Users location (blue dot) keeps turning into red pin - annotations

Question

I would like to have the users location as a blue dot while having pins also on the mapview. I would like the pins to have an annotation that has a an info button.
I can get the blue dot for users location and the enable the pins to have an annotation such as a title an subtitle. However when I go to add the info button to the red pins the users location (blue dot) turns into a red pin.
I can't seem to spot where I'm going wrong. It has something to do with the last function because this is the function that puts a the info button onto the annotation. But it also selects the users current location and turns it into a pin for some reason :(
class GetToTheStart: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
#IBOutlet weak var mapView: MKMapView!
let myLocMgr = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
myLocMgr.desiredAccuracy = kCLLocationAccuracyBest
myLocMgr.requestWhenInUseAuthorization()
myLocMgr.startUpdatingLocation()
myLocMgr.delegate = self
mapView.delegate = self
var zoo = CLLocationCoordinate2DMake(53.3562, -6.3053)
var zoopin = MKPointAnnotation()
zoopin.coordinate = zoo
zoopin.title = "dublin zoo"
zoopin.subtitle = "hello this is the zoo"
mapView.addAnnotation(zoopin)
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
// get most recient coordinate
let myCoor = locations[locations.count - 1]
//get lat & long
let myLat = myCoor.coordinate.latitude
let myLong = myCoor.coordinate.longitude
let myCoor2D = CLLocationCoordinate2D(latitude: myLat, longitude: myLong)
//set span
let myLatDelta = 0.05
let myLongDelta = 0.05
let mySpan = MKCoordinateSpan(latitudeDelta: myLatDelta, longitudeDelta: myLongDelta)
let myRegion = MKCoordinateRegion(center: myCoor2D, span: mySpan)
self.mapView.showsUserLocation = true
}
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let reuseIdentifier = "pin"
var pin = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseIdentifier) as? MKPinAnnotationView
if pin == nil {
pin = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseIdentifier)
pin!.pinColor = .Red
pin!.canShowCallout = true
pin!.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure)
} else {
pin!.annotation = annotation
}
return pin
}

Answer 1

viewForAnnotation delegate method will be called by all the annotation on the map including userLocation.
So you just check and return nil for it as shown below...
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation {
//return nil so map view draws "blue dot" for standard user location
return nil
}
let reuseIdentifier = "pin"
var pin = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseIdentifier) as? MKPinAnnotationView
if pin == nil {
pin = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseIdentifier)
pin!.pinColor = .Red
pin!.canShowCallout = true
pin!.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure)
} else {
pin!.annotation = annotation
}
return pin
}