如何在 Swift 中向 MKPointAnnotation 添加按钮 [英] How to add button to MKPointAnnotation in Swift
本文介绍了如何在 Swift 中向 MKPointAnnotation 添加按钮的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我希望能够在我的地图注释上放置一个按钮和标签.带有标题、副标题和坐标的注释效果很好,但我无法显示按钮.
I want to be able to put a button and label on my map annotation. The annotation with the title, subtitle, and coordinates works perfectly, but I can't get a button to appear.
func drawEvents(_ loc: CLLocation, title1: String)
{
mapView.delegate = self//
let center = CLLocationCoordinate2D(latitude: loc.coordinate.latitude, longitude: loc.coordinate.longitude)
let lat: CLLocationDegrees = center.latitude
let long: CLLocationDegrees = center.longitude
self.pointAnnotation1 = MKPointAnnotation()
self.pointAnnotation1.title = title1
self.pointAnnotation1.subtitle = "Event"
self.pointAnnotation1.coordinate = CLLocationCoordinate2D(latitude: lat, longitude: long)
self.pinAnnotationView = MKPinAnnotationView(annotation: self.pointAnnotation1, reuseIdentifier: nil)
self.mapView.addAnnotation(self.pinAnnotationView.annotation!)
}
推荐答案
这可以通过向 MKPinAnnotationView
的 rightCalloutAccessoryView
添加一个 UIButton 来实现.下面是一个例子:
This can be accomplished by adding a UIButton to the rightCalloutAccessoryView
of the MKPinAnnotationView
.
Here is an example:
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if !(annotation is MKUserLocation) {
let pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: String(annotation.hash))
let rightButton = UIButton(type: .contactAdd)
rightButton.tag = annotation.hash
pinView.animatesDrop = true
pinView.canShowCallout = true
pinView.rightCalloutAccessoryView = rightButton
return pinView
}
else {
return nil
}
}
这就是它的样子:
希望能帮到你!
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