swift - (Swift) 将图片添加到我的注释标注中

Question

我需要你的帮助。我正在开发一个应用程序，它显示我的用户位置附近的一些位置。它显示了地点的名称和距离。我遇到的问题是添加图像，以便用户可以看到位置描述和图片。我该怎么做？我的代码如下...

import UIKit
import MapKit
import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

    let locationManager = CLLocationManager()

    struct Location {
    let title: String
    let latitude: Double
    let longitude: Double
    }


    let locations = [
    Location(title: "Saint Paul Hospital",     latitude: 49.280524700, longitude: -123.128232600)
    ]

    override func viewDidLoad() {
    super.viewDidLoad()

        mapita.showsUserLocation = true

        for location in locations {

        let annotation = MKPointAnnotation()
        annotation.title = location.title
        annotation.coordinate = CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude)


        if let currentLocation = locationManager.location?.coordinate {
            let locationMapPoint = MKMapPointForCoordinate(currentLocation)
            let pinMapPoint = MKMapPointForCoordinate(annotation.coordinate)


            let distance = MKMetersBetweenMapPoints(locationMapPoint, pinMapPoint)
            if distance >= 0 && distance <= 4500000 {
                let distancia: Double = round (distance / 1000)
                annotation.subtitle = "Dist. \(distancia) kilometros"
                mapita.addAnnotation(annotation)
            }
        }
    }

这就是我得到的。我需要的是将图像放在标注内

非常感谢你们的帮助!谢谢

Answer 1

试试这个:

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    if annotation is MKUserLocation { 
        return nil 
    }

    var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "pin")

    if annotationView == nil {
        annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
        annotationView!.canShowCallout = true
        annotationView!.image = UIImage(named: "sun")
    } else {
        annotationView!.annotation = annotation
    }

    return annotationView
}