如何修复：无法分配类型的值＆＃39; CLLocationDegrees＆＃39; （又名＆＃39; Double＆＃39;）键入＆＃39; Float！＆＃39;在Swift 3中

Question

我从谷歌地图中得到一个坐标，我想把它分配给一个浮点变量，但它显示了这个错误：

  

无法指定类型的值＆＃39; CLLocationDegrees＆＃39; （又名＆＃39; Double＆＃39;）输入   ＆＃39;浮动＆＃39！;

func markerButtonClicked(sender:MapButton) {
 let coord = self.getCenterCoordinate()
    let addressObj = Address()
    addressObj.latitude  = coord.latitude 
    addressObj.longitude = coord.longitude
}
func getCenterCoordinate() -> (CLLocationCoordinate2D) {
    let location = CGPoint(x:self.mView.bounds.size.width/2,y:self.mView.bounds.size.height/2)
    let coord = self.mView.projection .coordinate(for: location)
    return coord
}    

class Address: NSObject {
    var latitude:Float!
    var longitude:Float!
}

Answer 1

将您的值转换为float，然后指定

addressObj.latitude  = Float(coord.latitude)
addressObj.longitude = Float(coord.longitude)