ios - UITapGestureRecogniser in GMSMapView -

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i creating app using swift. in 1 of viewcontroller, have gmsmapview create programatically. want user have capability triggering action when clicking on map.

what have done : 

import uikit  class mapviewcontroller: uiviewcontroller, gmsmapviewdelegate {  let mapview = gmsmapview()  override func viewdidload() {         super.viewdidload()          mapview.delegate = self         mapview.settings.scrollgestures = false         mapview.frame = cgrectmake(0, 65, 375, 555)         view.addsubview(mapview)           var tap = uitapgesturerecognizer(target: self, action: "tap:")         mapview.addgesturerecognizer(tap) }  func tap(recogniser:uitapgesturerecognizer)->void{         println("it works")     }  }

i have tried override touchesbegan, didnt work. have tried insert mapview.userinteractionenabled = true, didnt work...

any idea?

i managed 

func mapview(mapview: gmsmapview!, didtapatcoordinate coordinate: cllocationcoordinate2d) {         println("it works")     }

but if explain me why other solution didn't work, great!


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