MKPointAnnotations touch event in swift - swift

Question

I would like to know if anyone can tell me how I can touch a pin on the map in the form of MKPointAnnotations .
I would like to click the pin on the map and go to another view by bringing back the variables of the pin that I have preset .
Can anyone explain me this thing in Swift ?
thanks
Edit with code:
class ViewController: UIViewController, MKMapViewDelegate {
#IBOutlet weak var mappa: MKMapView!
override func viewDidLoad() {
super.viewDidLoad()
var location : CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 44.648590, longitude: 10.918794)
let pinAnnotation = PinAnnotation()
pinAnnotation.setCoordinate(location)
self.mappa.addAnnotation(pinAnnotation)
}
class PinAnnotation : NSObject, MKAnnotation {
private var coord: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0, longitude: 0)
var coordinate: CLLocationCoordinate2D {
get {
return coord
}
}
var title: String = "test"
var subtitle: String = "test"
func setCoordinate(newCoordinate: CLLocationCoordinate2D) {
self.coord = newCoordinate
}
}
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is PinAnnotation {
let pinAnnotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "myPin")
pinAnnotationView.pinColor = .Purple
pinAnnotationView.draggable = true
pinAnnotationView.canShowCallout = true
pinAnnotationView.animatesDrop = true
let deleteButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
deleteButton.frame.size.width = 44
deleteButton.frame.size.height = 44
deleteButton.backgroundColor = UIColor.redColor()
deleteButton.setImage(UIImage(named: "trash"), forState: .Normal)
pinAnnotationView.leftCalloutAccessoryView = deleteButton
return pinAnnotationView
}
return nil
}
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
if let annotation = view.annotation as? PinAnnotation {
self.mapView.removeAnnotation(annotation)
}
}
}

Answer 1

Several steps are necessary, here are some code snippets to get you started.
First you need a custom class for your pin annotation which holds the data you want to work with.
import MapKit
import Foundation
import UIKit
class PinAnnotation : NSObject, MKAnnotation {
private var coord: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0, longitude: 0)
private var _title: String = String("")
private var _subtitle: String = String("")
var coordinate: CLLocationCoordinate2D {
get {
return coord
}
}
func setCoordinate(newCoordinate: CLLocationCoordinate2D) {
self.coord = newCoordinate
}
var title: String? {
get {
return _title
}
set (value) {
self._title = value!
}
}
var subtitle: String? {
get {
return _subtitle
}
set (value) {
self._subtitle = value!
}
}
}
Then you need a custom class for your MKMapView which conforms to the MKMapViewDelegate protocol. Implement the method viewForAnnotation there:
import MapKit
import CLLocation
import Foundation
import UIKit
class MapViewController: UIViewController, MKMapViewDelegate {
...
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is PinAnnotation {
let pinAnnotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "myPin")
pinAnnotationView.pinColor = .Purple
pinAnnotationView.draggable = true
pinAnnotationView.canShowCallout = true
pinAnnotationView.animatesDrop = true
let deleteButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
deleteButton.frame.size.width = 44
deleteButton.frame.size.height = 44
deleteButton.backgroundColor = UIColor.redColor()
deleteButton.setImage(UIImage(named: "trash"), forState: .Normal)
pinAnnotationView.leftCalloutAccessoryView = deleteButton
return pinAnnotationView
}
return nil
}
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
if let annotation = view.annotation as? PinAnnotation {
mapView.removeAnnotation(annotation)
}
}
That gives you something like this:
To add a new annotation to your map use this somewhere in your code:
let pinAnnotation = PinAnnotation()
pinAnnotation.setCoordinate(location)
mapView.addAnnotation(pinAnnotation)

Answer 2

Greate work !!! BUT..
I just copy past this and I had to add a few changes. I'll share with you guys those changes.
import MapKit
import Foundation
import UIKit
class PinAnnotation : NSObject, MKAnnotation {
private var coord: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0, longitude: 0)
private var _title: String = String("")
private var _subtitle: String = String("")
var title: String? {
get {
return _title
}
set (value) {
self._title = value!
}
}
var subtitle: String? {
get {
return _subtitle
}
set (value) {
self._subtitle = value!
}
}
var coordinate: CLLocationCoordinate2D {
get {
return coord
}
}
func setCoordinate(newCoordinate: CLLocationCoordinate2D) {
self.coord = newCoordinate
}
}
I hope it will help :D