I'm trying to add a UIView as the leftCalloutAccessoryView of a MapKitAnnotation but the textlabel I add to the UIView is not being shown and I don't understand why?
let orderInfoView = UIView(frame: CGRectMake(0, 0, 100, annotationView!.frame.size.height))
orderInfoView.backgroundColor = UIColor.blackColor()
let textLabel = UILabel(frame: CGRectMake(0, 0, 100, 10))
textLabel.text = "Foobar"
textLabel.textAlignment = .Center
orderInfoView.addSubview(textLabel)
annotationView?.leftCalloutAccessoryView = orderInfoView
[UPDATE]
This was the piece of code which broke it, changing it to a numerical constant made it work.
annotationView!.frame.size.height
