razvan razvan - 2 months ago 8
iOS Question

NMACoreRouter calculateRouteWithStops no callback (swift)

I'm trying to create a route using Here API in Swift but I'm having some issues because the completion block is never called so I cannot know exactly what is the problem.
Here is my code:

let 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
}
}


Does anyone have any idea about this problem?

P.S. There is no problem with the app id, app code and license key. The NMAApplicationContext is successfully set in AppDelegate

Answer

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    
            }
        }      
    }    
}