sheet - menu ios

Pin personalizado de la imagen en anotaciónView en iOS

Question

Estoy intentando cambiar de Swift 1.2 a Swift 2.0 y estoy al final de los cambios. Actualmente estoy haciendo cambios en el MapViewController, y no hay ningún error o advertencia, pero la imagen personalizada para mi pin (annotationView) no está asignada al pin y muestra la imagen predeterminada (punto rojo).

Aquí está mi código, espero que pueda ayudarme con algún consejo porque creo que todo está bien pero aún no funciona:

func parseJsonData(data: NSData) -> [Farmacia] {
let farmacias = [Farmacia]()
do
{
let jsonResult = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary
// Parse JSON data
let jsonProductos = jsonResult?["farmacias"] as! [AnyObject]
for jsonProducto in jsonProductos {
let farmacia = Farmacia()
farmacia.id = jsonProducto["id"] as! String
farmacia.nombre = jsonProducto["nombre"] as! String
farmacia.location = jsonProducto["location"] as! String
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(farmacia.location, completionHandler: { placemarks, error in
if error != nil {
print(error)
return
}
if placemarks != nil && placemarks!.count > 0 {
let placemark = placemarks?[0]
// Add Annotation
let annotation = MKPointAnnotation()
annotation.title = farmacia.nombre
annotation.subtitle = farmacia.id
annotation.coordinate = placemark!.location!.coordinate
self.mapView.addAnnotation(annotation)
}
})
}
}
catch let parseError {
print(parseError)
}
return farmacias
}
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "MyPin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
// Reuse the annotation if possible
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil
{
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView!.canShowCallout = true
}
annotationView!.image = UIImage(named: "custom_pin.png")
let detailButton: UIButton = UIButton(type: UIButtonType.DetailDisclosure)
annotationView!.rightCalloutAccessoryView = detailButton
print(annotationView!.image)
return annotationView
}

Gracias por adelantado,

Saludos.

Answer 1

Aquí está la respuesta:

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "MyPin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
let detailButton: UIButton = UIButton(type: UIButtonType.DetailDisclosure)
if let annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView.canShowCallout = true
annotationView.image = UIImage(named: "custom_pin.png")
annotationView.rightCalloutAccessoryView = detailButton
}
else {
annotationView.annotation = annotation
}
return annotationView
}

Saludos

Answer 2

La respuesta aceptada no funciona, ya que tiene una annotationView Vista sin inicializar en el bloque else .

Aquí hay una mejor solución. Seque la vista de anotación si es posible o crea una nueva si no:

Swift 3, 4 :

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
// Don''t want to show a custom image if the annotation is the user''s location.
guard !(annotation is MKUserLocation) else {
return nil
}
// Better to make this class property
let annotationIdentifier = "AnnotationIdentifier"
var annotationView: MKAnnotationView?
if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationView(withIdentifier: annotationIdentifier) {
annotationView = dequeuedAnnotationView
annotationView?.annotation = annotation
}
else {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
annotationView?.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)
}
if let annotationView = annotationView {
// Configure your annotation view here
annotationView.canShowCallout = true
annotationView.image = UIImage(named: "yourImage")
}
return annotationView
}

Swift 2.2 :

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
// Don''t want to show a custom image if the annotation is the user''s location.
guard !annotation.isKindOfClass(MKUserLocation) else {
return nil
}
let annotationIdentifier = "AnnotationIdentifier"
var annotationView: MKAnnotationView?
if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(annotationIdentifier) {
annotationView = dequeuedAnnotationView
annotationView?.annotation = annotation
}
else {
let av = MKAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
av.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure)
annotationView = av
}
if let annotationView = annotationView {
// Configure your annotation view here
annotationView.canShowCallout = true
annotationView.image = UIImage(named: "yourImage")
}
return annotationView
}

Answer 3

SWIFT 3,4

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation.isKind(of: MKUserLocation.self) {
return nil
}
let annotationIdentifier = "AnnotationIdentifier"
var pinView = mapView.dequeueReusableAnnotationView(withIdentifier: annotationIdentifier)
if (pinView == nil) {
pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
}
pinView?.canShowCallout = false
return pinView
}