title: How do I overlay a circle at a set location using mapkit and swift
body: <p>I am having trouble trying to figure out how to display a transparent circle or rectangle at a desired location unique from the users location. Im a beginner with mapkit so thanks in advance.</p>
  
  <pre><code>class FirstViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate
  {
  
  @IBOutlet weak var mapView: MKMapView!
  
  let locationManager = CLLocationManager()
  
  override func viewDidLoad()
  {
      super.viewDidLoad()
  
      self.locationManager.delegate = self
      self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
      self.locationManager.requestAlwaysAuthorization()
      self.locationManager.startUpdatingLocation()
      self.mapView.showsUserLocation = true
  
  }
  
  func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
  {
      let location = locations.last
      let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
      let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
      self.mapView.setRegion(region, animated: true)
      self.locationManager.stopUpdatingLocation()//
  }
  
  func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
  {
      print("Errors: " + error.localizedDescription)
  }
  
  }
  </code></pre>