阻止手势通过地图的注释视图

它有一个程序生成的手势识别器。

问题是,偶尔,点击注释,也(或相反)进入地图。

我附上了演示,归结为一个丑陋的,简单的ViewController(看截图,看看它看起来像什么)。

如果你用它创建了一个应用程序,然后在底部的正方形上反复单击/点击(它们在单击/点击时改变颜色),地图就会放大。

防止注释下的手势识别器在注释中获取事件(甚至双击)的最佳方法是什么?

把你的眼睛藏起来。这会很有趣:

import UIKit
import MapKit

class ViewController: UIViewController, MKMapViewDelegate {
    @IBOutlet weak var mapView: MKMapView!

    override func viewDidLoad() {
        super.viewDidLoad()
        let washingtonMonument = CLLocationCoordinate2D(latitude: 38.8895, longitude: -77.0353)
        let annotation = GestureAnnotation()
        annotation.coordinate = washingtonMonument
        self.mapView.addAnnotation(annotation)
        let washingtonRegion = MKCoordinateRegion(center: washingtonMonument, span: MKCoordinateSpan(latitudeDelta: 0.5, longitudeDelta: 0.5))
        self.mapView.setRegion(washingtonRegion, animated: false)
    }

    func mapView(_ inMapView: MKMapView, viewFor inAnnotation: MKAnnotation) -> MKAnnotationView? {
        if let annotation = inAnnotation as? GestureAnnotation {
            return annotation.viewObject
        }
        return nil
    }
}

class GestureTargetView: UIView {
    let colors = [UIColor.red, UIColor.yellow, UIColor.black, UIColor.green]
    var tapGestureRecognizer: UITapGestureRecognizer?
    var currentColorIndex = 0

    override func layoutSubviews() {
        if nil == self.tapGestureRecognizer {
            self.tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(type(of: self).handleTap))
            self.addGestureRecognizer(self.tapGestureRecognizer!)
        }
        self.backgroundColor = self.colors[0]
    }

    @objc func handleTap(sender: UITapGestureRecognizer) {
        if .ended == sender.state {
            self.currentColorIndex += 1
            if self.currentColorIndex == self.colors.count {
                self.currentColorIndex = 0
            }
            self.backgroundColor = self.colors[self.currentColorIndex]
        }
    }
}

class GestureAnnotationView: MKAnnotationView {
    var gestureView: GestureTargetView!

    override func prepareForDisplay() {
        self.frame = CGRect(origin: CGPoint.zero, size: CGSize(width: 128, height: 128))
        if nil == self.gestureView {
            self.gestureView = GestureTargetView(frame: self.frame)
            self.addSubview(self.gestureView)
        }
        super.prepareForDisplay()
    }
}

class GestureAnnotation: NSObject, MKAnnotation {
    var myView: GestureAnnotationView!
    var coordinate: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0, longitude: 0)
    var viewObject: MKAnnotationView! {
        get {
            if nil == self.myView {
                self.myView = GestureAnnotationView(annotation: self, reuseIdentifier: "")
            }

            return self.myView
        }
    }
}