Question

在我的应用程序的最后一个视图控制器中，我编写了一个代码，该代码创建了许多标签，这些标签中填充了一组随机字符

在标签文本字段下方显示用户应与标签字符匹配的位置。当他按下按钮时，将检查他的答案。如果答案正确，则分数会更新。

此后，乐谱标签应更新，应生成并显示带有字符的标签的新文本，但这就是我遇到的问题……我的本能是在viewDidLoad中的代码中添加一个循环，但是因为检查答案的代码在viewDidLoad外部的buttonAction函数中，所以我不知道该怎么做...

以下是我的应用中的一些代码，可能会澄清一些问题。我删除了很多简单的代码，并为此示例添加了注释行。

override func viewDidLoad()
{
    super.viewDidLoad()

    // variables are declared, the number of labels is calculated based on the frame size
    // the text for the labels is calculated based on a function in a separate class I wrote

            var a = 0
            while a < numberOfLabels {
                // the UILabels are made and filled
                // the corresponding UITextFields are made
                a += 1
                labelX += labelWidth
            }
            // then here the button is coded, the last lines are:
            myButton.addTarget(self, action: #selector(buttonAction), for: .touchUpInside)
            view.addSubview(myButton)
}

@objc func buttonAction(sender: UIButton!) {
    var a = 0
    var rightAnswer = false
    var userInput: [String] = Array()
    while a < numberOfLabels.shared.category! {
        if let theLabel = self.view.viewWithTag(a) as? UITextField {
            let tekstInput = theLabel.text
            userInput.insert(tekstInput!, at:a-1)
        }
        a = a + 1
    }
    let controle = Controle()
    rightAnswer = controle.checkAnswer(userAnswer: userInput)
    if rightAnswer {
        if var score = PassScore.shared.category {
        score += 1
        PassScore.shared.category = score
        }
        else {
            var score = 1
            PassScore.shared.category = score
        }
    }
    return
}

Answer 1

将初始化代码包含在函数中

func setupLabels() {
    var a = 0
        while a < numberOfLabels {
            // the UILabels are made and filled
            // the corresponding UITextFields are made
            a += 1
            labelX += labelWidth
        }
}

并在需要时调用它：

override func viewDidLoad()
{
    super.viewDidLoad()
    setupLabels()
}

@objc func buttonAction(sender: UIButton!) {
    //...
    setupLabels()
}

循环编程的标签和按钮

1 个答案: