swift - Why is the message not showing up? -


i created pop up, nothing showing up, added uiviewcontrollers pop ups. why not working? http://puu.sh/hrel9/75081b2a90.png 

class interestviewcontroller: uiviewcontroller, uipopoverpresentationcontrollerdelegate { override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) {     if segue.identifier == "popoversegue" {         let interestviewcontroller = segue.destinationviewcontroller as! uiviewcontroller         interestviewcontroller.modalpresentationstyle = uimodalpresentationstyle.popover         interestviewcontroller.popoverpresentationcontroller!.delegate = self     } } func adaptivepresentationstyleforpresentationcontroller(controller: uipresentationcontroller) -> uimodalpresentationstyle {     return uimodalpresentationstyle.none }

i believe don't need segue in case. can use example listed below. shows popover button when press it.

import uikit  class viewcontroller: uiviewcontroller, uipopoverpresentationcontrollerdelegate {    var mypopover : uipopoverpresentationcontroller?    @ibaction func buttonpressed(sender: uibutton) {     // can init own view controller here     var popoverview = self.storyboard?.instantiateviewcontrollerwithidentifier("interestviewcontroller‌​") as! interestviewcontroller     popoverview.preferredcontentsize = cgsize(width: 250, height: 200);     var destnav = uinavigationcontroller(rootviewcontroller: popoverview)     destnav.modalpresentationstyle = uimodalpresentationstyle.popover     self.mypopover = destnav.popoverpresentationcontroller     self.mypopover?.delegate = self     self.mypopover?.sourceview = self.view     var theframe = sender.frame     self.mypopover?.sourcerect = theframe     destnav.modalpresentationstyle = uimodalpresentationstyle.popover     destnav.navigationbarhidden = true     self.presentviewcontroller(destnav, animated: true, completion: nil)    }    func adaptivepresentationstyleforpresentationcontroller(controller: uipresentationcontroller) -> uimodalpresentationstyle {     return uimodalpresentationstyle.none   }  }

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