関数の戻り値をラベル出力に設定しようとすると、このエラーが発生し続けます。
import UIKit
class finalData: UIViewController {
var userNum: Int!
var computerNum: Int!
@IBOutlet var output: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
self.output.text = chooseWinner(userNum: userNum, computerNum: computerNum)
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func chooseWinner(userNum : Int, computerNum : Int) -> String {
if userNum == computerNum {
return "There is a tie"
}else if userNum == 1 && computerNum == 2{
return "You lost!"
}else if userNum == 1 && computerNum == 3{
return "You won!"
}else if userNum == 2 && computerNum == 1{
return "You won!"
}
else if userNum == 2 && computerNum == 3{
return "You lost!"
}else if userNum == 3 && computerNum == 1{
return "You lost!"
}
else if userNum == 3 && computerNum == 2{
return "You won!"
}else{
return "value"
}
}
func findPlayerImage (firstImage: Int) -> UIImage{
if userNum == 1{
return #imageLiteral(resourceName: "black")
}else if userNum == 2{
return #imageLiteral(resourceName: "black")
}else{
return #imageLiteral(resourceName: "black")
}
}
func findCompImage (secondImage: Int) -> UIImage{
if computerNum == 1{
return #imageLiteral(resourceName: "black")
}else if computerNum == 2{
return #imageLiteral(resourceName: "black")
}else{
return #imageLiteral(resourceName: "black")
}
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
このView Controllerに数値を渡してから、関数を呼び出して文字列を返そうとしています(私はRock、Paper、Scissorsを作成しています)。しかし、出力=関数に設定すると、ラップ解除エラーが発生します。