swift - Parse.com for Xcode to make simple app like trivia crack type -

// //  viewcontroller.swift //  ap attack // //  created ddfulton on 5/8/15. //  copyright (c) 2015 ddfulton. rights reserved. //  import uikit import parse  class viewcontroller: uiviewcontroller {      var question: string!     var answers: [string]!     var answer: string!      @iboutlet weak var questionlabel: uilabel!      @iboutlet weak var button1: uibutton!      @iboutlet weak var button2: uibutton!      @iboutlet weak var button3: uibutton!      @iboutlet weak var button4: uibutton!      override func viewdidload() {         super.viewdidload()         // additional setup after loading view, typically nib.         calldata()      }        func calldata(){          var query : pfquery = pfquery(classname: "questionsandanswers")         query.getobjectinbackgroundwithid("mo4hyeb8ec"){             (objectholder : pfobject!, error : nserror!) -> void in              if (error == nil){                  self.question = objectholder["question"] string!                 self.answers = objectholder["answers"] array!                 self.answer = objectholder["answer"] string!                  if (self.answers.count > 0){                     self.questionlabel.text = self.question                      self.button1.settitle(self.answers[0], forstate : uicontrolstate.normal)                     self.button2.settitle(self.answers[1], forstate : uicontrolstate.normal)                     self.button3.settitle(self.answers[2], forstate : uicontrolstate.normal)                     self.button4.settitle(self.answers[3], forstate : uicontrolstate.normal)                   }               }             else{                  nslog("error. wrong!")              }          }     }       override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      @ibaction func button1action(sender: anyobject) {     }     @ibaction func button2action(sender: anyobject) {     }     @ibaction func button3action(sender: anyobject) {     }     @ibaction func button4action(sender: anyobject) {     } } 

that's entire code. parse.com organized objectid, createdat, updatedat, acl, questions (string), answers (array of strings), answer (string value number.)

https://www.youtube.com/watch?v=3yeicy7wcba youtube video i'm following directly.

i know i'm missing something, otherwise work, i'm having shitty time debugging it.

i had same problem. spent half day on one. made 2 changes.

1. check on parse , make sure answer column named "answer". mine named "array", , screwing me up.

2. i tinkered optionals , exclamation points , question marks. see code below.

       (objectholder : pfobject?, error : nserror?) -> void in 

   if (error == nil){ self.question = objectholder?["question"] as! string self.answers = objectholder?["answers"] as! array self.answer = objectholder?["answer"] as! string