swift
1import UIKit 2 3struct Question { 4 var question: String! 5 var answers: [String]! 6 var answer: Int! 7} 8 9class ViewController: UIViewController{ 10 11 @IBOutlet weak var label: UILabel! 12 @IBOutlet var buttons: [UIButton]! 13 14 var questions = [Question]() 15 var qNumber = Int() 16 var aNumber = Int() 17 18override func viewDidLoad() { 19 super.viewDidLoad() 20 questions = [Question(question: "test",answers: ["a","b","c","d"],answer: 2)] 21 pickQuestions() 22 } 23 24 func pickQuestions(){ 25 if questions.count > 0{ 26 qNumber = 0 27 label?.text = questions[qNumber].question 28 aNumber = questions[qNumber].answer 29 30 for i in 0..<buttons.count{←ここでエラー 31 buttons[i].setTitle(questions[qNumber].answers[i], for: UIControlState.normal) 32 } 33 questions.remove(at: qNumber) 34 }else{ 35 NSLog("Done") 36 } 37 38 } 39 40}
エラーメッセージ
fatal error: unexpectedly found nil while unwrapping an Optional value
やってみたこと
storyboardの接続確認。
回答1件
あなたの回答
tips
プレビュー
バッドをするには、ログインかつ
こちらの条件を満たす必要があります。