在viewDidLoad中带有参数的SWIFT函数

Question

I have an array of buttons and at the beginning of the program I want the user to pick one button and then it'll change its background. I've written a switch-statement but I don't know how can I implement it into override func viewDidLoad() , namely, I have no idea what should I write as a parameter instead of UIButton

class ViewController: UIViewController {

@IBOutlet var cardsArray: Array<UIButton> = []


override func viewDidLoad() {
    super.viewDidLoad()
    self.playerMove(sender: UIButton)       
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


@IBAction func playerMove(sender: UIButton) {

    switch (sender) {
    case self.cardsArray[0]:
        self.cardPressedAll(0)

    case self.cardsArray[1]:
        self.cardPressedAll(1)

    case self.cardsArray[2]:
        self.cardPressedAll(2)

    default: break
    }

}



func cardPressedAll (cardNumber: Int) {

    self.cardsArray[cardNumber].enabled = false

    self.cardsArray[cardNumber].setBackgroundImage(UIImage(named: "cross"), forState: UIControlState.Normal)
}
}

Answer 1

无需加载视图中的“ self.playerMove（sender：UIButton）”，而是需要使用情节提要将按钮连接到IBAction。