krip1.swift

//----------------------------------------------------------------------------------
// new class

//  MyMKPointAnnotation.swift
//  ChatMap
//
//  Created by Don Mag on 2/15/17.
//  Copyright © 2017 Chris. All rights reserved.
//

import Foundation
import MapKit

class MyMKPointAnnotation: MKPointAnnotation {

	public var myTag: Int = 0
	
}

//----------------------------------------------------------------------------------
// in  ViewController.swift

// in func updateUI()
// change
//   let annotation = MKPointAnnotation()
// to
    let annotation = MyMKPointAnnotation()
		annotation.myTag = i
            
// in func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
// change
//	  var annotationView =  MKPinAnnotationView()
//	  annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "\(value)")
// to		
		let myAnnot = annotation as! MyMKPointAnnotation
		let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "\(myAnnot.myTag)")

// see if that helps...