SWIFT 2: multiline MKPointAnnotation - swift

Question

Is there a way to create multiline annotations?
Here is my code:
1) My customAnnotation class
import UIKit
import MapKit
class CustomAnnotation: NSObject, MKAnnotation {
var title: String?
var subtitle: String?
var address: String = ""
var phoneNumber: String = ""
var workingHours: String = ""
var coordinate: CLLocationCoordinate2D
init( title: String,
subtitle: String,
address: String,
phoneNumber: String,
workingHours: String,
coordinate: CLLocationCoordinate2D ){
self.title = title
self.subtitle = subtitle
self.address = address
self.phoneNumber = phoneNumber
self.workingHours = workingHours
self.coordinate = coordinate
super.init()
}
}
2) my view controller with map:
class MapViewController: UIViewController, MKMapViewDelegate {
#IBOutlet weak var theMapView: MKMapView!
override func viewDidLoad() {
super.viewDidLoad()
let latitude: CLLocationDegrees = 54.685290
let longitude : CLLocationDegrees = 25.279661
let latDelta : CLLocationDegrees = 0.2
let lonDelta : CLLocationDegrees = 0.2
let theSpan : MKCoordinateSpan = MKCoordinateSpanMake(latDelta, lonDelta)
let branchLocation : CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude, longitude)
let theRegion : MKCoordinateRegion = MKCoordinateRegionMake(branchLocation, theSpan)
let annotation = CustomAnnotation(title: "Brach1", subtitle: "some text for B1", address: "address str 12-12", phoneNumber: "123 321 123", workingHours: "00 - 24", coordinate: branchLocation)
self.theMapView.setRegion(theRegion, animated: true)
self.theMapView.addAnnotation(annotation)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "MyPin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
var annotationView: MKPinAnnotationView? = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) as? MKPinAnnotationView
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView?.canShowCallout = true
let multiLineView = UIView(frame: CGRectMake(0, 0, 100, 40))
let label1 = UILabel(frame: CGRectMake(0,0,100,20))
label1.text = "Some text1"
multiLineView.addSubview(label1)
let label2 = UILabel(frame: CGRectMake(0,20,100,20))
label2.text = "some text2"
multiLineView.addSubview(label2)
annotationView!.rightCalloutAccessoryView = multiLineView
} else {
annotationView!.annotation = annotation
}
return annotationView
}
}
What I get:
If I would use
annotationView!.leftCalloutAccessoryView = multiLineView
I would get:
I haven't found any other methods. I would expect something like bottomCalouttAccessoryView to get something like:
That is very wired for me that the height of annotation is not amendable. (that is why my three lables don't even fit there)
I was trying to play with autoresize methods of annotationview but with no luck:(

Answer 1

The subtitle is a string that prints to a single line label, you would likely have to make a subclass in order to add multiple lines.

Answer 2

have you looked at:
How to display 2 lines of text for subtitle of MKAnnotation and change the image for the button on the right?
especially this part (I converted it to Swift for you)
var multiLineView= UIView(frame: CGRectMake(0, 0, 23, 23))
multiLineView.addSubview(lable1)
multiLineView.addSubview(lable2)
annotationView.leftCalloutAccessoryView = multiLineView
UPDATE
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView! {
var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier("pin")
if pinView == nil {
pinView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
pinView!.canShowCallout = true
// create a new View
var multiLineView= UIView(frame: CGRectMake(0, 0, 23, 23))
// add all the labels you need here
let label1 = UILabel(frame: CGRectMake(0,10,10,10))
label1.text = "Some text"
multiLineView.addSubview(label1)
let label2 = UILabel(frame: CGRectMake(0,20,10,10))
label2.text = "some text"
multiLineView.addSubview(label2)
pinView!.leftCalloutAccessoryView = multiLineView
}
else {
pinView!.annotation = annotation
}
return pinView
}

Answer 3

plz use this
i programmatically set NSLayoutConstraint.
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "MyPin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
var annotationView: MKPinAnnotationView? = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) as? MKPinAnnotationView
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView?.canShowCallout = true
let label1 = UILabel(frame: CGRectMake(0, 0, 200, 21))
label1.text = "Some text1 some text2 some text2 some text2 some text2 some text2 some text2"
label1.numberOfLines = 0
annotationView!.detailCalloutAccessoryView = label1;
let width = NSLayoutConstraint(item: label1, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.LessThanOrEqual, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 200)
label1.addConstraint(width)
let height = NSLayoutConstraint(item: label1, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 90)
label1.addConstraint(height)
} else {
annotationView!.annotation = annotation
}
return annotationView
}
}
and output