MKPolyLine isn't showing up on iOS app in Swift 2.0 - ios

Question

I'm creating a sort of direction/GPS app and so far everything has been sort of easy.
I've figured out how to find the user's location (with their permission of course)
I've managed to allow them to set a destination in a quick easy way
However, I've run into a small issue. What I want is for the user to select their destination on the screen and the app will give them the fastest way to arrive there.
Here's my ViewController:
class ViewController: UIViewController,MKMapViewDelegate,CLLocationManagerDelegate {
#IBOutlet var mapOfMaps: MKMapView!
let locationManager = CLLocationManager()
var center:CLLocationCoordinate2D!
var SourcePM:MKPlacemark!
let sourcePlacemark: MKPlacemark! = nil
override func viewDidLoad() {
super.viewDidLoad()
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
self.mapOfMaps.showsUserLocation = true
let sourceAnnotation = MKPointAnnotation()
if let location = locationManager.location {
sourceAnnotation.coordinate = location.coordinate
}
let longPress = UILongPressGestureRecognizer(target: self, action: #selector(CardioViewController.action(_:)))
longPress.minimumPressDuration = 1.0
mapOfMaps.addGestureRecognizer(longPress)
//directionRequest
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location = locations.last
center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.003, longitudeDelta: 0.003))
self.mapOfMaps.setRegion(region, animated: true)
self.locationManager.stopUpdatingLocation()
SourcePM = MKPlacemark(coordinate: center, addressDictionary: nil)
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print("ERROr " + error.localizedDescription)
}
func action(gestureRecognizer:UIGestureRecognizer) {
let touchPoint = gestureRecognizer.locationInView(self.mapOfMaps)
let newCoord:CLLocationCoordinate2D = mapOfMaps.convertPoint(touchPoint, toCoordinateFromView: self.mapOfMaps)
let newAnotation = MKPointAnnotation()
newAnotation.coordinate = newCoord
newAnotation.title = "Your Destination"
mapOfMaps.addAnnotation(newAnotation)
let anotPM = MKPlacemark(coordinate: newAnotation.coordinate, addressDictionary: nil)
let source = MKMapItem(placemark: SourcePM)
let dstn = MKMapItem(placemark: anotPM)
let directionRequest = MKDirectionsRequest()
directionRequest.source = source
directionRequest.destination = dstn
directionRequest.transportType = .Automobile
// Calculate the direction
let directions = MKDirections(request: directionRequest)
// 8.
directions.calculateDirectionsWithCompletionHandler() {
(response, error) in
if(error == nil && response != nil) {
for route in response!.routes {
var r: MKRoute = route as! MKRoute
self.mapOfMaps.addOverlay(r.polyline, level: MKOverlayLevel.AboveRoads)
}
}
let route = response!.routes[0]
self.mapOfMaps.addOverlay((route.polyline), level: MKOverlayLevel.AboveLabels)
let rect = route.polyline.boundingMapRect
self.mapOfMaps.setRegion(MKCoordinateRegionForMapRect(rect), animated: true)
}
}
func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer {
let renderer = MKPolylineRenderer(overlay: overlay)
renderer.strokeColor = UIColor.orangeColor()
renderer.alpha = 1
renderer.lineWidth = 4.0
return renderer
}
}
to help walk you through my code. My user will press and hold the destination on the map and the app will add an annotation and it should give the route. However, all that happens is the annotation will be added to the map, and the map will adjust to show both locations(user's location and annotation location) but no route.

Answer 1

This may not be the 'ideal' solution, but it's worth noting that both locationManager functions can't work at the same time. I tried commenting one of the locationManager functions out and low and behold the other worked perfectly