Sending picked image to another view - ios

Question

Im working with Mapkit. In the leftcalloutaccessory, there is a small image, thats been taken from the userlocation. In the rightcalloutaccesory, there is a button, that will make a segue, to another viewcontroller, so the user can see the image in large size.
The issue is - it is random which saved image, that will be shown on the another view.
class ImageAnnotation: MKPointAnnotation {
var image: UIImage?
}
Then in the Map view controller it looks like this
var imageAnnotations: [ImageAnnotation] = []
var sendImage: UIImageView!
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
guard let annotation = annotation as? ImageAnnotation else {
return nil
}
let identifier = "MyCustomAnnotation"
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView?.canShowCallout = true
} else {
annotationView!.annotation = annotation
}
let image = UIImage(named: "advance.png")
let button = UIButton(type: .DetailDisclosure)
button.frame = CGRectMake(0, 0, 30, 30)
button.setImage(image, forState: .Normal)
annotationView?.rightCalloutAccessoryView = button
let detailImage = UIImageView(frame: CGRectMake(0, 0, 50, 50))
detailImage.image = annotation.image
sendImage.image = annotation.image
annotationView?.leftCalloutAccessoryView = detailImage
return annotationView
}
It works. Its showing the right image in every annotation. But "pickedimage", can be every saved images.
override func viewDidAppear(animated: Bool) {
super.viewWillAppear(animated)
for annotation in imageAnnotations {
mapView.addAnnotation(annotation)
}
gettingData()
}
func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl)
{
if (view.annotation is MKPointAnnotation) {
print("Clicked annotation ")
if control == view.rightCalloutAccessoryView {
sendImage.image = UIImage(named: "advance.png")
}
}
}
func buttonPressed (sender: UIButton!) {
let currentImage: UIImage = sender.imageForState(.Normal)!
sendImage.image = currentImage
self.performSegueWithIdentifier("ShowLargeImage", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "ShowLargeImage" {
let goToImageViewController = segue.destinationViewController as! ImageViewController
goToImageViewController.newImage = sendImage.image
}
}

Answer 1

In destination view controller:
class ImageViewController: UIViewController
{
#IBOutlet weak var finalImage: UIImageView! // assume that its your imageViewname
var newImage: UIImage! // assume that it is pass Image
override func viewDidLoad() {
super.viewDidLoad()
if let img = newImage
{
finalImage.image = img
}
}
}
In Source view controller:
//create one Common ImageView
var sendImage: UIImageView!
func buttonPressed (sender: UIButton!) {
self.performSegueWithIdentifier("ShowLargeImage", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "ShowLargeImage" {
let goToImageViewController = segue.destinationViewController as! ImageViewController
goToImageViewController.newImage = sendImage.image // directly pass the image no need of converson
}
}
at the same time add here also
let detailImage = UIImageView(frame: CGRectMake(0, 0, 50, 50))
detailImage.image = annotation.image
sendImage.image = annotation.image
annotationView?.leftCalloutAccessoryView = detailImage
updated answer
func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl)
{
if (view.annotation is MKPointAnnotation) {
print("Clicked annotation ")
if control == view.rightCalloutAccessoryView {
sendImage.image = UIImage(named: "advance.png")
}
}
}