ios - xcode9: class AppDelegate: UIResponder, UIApplicationDelegate... Thread 1: signal SIGABRT -


apologies if obvious mistake (new coding!) i'm having couple issues.

1: following error appears when want load simulator in xcode 9:

class appdelegate: uiresponder, uiapplicationdelegate... thread 1: signal sigabrt

this issue appeared after added label "cat years" title , changed background colour in main storyboard.

2: when simulator did work before above changes, cat (imageview) not appear in simulator?

thank suggestions in advance.

import uikit  class viewcontroller: uiviewcontroller {      @iboutlet weak var agetextfield: uitextfield!      @iboutlet weak var resultlabel: uilabel!      @ibaction func getage(_ sender: any) {          if let age = agetextfield.text {              if let ageasnumber = int(age) {                  let ageincatyears = ageasnumber * 7                  resultlabel.text = "your cat " + string(ageincatyears) + " in cat years!"                }         }      }       override func viewdidload() {         super.viewdidload()         // additional setup after loading view, typically nib.     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }   }

enter image description here

you "sigabrt" errors when have outlet disconnected view. can check clicking view controller in storyboard , going connections on side panel. if see extra/duplicate outlet there, causing problem.

in example, have either outlet on text field or outlet in code referencing different text field , field no longer in storyboard.


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