無法分配CGPoint到CLLocationCoordinate2D

Question

var touchPoint = gestuRerecognizer.locationInView(self.map) 
var newCoordinate = map.convertPoint(touchPoint, fromCoordinateSpace: self.map) 
var annotation = MKPointAnnotation() 
annotation.coordinate = newCoordinate 

此代碼給我（不能鍵入「CGPoint」的值賦給類型「CLLocationCoordinate2D」值）錯誤。

Answer 1

它應該是：

let newCoordinate = map.convertPoint(touchPoint, toCoordinateFromView:self.map) 
annotation.coordinate = newCoordinate 

相反的：

var newCoordinate = map.convertPoint(touchPoint, fromCoordinateSpace:self.map) 

，因爲它返回你一個CGPoint，而不是一個CLLocationCoordinate2D，這會導致當你將newCoordinate到annotation.coordinate錯誤。