Swift：你如何將CGPoint轉換爲CLLocationCoordinate2D

Question

我有下面的代碼，並且試圖在地圖上爲longpress添加註釋。 locationInView的類型是'CGPoint'，而'annotation.coordinate'需要CLLocationCoordinate2D類型的變量。 什麼是正確的方法將CGPoint轉換爲CLLocationCoordinate2D？

func myGestureFunc(thegesture: UIGestureRecognizer) { 

     let pointOfInterest = thegesture.locationInView(self.theMap) //CGPoint 


     let annotation = MKPointAnnotation() 
     annotation.coordinate = //expects CLLocationCoordinate2D 


     theMap.addAnnotation(annotation) 

} 

Answer 1

，您應該使用convertPoint線沿線的：

let touchPoint = thegesture.locationInView(self.theMap) 
let newCoordinate = self.theMap.convertPoint(touchPoint, toCoordinateFromView:self.theMap) 
let annotation = MKPointAnnotation() 
annotation.coordinate = newCoordinate 
theMap.addAnnotation(annotation)