iOS: MapView Annotations not showing for pins - ios

Question

For some odd reason the viewForAnnotation is only working for the pin that is set in viewDidLoad (this is a test pin). The pins that are loaded elsewhere aren't getting annotated when pressed. I've already set the delegate. I think it has something to do with the identifier in the mapView call? But I'm unsure of how to fix it. Any help is appreciated! Thanks!
Here's my code:
import Foundation
import UIKit
import MapKit
import CoreLocation
import Alamofire
class MapViewController: UIViewController, MKMapViewDelegate {
var locationManager:CLLocationManager = CLLocationManager()
#IBOutlet weak var potholeMapView: MKMapView!
var listData: Array<String> = []
var idData: Array<Int> = []
var descriptionData: Array<String> = []
var latitudeData:Array<Double> = []
var longitudeData:Array<Double> = []
override func viewDidLoad() {
super.viewDidLoad()
potholeMapView.delegate = self
locationManager.requestWhenInUseAuthorization()
potholeMapView!.region = sanDiegoCountyLocation()
potholeMapView!.mapType = MKMapType.Standard
potholeMapView!.showsUserLocation = true
potholeMapView!.showsTraffic = true
print(potholeMapView!.userLocationVisible)
// WORKING HERE ACCESSORY VIEW SHOWS
let encinitas = CLLocationCoordinate2DMake(32.955, -117.2459)
let marker = AnnotatedLocation(
coordinate: encinitas,
title: "There",
subtitle: "You are not here")
potholeMapView!.addAnnotation(marker)
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
//HERE ACCESSORY VIEWS DONT SHOW
loadPotholeData()
}
func sanDiegoCountyLocation()-> MKCoordinateRegion {
let center = CLLocationCoordinate2DMake(32.76572795, -117.07319880 )
let widthMeters:CLLocationDistance = 100
let heightMeters:CLLocationDistance = 1000*120
return MKCoordinateRegionMakeWithDistance(center, widthMeters, heightMeters)
}
func loadPotholeData(){
let url = "http://bismarck.sdsu.edu/city/fromDate"
let parametersGet = ["type" : "street", "user" : "008812"]
Alamofire.request(.GET, url, parameters: parametersGet)
.responseJSON { response in
if let dataGet = response.result.value {
let dataDict:NSArray = dataGet as! NSArray
for item in dataDict{
let descrip = item["created"]
self.listData.append(descrip!! as! String)
let ids = item["id"]
self.idData.append(ids! as! Int)
let description = item["description"]
self.descriptionData.append(description!! as! String)
let latitude = item["latitude"]
self.latitudeData.append(latitude as! Double)
let longitude = item["longitude"]
self.longitudeData.append(longitude as! Double)
}
}
else {
print("There was some error getting data")
}
}
createAllPins()
}
func createAllPins(){
for (x, y) in zip(self.latitudeData, self.longitudeData) {
let location = CLLocationCoordinate2DMake(x, y)
let marker = AnnotatedLocation(
coordinate: location,
title: "",
subtitle: "")
potholeMapView!.addAnnotation(marker)
}
}
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
if let annotation = annotation as? AnnotatedLocation {
let identifier = "pin"
var view: MKPinAnnotationView
if let dequeuedView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
as? MKPinAnnotationView {
dequeuedView.annotation = annotation
view = dequeuedView
} else {
view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
//view = MKPinAnnotationView(annotation: <#T##MKAnnotation?#>, reuseIdentifier: <#T##String?#>)
view.canShowCallout = true
view.calloutOffset = CGPoint(x: -5, y: 5)
view.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure)
}
return view
}
return nil
}
func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
self.performSegueWithIdentifier("pushAnnotation", sender: view)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let identifier = segue.identifier {
switch identifier {
case "pushAnnotation":
let nextVC = segue.destinationViewController as! MapAnnotationDetailViewController
//nextVC.
default: break
}
}
}
}

Answer 1

It appears that it is because your title and subtitle for the others are blank. I tested out having nothing in quotations and adding something, and that seems to fix that issue.

Answer 2

For me, it was that after specifying my custom mapView.mapType, I had to also tell the mapView to "showAnnotations".
Until I told it to show them, the annotations would not display.
mapView.mapType = mapTypes[Preference.mapType]
mapView.showAnnotations(mapView.annotations, animated: true) //this fixed it