我刚刚将 XCode 更新到 6.3，现在我收到以下错误：MKPointAnnotation 没有名为“setCoordinate”的成员。
不确定它去了哪里，或者我们是否应该使用其他 MK 方法。任何帮助表示赞赏。
func refreshlocation(lat:String, lon:String, withOffset:Bool = false){
// 1 Convert the string values to something that can be used.
let location = CLLocationCoordinate2D(
latitude: (lat as NSString).doubleValue as CLLocationDegrees,
longitude: (lon as NSString).doubleValue as CLLocationDegrees
)
// 2 setup some initial variables.
let span = MKCoordinateSpanMake(
(self.locationLatitudeDelta as NSString).doubleValue as CLLocationDegrees,
(self.locationLongitudeDelta as NSString).doubleValue as CLLocationDegrees
)
let region = MKCoordinateRegion(center: location, span: span)
mapView.setRegion(region, animated: true)
//3 decorate the point and add the point to the map.
var annotation = MKPointAnnotation()
annotation.setCoordinate(location) //Error on this line
}