UILongPressGestureRecognizer가 두 번 반환되는 이유

Question

다음 코드는 2 초 동안 눌러도 값을 두 번 인쇄합니다.

언제든지 내가 두 번 실행하는 것처럼 보입니다. 아무도 왜 이런지 알 수 있습니까?

func action(gestureRecognizer:UIGestureRecognizer){ 
    var touchPoint = gestureRecognizer.locationInView(self.myMap); 
    var newCo = myMap.convertPoint(touchPoint, toCoordinateFromView: self.myMap); 
    var annotation = MKPointAnnotation(); 
    annotation.coordinate = newCo; 
    var loc = CLLocation(latitude: newCo.latitude, longitude: newCo.longitude); 
      CLGeocoder().reverseGeocodeLocation(loc, completionHandler: {(placemarks, error)->Void in 
     let pm:CLPlacemark = placemarks[0] as CLPlacemark; 

     var address = pm.locality + " ," + pm.postalCode + " ," + pm.administrativeArea + " ," + pm.country; 
     annotation.title = address; 
     self.myMap.addAnnotation(annotation); 
     println(address); 
     println("\(newCo.latitude)"); 
     println("\(newCo.longitude)"); 
     //places.append(["name:":address, "lat": "\(newCo.latitude)", "lon":"\(newCo.longitude)"]); 
    }) 


} 

Answer 1

UIGestureRecognizer의 상태 속성을 확인하면 아마 시작과 끝 모두를 알 수 있습니다.

enum UIGestureRecognizerState : Int { 
    case Possible 
    case Began 
    case Changed 
    case Ended 
    case Cancelled 
    case Failed 
} 

Answer 2

func action(gestureRecognizer:UIGestureRecognizer) { 
    print("Gesture Recognized") 

    if gestureRecognizer.state == UIGestureRecognizerState.Ended { 
     let touchPoint = gestureRecognizer.locationInView(self.map) 
     let newCoordinate:CLLocationCoordinate2D = self.map.convertPoint(touchPoint, toCoordinateFromView: self.map) 
     print(newCoordinate) 
     listNewCoordinates.append(newCoordinate) 
     let annotation = MKPointAnnotation() 
     annotation.coordinate.longitude = newCoordinate.longitude 
     annotation.coordinate.latitude = newCoordinate.latitude 

     self.map.addAnnotation(annotation) 
    } 

}