ios - MapView doesn't work anymore if I add a GestureRecognizer -

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i'm trying add pin @ map when user longpress (with uilongpressgesturerecognizer), doesn't work. however, bigger problem is: map isn't displayed anymore. why map has disappeared?

you find project-file here

---------------------------viewcontroller.swift--------------------------------

{  import uikit import mapkit  class viewcontroller: uiviewcontroller, mkmapviewdelegate {  @iboutlet var themapview: mkmapview! @iboutlet var thetextfield: uitextfield!  @iboutlet var thelabel: uilabel!  @ibaction func thebutton(sender: uibutton) {     thelabel.text = "swift-app schreibt \(thetextfield.text)"     thetextfield.resignfirstresponder() }   override func viewdidload() {     super.viewdidload()     // additional setup after loading view, typically nib.     // position     var latitude:cllocationdegrees = 48.399193     var longitude:cllocationdegrees = 9.993341     // zoomfaktor     var latdelta:cllocationdegrees = 0.01     var longdelta:cllocationdegrees = 0.01     //      var thespan:mkcoordinatespan = mkcoordinatespanmake(latdelta,longdelta)        // koordinaten der kirche     var churchlocation:cllocationcoordinate2d = cllocationcoordinate2dmake(latitude, longitude)     // zentrum und kartenausschnitt     var theregion:mkcoordinateregion = mkcoordinateregionmake(churchlocation, thespan)       // longtap definieren     let longpress = uilongpressgesturerecognizer(target: themapview, action: "actionpin:")     longpress.minimumpressduration = 1.0     longpress.numberoftouchesrequired = 1     longpress.allowablemovement = 100     themapview.addgesturerecognizer(longpress)       // karte anzeigen     themapview.setregion(theregion,animated:false)      // pin setzen     var theulmminsterannotation = mkpointannotation()     theulmminsterannotation.coordinate = churchlocation     theulmminsterannotation.title = "ulmer münster"     theulmminsterannotation.subtitle = " untertitel"      themapview.addannotation(theulmminsterannotation) }  func actionpin(gesturerecognizer:uigesturerecognizer) {     var touchpoint = gesturerecognizer.locationinview(self.themapview)     var newcoord:cllocationcoordinate2d=themapview.convertpoint(touchpoint, tocoordinatefromview: self.themapview)     var newannotation = mkpointannotation()     newannotation.coordinate = newcoord     newannotation.title = "fingertipp"     newannotation.subtitle = "untertitel"     themapview.addannotation(newannotation) }  }}

because map size it's {0,0} , not using constrain.

check here project minor update https://dl.dropboxusercontent.com/u/19438780/test1-v2.zip


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