

所以我最近刚刚解决了这个问题，这是我使用最新版本的 Alamofire (4.3) 实现的 Swift 3

 func fetchMapData() { 

    let directionURL = "https://maps.googleapis.com/maps/api/directions/json?" +
        "origin=\(originAddressLat),\(originAddressLng)&destination=\(destinationAddressLat),\(destinationAddressLong)&" +
    "key=YOUROWNSERVERKEY"



    Alamofire.request(directionURL).responseJSON
        { response in

            if let JSON = response.result.value {

                let mapResponse: [String: AnyObject] = JSON as! [String : AnyObject]

                let routesArray = (mapResponse["routes"] as? Array) ?? []

                let routes = (routesArray.first as? Dictionary<String, AnyObject>) ?? [:]

                let overviewPolyline = (routes["overview_polyline"] as? Dictionary<String,AnyObject>) ?? [:]
                let polypoints = (overviewPolyline["points"] as? String) ?? ""
                let line  = polypoints

                self.addPolyLine(encodedString: line)
        }
    }

}

func addPolyLine(encodedString: String) {

    let path = GMSMutablePath(fromEncodedPath: encodedString)
    let polyline = GMSPolyline(path: path)
    polyline.strokeWidth = 5
    polyline.strokeColor = .blue
    polyline.map = whateverYourMapViewObjectIsCalled

}

Answer 2

免责声明：Swift 2

 func addOverlayToMapView(){

        let directionURL = "https://maps.googleapis.com/maps/api/directions/json?origin=\(srcLocation.coordinate.latitude),\(srcLocation.coordinate.longitude)&destination=\(destLocation.coordinate.latitude),\(destLocation.coordinate.longitude)&key=Your Server Key"

        Alamofire.request(.GET, directionURL, parameters: nil).responseJSON { response in

            switch response.result {

            case .Success(let data):

                let json = JSON(data)
                print(json)

                let errornum = json["error"]


                if (errornum == true){



                }else{
                    let routes = json["routes"].array

                    if routes != nil{

                        let overViewPolyLine = routes![0]["overview_polyline"]["points"].string
                        print(overViewPolyLine)
                        if overViewPolyLine != nil{

                         self.addPolyLineWithEncodedStringInMap(overViewPolyLine!)

                        }

                    }


                }

            case .Failure(let error):

                print("Request failed with error: \(error)")

            }
        }

    }

使用点，我们现在使用fromEncodedPath从两个点创建路径

  func addPolyLineWithEncodedStringInMap(encodedString: String) {

        let path = GMSMutablePath(fromEncodedPath: encodedString)
        let polyLine = GMSPolyline(path: path)
        polyLine.strokeWidth = 5
        polyLine.strokeColor = UIColor.yellowColor()
        polyLine.map = mapView

    }

Answer 3

与 Apple 的 MapKit 不同，适用于 iOS 的 Google Maps SDK 本身不包含执行路线计算的方法。

相反，您需要使用 Google Directions API：https://developers.google.com/maps/documentation/directions/。它是一个仅支持 HTTP 的 API，Google 至今未提供任何 SDK，但您可以轻松地自己编写自己的包装器，或者选择 Github 上提供的众多选项之一：

• https://github.com/sudeepjaiswal/GoogleDirections
• https://github.com/sebk/GoogleDirections
• https://github.com/iamamused/iOS-DirectionKit
• https://github.com/marciniwanicki/OCGoogleDirectionsAPI
• 还有许多其他...

Answer 4

非常简单 如果您在您的 iOS 项目中添加了 Google 地图 SDK，并且如果您想在两个不同方向之间实现获取 google 地图方向线，我将使用 swift 2.3 以简单的方式理解为演示代码，请尝试、修改并使用它。！！ ！

注意：不要忘记更改您想要的 lat long 和 API 密钥（您可以在 Google API Manager 凭据部分使用无限制的 API 密钥）

 func callWebService(){

        let url = NSURL(string: "https://maps.googleapis.com/maps/api/directions/json?origin=\(18.5235),\(73.7184)&destination=\(18.7603),\(73.8630)&key=AIzaSyDxSgGQX6jrn4iq6dyIWAKEOTneZ3Z8PtU")
        let request = NSURLRequest(URL: url!)
        let config = NSURLSessionConfiguration.defaultSessionConfiguration()
        let session = NSURLSession(configuration: config)

        let task = session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in

            // notice that I can omit the types of data, response and error
            do{
                if let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary {

                    //print(jsonResult)

                    let routes = jsonResult.valueForKey("routes")
                    //print(routes)

                    let overViewPolyLine = routes![0]["overview_polyline"]!!["points"] as! String
                    print(overViewPolyLine)

                    if overViewPolyLine != ""{

                        //Call on Main Thread
                        dispatch_async(dispatch_get_main_queue()) {

                            self.addPolyLineWithEncodedStringInMap(overViewPolyLine)
                        }


                    }

                }
            }
            catch{

                print("Somthing wrong")
            }
        });

        // do whatever you need with the task e.g. run
        task.resume()
    }

    func addPolyLineWithEncodedStringInMap(encodedString: String) {


        let camera = GMSCameraPosition.cameraWithLatitude(18.5204, longitude: 73.8567, zoom: 10.0)
        let mapView = GMSMapView.mapWithFrame(CGRect.zero, camera: camera)
        mapView.myLocationEnabled = true

        let path = GMSMutablePath(fromEncodedPath: encodedString)
        let polyLine = GMSPolyline(path: path)
        polyLine.strokeWidth = 5
        polyLine.strokeColor = UIColor.yellowColor()
        polyLine.map = mapView

        let smarker = GMSMarker()
        smarker.position = CLLocationCoordinate2D(latitude: 18.5235, longitude: 73.7184)
        smarker.title = "Lavale"
        smarker.snippet = "Maharshtra"
        smarker.map = mapView

        let dmarker = GMSMarker()
        dmarker.position = CLLocationCoordinate2D(latitude: 18.7603, longitude: 73.8630)
        dmarker.title = "Chakan"
        dmarker.snippet = "Maharshtra"
        dmarker.map = mapView

        view = mapView

    }