Longer subtitles in MapView annotations (swift)

问题:

I have a mapView with annotations displaying titles and subtitles. The subtitles are sometimes longer than the width of the annotation, so I am wondering if i can make them multiline? It's coded like this so far:

func annotate(newCoordinate, title: String, subtitle: String) {     let annotation = MKPointAnnotation()     annotation.coordinate = newCoordinate     annotation.title = title     annotation.subtitle = subtitle     self.map.addAnnotation(annotation)     } 

Then i have a few options set in

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {...} 

which are not relevant here.

Is it posible to make a custom annotation view? I've tried a couple of things, but nothing worked. The closest I can get is adding a button to display the longer subtitle separately, but i'd rather have it inside the annotation.

Is it possible?

回答1:

I figured it out, I added a label in viewForAnnotation and it just worked

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {      if annotation is MKUserLocation {         //return nil so map view draws "blue dot" for standard user location         return nil     }      let reuseId = "pin"      var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView     if pinView == nil {         pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)         pinView!.canShowCallout = true     }     else {         pinView!.annotation = annotation     }      //THIS IS THE GOOD BIT     let subtitleView = UILabel()     subtitleView.font = subtitleView.font.fontWithSize(12)     subtitleView.numberOfLines = 0     subtitleView.text = annotation.subtitle!     pinView!.detailCalloutAccessoryView = subtitleView       return pinView } 

文章来源: Longer subtitles in MapView annotations (swift)