MKPinAnnotation to Detailed view - ios

Question

I have an object array from a PFQuery and then add MKPinAnnotations in my mapView with the following function:
func addAnnotation() {
for (var i = 0; i < self.objectArray.count; i++) {
var location = object.objectForKey("location") as PFGeoPoint
var annotation = MKPointAnnotation()
annotation.setCoordinate(CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude))
annotation.title = object.objectForKey("title") as NSString
var priceFormatter = NSNumberFormatter()
self.mapView.addAnnotation(annotation)
}
}
I have want to be able to click on the pin (or the information tab that shows when the pin is tapped) and segue to a detail view controller and pass the information associated with that pin or that index place in the Array...
I only need to know how to get the index number of the tapped pin so I can perform the segue...I've been stuck in this piece of code for the past 3 days and gave up and decided to ask the masters :P
Hope you can help me out please.
Thanks

Answer 1

Create a custom class for your annotation where you can store additional information such as the array index:
class PinAnnotation : NSObject, MKAnnotation {
private var coord: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0, longitude: 0)
var coordinate: CLLocationCoordinate2D {
get {
return coord
}
}
var title: String = ""
var subtitle: String = ""
var index: Int = 0
func setCoordinate(newCoordinate: CLLocationCoordinate2D) {
self.coord = newCoordinate
}
}
later in your code you can set the array index:
func addAnnotation() {
for (var i = 0; i < self.objectArray.count; i++) {
var location = object.objectForKey("location") as PFGeoPoint
var annotation = PinAnnotation()
annotation.setCoordinate(CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude))
annotation.title = object.objectForKey("title") as NSString
annotation.index = i
var priceFormatter = NSNumberFormatter()
self.mapView.addAnnotation(annotation)
}
}
You have access to all the properties when you are working with the annotation object