MKMapView 检测左或右

Question

iOS 11.x Swift 4.0

了解 mapview 并使用此代码创建了一个带有左右 accessoryview 的图钉。

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {

    if annotation is MKUserLocation  {
        return nil
    }

    let reuseId = "pin"
    var pav:MKPinAnnotationView?
    if (pav == nil)
    {
        pav = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
        pav?.isDraggable = true
        pav?.canShowCallout = true;
        pav?.rightCalloutAccessoryView = UIButton(type: .infoLight)
        pav?.leftCalloutAccessoryView = UIButton(type: .contactAdd)
    }
    else
    {
        pav?.annotation = annotation;
    }

    return pav;
}

使用此调用检测何时按下 infoLight and/or contactAdd UIButtons。但我很难弄清楚如何分辨按下了哪个？这个电话火了？但是怎么判断是左手还是右手呢？

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    print("go figure annotationView \(view)")
    if (view.rightCalloutAccessoryView != nil) {
        print("right \(view.rightCalloutAccessoryView)")
    }
}

显然这是错误的，但是如何知道点击的是左边还是右边？

Answer 1

您可以将控件转换为 UIButton 并检查其类型

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

    let btn  = control as! UIButton

    if(btn.buttonType == .infoLight)
    { 
        // right Accessory
    }
    else
    { 
        // left Accessory
    }

}

Answer 2

试试下面的代码：

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    if view.rightCalloutAccessoryView == control {
        //right accessory
    } else {
        // left Accessory
    }
}

MKMapView 检测左或右

MKMapView detecting left or right

mkmapview

accessoryview

ios

swift