iOS 11 中的新 MapKit MarkerAnnotationView 问题

Question

我在使用 MKAnnotationView 时遇到问题。我编写了下面嵌入的代码来显示我的 pin，它可以工作，但我从不希望显示字幕，所以我将 var subtitleVisibility: MKFeatureVisibility 写入 .hidden，如我的代码所示。虽然它仍然出现，就像 subtitleVisibility 是 .adaptive ... 怎么了？在此先感谢您的帮助！弗洛！

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    if #available(iOS 11.0, *) {
        guard let annotation = annotation as? Bike else { return nil }

        let identifier = "marker"
        var view: MKMarkerAnnotationView

        if let dequeuedView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier)
            as? MKMarkerAnnotationView {
            dequeuedView.annotation = annotation
            view = dequeuedView
        } else {
            view = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: identifier)
            view.canShowCallout = false
            view.markerTintColor = self.userBike.markerTintColor
            view.glyphImage = self.userBike.glyphImage
        }
        view.subtitleVisibility = MKFeatureVisibility.hidden
        view.animatesWhenAdded = true
        return view
    } else {
        let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "pin-annotation")

        annotationView.animatesDrop = true
        annotationView.canShowCallout = true
        return nil
    }
}

Answer 1

当 subtitleVisibility 设置为 false 时，它只会在未选择标记时停止显示文本。选择标记后，将显示字幕。

MKMarkerAnnotationView subtitleVisibility 文档：

The subtitle text is hidden when the marker is not selected. The text is shown when the marker is selected.

iOS 11 中的新 MapKit MarkerAnnotationView 问题

Issue with new MapKit MarkerAnnotationView in iOS 11

xcode

mapkit

ios

swift

ios11