Google maps Places Picker for iOS - GMSPlacePicker in Swift appearing but disappears when animation ends -

i'm trying convert simple gmsplacepicker example swift

but picker appears disappears transition right left completes.

    //  viewcontroller.swift import uikit import corelocation import googlemaps  class viewcontroller: uiviewcontroller {      @ibaction func buttonplacespicker_touchupinside(sender: anyobject) {          //-----------------------------------------------------------------------------------         var southwestsydney : cllocationcoordinate2d = cllocationcoordinate2dmake(-33.8659, 151.1953)         var northeastsydney : cllocationcoordinate2d = cllocationcoordinate2dmake(-33.8645, 151.1969)          var sydneybounds : gmscoordinatebounds = gmscoordinatebounds(coordinate: southwestsydney, coordinate:northeastsydney)          //var config : gmsplacepickerconfig = gmsplacepickerconfig(viewport:sydneybounds)         var config : gmsplacepickerconfig = gmsplacepickerconfig(viewport:nil)          //---------------------------------------------------------------------         var placepicker : gmsplacepicker = gmsplacepicker(config: config)          //typealias gmsplaceresultcallback = (gmsplace?, nserror?) -> void          var error: nserror? = nil         var gmsplace: gmsplace? = nil          placepicker.pickplacewithcallback(){             (gmsplace, error) -> void in             if let error = error{                 println("error:\(error)")             }else{                 if let gmsplace = gmsplace{                     if let formattedaddress = gmsplace.formattedaddress{                         println("formattedaddress:\r\(formattedaddress)")                     }else{                         println("gmsplace.formattedaddress nil")                     }                  }else{                     println("gmsplace nil")                 }                  println("info")             }         }     } } 

my app has asked location sucessfully

i have bridging header google maps.

i didnt use cocoa pods install framework

but i've used framework in obj-c before

so dragged googlemaps.framework project , internal resources bundle

i added following previous tutorials , linker errors:

when run can see sydney in pickers maps.

it transitions right side fo screen left.

when reaches left disappears

i added reveal app , cant see picker view offline.

my gms services api key correct 1 used in obj-c app show places picker.

bundle id correct.

my swift knowledge "i think know it. don't"

any ideas?

you should retain reference gmsplacepicker. make property instead of local variable.