Question

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这是iOS 11：

在我的mapView上，我有一些注释

class POIView: MKMarkerAnnotationView {
static let REUSEIDENTIFIER = "POIView"

override var annotation: MKAnnotation? {
    willSet {
        guard let poi = newValue as? POI else { return }
        canShowCallout = true
        calloutOffset = CGPoint(x: -5, y: 5)

        let rightCalloutButton = UIButton(type: .custom)
        let rightCalloutImage = UIImage(named: "loc-map-route-line-tab")
        rightCalloutButton.setImage(rightCalloutImage, for: .normal)
        rightCalloutButton.frame = CGRect(x: 0, y: 0, width: rightCalloutImage?.size.width ?? 0, height: rightCalloutImage?.size.height ?? 0)
        rightCalloutAccessoryView = rightCalloutButton
        // some more code
        clusteringIdentifier = String(describing: POIView.self)
    }
}

}

这很好用，注释和标注显示在地图上。当我点击rightCalloutAccessoryView按钮时，将调用正确的委托方法：

public func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView,
                    calloutAccessoryControlTapped control: UIControl) {
...
}

我也有一个集群视图：

internal final class POIClusterView: MKAnnotationView {
static let REUSEIDENTIFIER = "POIClusterView"

override var annotation: MKAnnotation? {
    willSet {
        if let cluster = newValue as? MKClusterAnnotation {
            canShowCallout = true
            let rightCalloutButton = UIButton(type: .custom)
            let rightCalloutImage = UIImage(named: "loc-map-route-line-tab")
            rightCalloutButton.setImage(rightCalloutImage, for: .normal)
            rightCalloutButton.frame = CGRect(x: 0, y: 0, width: rightCalloutImage?.size.width ?? 0, height: rightCalloutImage?.size.height ?? 0)
            rightCalloutAccessoryView = rightCalloutButton
            ...
            }
        }
    }
}
}

它工作正常，显示标注，标注在右侧显示一个按钮。但是当我点击群集标注的右键时，上述方法

public func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView,
                    calloutAccessoryControlTapped control: UIControl) {
...
}

没有被调用。

我该怎么做才能检测到群集标注右键上的点击？

MapKit：不为集群调用calloutAccessoryControlTapped

0 个答案: