Question

当我点击注释视图和this behavior it's right时，也会调用我的calloutAccessoryControlTapped。但是我如何检测用户是否点击了正确的配件视图（在我的情况下是详细信息披露按钮）而不只是在视图中？

我添加了一个简单的检查，但它不起作用。

import UIKit
import MapKit

extension MapVC: MKMapViewDelegate, CLLocationManagerDelegate
{    
    func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl)
    {
        if control == view.rightCalloutAccessoryView
        {
            ... // enter here even if I tapped on the view annotation and not on button
        }
    }

}

Answer 1

要实现它，您需要为正确的附件视图添加目标。您可以通过将按钮设置为 rightCalloutAccessoryView 来实现它，如代码段中所示。

class MapViewController: UIViewController, MKMapViewDelegate {

    func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
        if annotation is Annotation {
            let annotationView = AnnotationView(annotation: annotation, reuseIdentifier: "reuseIdentifier")
            let rightButton = UIButton(type: .DetailDisclosure)
            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(_:)), forControlEvents: .TouchUpInside)
            annotationView.rightCalloutAccessoryView = rightButton
        }
        return nil
    }

    func didClickDetailDisclosure(button: UIButton) {
        // TODO: Perform action when was clicked on right callout accessory view.
    }
}

// Helper classes.
class Annotation: NSObject, MKAnnotation {
    var coordinate: CLLocationCoordinate2D
    var title: String?
    var subtitle: String?

    init(coordinate: CLLocationCoordinate2D, title: String, subtitle: String) {
        self.coordinate = coordinate
        self.title = title
        self.subtitle = subtitle
    }
}

class AnnotationView: MKAnnotationView {

}

Answer 2

使用UIView和UITapGestureRecognizer代替UIControl

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
  let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "reuseIdentifier")
  let gestureView = UIView(frame:CGRect(x: 0,y: 0,width: 20,height: 20))
  let gestureRecognizer = UITapGestureRecognizer()
  gestureRecognizer.addTarget(self, action:  #selector(MapViewController.didClickGestureRecognizer(_:)))

  gestureView.addGestureRecognizer(gestureRecognizer)
  gestureView.backgroundColor = UIColor.redColor()
  annotationView.rightCalloutAccessoryView = gestureView
  return annotationView
}    

func didClickGestureRecognizer(sender:UITapGestureRecognizer) -> Void {
  print("didClickGestureRecognizer")
}

当您点击rightCalloutAccessoryView时，系统只会调用didClickGestureRecognizer，但无法调用任何人calloutAccessoryControlTapped。

2.如果你有一个UIControl rightCalloutAccessoryView，你可以直接点击MKAnnotationView.Otherwise MKAnnotationView无法点击。
当您点按calloutAccessoryControlTapped或直接点按MKAnnotationView

rightCalloutAccessoryView

3.如果你有一个leftCalloutAccessoryView的UIControl，当你点击它时，你的选择器和calloutAccessoryControlTapped都会被调用。

4.从iOS 9开始，您可以在MKAnnotationView中使用detailCalloutAccessoryView。只有当您点击它时，您的选择器才会被调用。

5.此外，您还可以创建自己的自定义MKAnnotationView，并更改其行为。

检测calloutAccessoryControlTapped仅点击rightCalloutAccessoryView

2 个答案: