Pass Image from Map Annotation to Details View Controller - ios

Question

I have class with the name Capital in the separate swift file. In my (ViewController) I declare location, image, title and etc for each of the pins on the map. When pin is tapped calloutAccessoryControlTapped pops up and it directs me to my DetailsViewController, where I passed the title of the tapped pin, but I can't pass an image...
let Headquarters = Capital(title: "Headquarters", coordinate: CLLocationCoordinate2D(latitude: (some latitude), longitude: (some longitude) ), info: "Our headquarters", image: "Location1")
And then I have my perfectly working segue from ViewController to DetailViewController
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showDetails" {
let theDestination:DetailsViewController = segue.destinationViewController as! DetailsViewController
theDestination.toPass = (sender as! MKAnnotationView).annotation!.title! } }
My Class Capital
import MapKit
import UIKit
class Capital: NSObject, MKAnnotation {
var title: String?
var coordinate: CLLocationCoordinate2D
var info: String
var image: String?
init(title: String, coordinate: CLLocationCoordinate2D, info: String, image: String) {
self.title = title
self.coordinate = coordinate
self.info = info
self.image = image
}
}
And that's how I have it in the ViewController(declaring them)
let Headquarters = Capital(title: "Headquarters", coordinate: CLLocationCoordinate2D(latitude: (some coordinate), longitude: (some coordinate)), info: "Our headquarters", image: "Location1")
And there are several more of them
mapView.addAnnotations([Headquarters, BlahBlah, OtherStuff])
Then I put them into pins
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "Capital"
if annotation.isKindOfClass(Capital.self) {
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil {
annotationView = MKAnnotationView(annotation:annotation, reuseIdentifier:identifier)
annotationView!.canShowCallout = true
annotationView!.image = UIImage(named: "pin")
let btn = UIButton(type: .DetailDisclosure)
annotationView!.rightCalloutAccessoryView = btn
} else {
annotationView!.annotation = annotation
}
let cpa = annotation as! Capital
annotationView!.image = UIImage(named:cpa.image!)
return annotationView
}
return nil
}
And then I'm trying to pass image to DetailsViewController

Answer 1

I don't see where you are passing the image in your prepareForSegue, did you load it in your detailViewController ?
First I would declare a variable in the detailVC :
var image: UIImage?
and then I would pass the image in your ViewController :
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showDetails" {
let theDestination:DetailsViewController = segue.destinationViewController as! DetailsViewController
theDestination.toPass = (sender as! MKAnnotationView).annotation!.title!
theDestination.image = UIImage(named :"your-image-name")
}
}
And then in the viewDidLoad of the detailVC I would set my variable image to my IBOutlet ImageView :
override func viewDidLoad(){
self.imageView.image = self.image
}