如何将多个UIStepper值添加到一个标签？

Question

我现在正在做我的第一个Swift项目。我有两个stepper和一个标签--两个stepper都将它们的值发送给它。如何将第二个步进器的值添加到标签中，其中第一个步进器的值已经存在？下面是我的代码：

override func viewDidLoad() {
    super.viewDidLoad()


    stepper.wraps = true
    stepper.autorepeat = true
    stepper.maximumValue = 10000
    stepper2.wraps = true
    stepper2.autorepeat = true
    stepper2.maximumValue = 10000

}

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

@IBOutlet weak var valueLabel: UILabel!
@IBOutlet weak var stepper: UIStepper!
@IBAction func stepperValueChanged(sender: UIStepper) {
    valueLabel.text = Int(sender.value).description
}



@IBOutlet weak var stepper2: UIStepper!
@IBAction func stepper2ValueChanged(sender: UIStepper) {
    valueLabel.text = Int(sender.value).description
}

}

谢谢!

Answer 1

如果您希望将这两个值组合为一个字符串并在标签上显示此字符串，则必须创建一个新函数来执行此操作。我在代码中添加了这样一个函数：`

类ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()

    stepper.wraps = true
    stepper.autorepeat = true
    stepper.maximumValue = 10000
    stepper2.wraps = true
    stepper2.autorepeat = true
    stepper2.maximumValue = 10000

}

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

@IBOutlet weak var valueLabel: UILabel!
@IBOutlet weak var stepper: UIStepper!

@IBAction func stepperValueChanged(sender: UIStepper) {

    // valueLabel.text = Int(sender.value).description
    addValuesToASumAndPutItIntoTheLabel()
}

@IBOutlet weak var stepper2: UIStepper!
@IBAction func stepper2ValueChanged(sender: UIStepper) {

    // valueLabel.text = String(sender.value)
    addValuesToASumAndPutItIntoTheLabel()

}

func addValuesToASumAndPutItIntoTheLabel() {
    let summe : Int = Int(stepper.value + stepper2.value)
    valueLabel.text = summe.description
}

}`