Nrthugu

I have a problem when I tried to add a route in my Sygic offline map view. In the debugger, I got this message " Routing interface: Asking for unknown transport mode." this the code that I wrote:

   class SygicMapViewController: UIViewController, SYNavigationDelegate,SYRoutingDelegate,SYMapViewDelegate,CLLocationManagerDelegate{

    let mapView = SYMapView()

    let routing = SYRouting()

    var  locationManager = CLLocationManager()

    override func viewDidLoad() {

        super.viewDidLoad()

        mapView.delegate = self

        locationManager.delegate = self

        locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation

        locationManager.requestAlwaysAuthorization()

        locationManager.requestWhenInUseAuthorization()

        locationManager.startUpdatingLocation()

    }

    func setupMapView(){

        let tiltFor2D: SYAngle = 0

        mapView.tilt = tiltFor2D

        mapView.zoom = 12

        mapView.rotation = 180

        mapView.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height:self.view.frame.size.height+20)

        self.view.addSubview(mapView)

        mapView.renderEnabled = true

    }

    func addMarkers(){



    }

    func mapView(_ mapView: SYMapView, didFinishInitialization success: Bool) {

        setupMapView()

        SYNavigation.shared().delegate = self

        routing.delegate = self

        let startPoint = SYGeoCoordinate(latitude: 37.270665, longitude:  9.873921)

        let endPoint = SYGeoCoordinate(latitude: 37.242681, longitude: 9.911932)

        computeRoute(from: startPoint!, to: endPoint!)

    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {

        print(error)

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    func computeRoute(from fromCoordinate: SYGeoCoordinate, to toCoordinate:

        SYGeoCoordinate) {

        let startWaypoint = SYWaypoint(position: fromCoordinate, type: .start, name: "Begin")

        let endWaypoint = SYWaypoint(position: toCoordinate, type: .end, name: "End")

        let routingOptions = SYRoutingOptions()

        routingOptions.transportMode = .unknown// For other options see SYTransportMode

        routingOptions.routingType = .economic// For other options see SYRoutingType

        routing.computeRoute(startWaypoint, to: endWaypoint, via: nil, with: routingOptions)

    }



    func routing(_ routing: SYRouting, computingFailedWithError error: SYRoutingError) {

        print(error)

    }



    func routing(_ routing: SYRouting, didComputePrimaryRoute route: SYRoute?) {

        SYNavigation.shared().start(with: route)

        // You might want to put it also on the map

        let mapRoute = SYMapRoute(route: route!, type: .primary)

        mapView.add(mapRoute)

        mapView.cameraMovementMode = .followGpsPosition

    }

}

I correct the issue by selecting the local routing variable in the computeRoute method and I made some changes to fire the computeRoute method after the mapview Intialization

I actually see two issues with your code.

1. In func computeRoute(from fromCoordinate: SYGeoCoordinate, to
toCoordinate: SYGeoCoordinate) you define local variable routing
   which hides instance variable. This causes the routing to be
   deallocated before it can compute any route. So just remove that
   let routing = SYRouting() from that method and use instance
   routing variable.


2. The other one can also be an issue and cause problems. You start
   routing in viewDidLoad before map is initialised. Then if the
   routing is faster you will be adding SYRoute object to map and
   that would probably crash. I know this is just some quick setup, but
   to avoid any issues move that call to computeRoute at least to
   mapView(_, didFinishInitialization) method.