ios - 如何使用MapKit在Swift 3中更改图钉颜色

Question

下面是我的代码，列出了1个注释针。现在是红色的。我怎样才能使它变蓝？我需要放一个扩展文件吗？代码还包括当前用户的位置。我也可以把注释变成一个按钮吗？

import UIKit
import MapKit
import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate {

@IBOutlet var map: MKMapView!

let manager = CLLocationManager()


func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    let location = locations[0]
    let span: MKCoordinateSpan = MKCoordinateSpanMake(1.0, 1.0)
    let myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)
    let region:MKCoordinateRegion = MKCoordinateRegionMake(myLocation, span)

    map.setRegion(region, animated: true)

    print(location.altitude)
    print(location.speed)

    self.map.showsUserLocation = true

}




override func viewDidLoad() {
    super.viewDidLoad()

    manager.delegate = self
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.requestWhenInUseAuthorization()
    manager.startUpdatingLocation()

    let location:CLLocationCoordinate2D = CLLocationCoordinate2DMake(37.5656, -122.443)
    let annoation = MKPointAnnotation()

           annoation.coordinate = location
    annoation.title = "MYSHOP"
    annoation.subtitle = "Come Visit"
    map.addAnnotation(annoation)

}


}

Answer 1

我知道这个问题已经有一段时间了，但是我记得我在创建自定义pin颜色时遇到了问题，所以也许将来有人可以使用它。MKPinAnnotationColor已被弃用，因此如果您想要不是红色、绿色或紫色的管脚，则需要创建自己的颜色。可以通过创建MKPinAnnotationView的扩展并定义新颜色来实现。例如，如果您想要蓝色别针：

 extension MKPinAnnotationView {
     class func bluePinColor() -> UIColor {
         return UIColor.blue
     }
 }

然后将颜色指定给批注：

 MKPinAnnotationView.bluePinColor()