Mapbox标注附件

Question

我想知道Mapbox是否有其他标注按钮而不仅仅是提供的七个按钮？

let button = UIButton(type: .detailDisclosure) 

或者，如果有快速修复将这些UIButtons转换为UIImages以创建我自己的按钮。

Answer 1

是的，您可以使用方法func mapView(_ mapView: MGLMapView, leftCalloutAccessoryViewFor annotation: MGLAnnotation) -> UIView?和func mapView(_ mapView: MGLMapView, rightCalloutAccessoryViewFor annotation: MGLAnnotation) -> UIView?来创建自己的。按钮类型设置为.custom

例如：

func mapView(_ mapView: MGLMapView, leftCalloutAccessoryViewFor annotation: MGLAnnotation) -> UIView? { 
    // We're not concerned with the user annotation. 
    guard annotation is CameraAnnotation || annotation is NoteAnnotation else { 
     return nil 
    } 
    // Callout height is fixed; width expands to fit its content. 
    let deleteButton = UIButton(type: .custom) 
    deleteButton.frame = CGRect(x: 0, y: 0, width: 50, height: 50) 
    deleteButton.setImage(UIImage(named: "delete"), for: .normal) 
    deleteButton.tag = 100 
    return deleteButton 
}