无法将CGPoint分配给CLLocationCoordinate2D

Question

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

此代码使我（无法将类型'CGPoint'的值分配给'CLLocationCoordinate2D'类型的值）错误。

Answer 1

应该是：

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

而不是：

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

因为它会向您返回CGPoint，而不是CLLocationCoordinate2D，这会在您将newCoordinate分配给annotation.coordinate时导致错误。