mkmapview - Swift - How to ask UIGestureRecognizer function to return value -

i ask function annotation return coordinate (cllocationcoordinate2d) other function use, here's partial code:

// ulmap mapview.   override func viewdidload() {     var longpressgr = uilongpressgesturerecognizer(target: self, action: "annotation:")     longpressgr.minimumpressduration = 1     uimap.addgesturerecognizer(longpressgr) }  func annotation(gesture: uigesturerecognizer){      //coordinate     var touchpoint = gesture.locationinview(self.uimap)     var coordinate = uimap.convertpoint(touchpoint, tocoordinatefromview: self.uimap)  } 

i tried one, doesn't work:

func annotation(gesture: uigesturerecognizer) -> cllocationcoordinate2d{      //coordinate     var touchpoint = gesture.locationinview(self.uimap)     var coordinate = uimap.convertpoint(touchpoint, tocoordinatefromview: self.uimap)      return coordinate } 

is there way this? in advance.

things gesture recognizer calls can't return because aren't 1 calling them. getting called system, return value propagate through code don't have access to. should create class level variable coordinate , set that.

so instead of saying var coordinate = uimap.convertpoint(touchpoint, tocoordinatefromview: self.uimap)

you declare

var coordinate:cllocationcoordinate2d 

at class scope, , in function

coordinate = uimap.convertpoint(touchpoint, tocoordinatefromview: self.uimap) 

then coordinate set coordinate. can add them array if need keep track of more one.