Answer by Burhanuddin Sunelwala for NMACoreRouter calculateRouteWithStops no callback (swift)

Found the solution!

You need to declare NMACoreRouter object as a class variable.

class <Class_Name> {    var coreRouter: NMACoreRouter!    func <Your_Function>() {        coreRoute = NMACoreRouter()        let startPoint = NMAGeoCoordinates(latitude: latitude1, longitude: longitude1)        let waypoint1 = NMAWaypoint(geoCoordinates: startPoint)        let middlePoint = NMAGeoCoordinates(latitude: latitude2, longitude: longitude2)        let waypoint2 = NMAWaypoint(geoCoordinates: middlePoint, waypointType: NMAWaypointType.ViaWaypoint)        let endPoint = NMAGeoCoordinates(latitude: latitude3, longitude: longitude3)        let waypoint3 = NMAWaypoint(geoCoordinates: endPoint, waypointType: NMAWaypointType.StopWaypoint)        let stopList = [waypoint1, waypoint2, waypoint3] // I have also tried adding the NMAGeoCoordinates to array but still no callback        let routingMode = NMARoutingMode(routingType: NMARoutingType.Fastest, transportMode: NMATransportMode.Car, routingOptions: 0)        coreRoute.calculateRouteWithStops(stopList, routingMode: routingMode) { (routeResult: NMARouteResult?, error: NMARoutingError?) in            if error == nil && routeResult != nil && routeResult!.routes.count > 0 {                let route = routeResult!.routes.first as! NMARoute                let mapRoute = NMAMapRoute(route: route)                self.mapView.addMapObject(mapRoute)            } else {                // Handle error                }        }          }    }   

EDIT: Navigation Code

let navigationManager = NMANavigationManager.sharedNavigationManager()navigationManager.delegate = selfnavigationManager.map = mapViewnavigationManager.startTurnByTurnNavigationWithRoute(route)navigationManager.startTrackingWithTransportMode(.Car)//SimulationsharedPositioningManager.dataSource = NMARoutePositionSource(route: route)