如何制作具有步进值的UISlider

Question

希望有人可以帮助我。我试图在Swift中制作一个步长值为1到5的UISlider

我的代码是：

@IBAction func yearChange(sender: UISlider) {

    let step: Float = 1
    let currentValue = round(sender.value / step) * step
    print("\(currentValue) year")

}

Answer 1

我找到了解决方案

let step: Float = 1
    let roundedValue = round(sender.value / step) * step
    sender.value = roundedValue
    print("\(Int(roundedValue))")

Answer 2

希望这个帮助

  let slider = UISlider()
    let total: Float = 5
    slider.maximumValue = total
    slider.minimumValue = 1

    @IBAction func yearChange(sender: UISlider) {

        let step: Float = 1
        let currentValue = round((sender.value - sender.minimumValue) / step)
        print("\(currentValue) year")

    }

Answer 3

我用这段代码解决了这个问题：

let step: Float = 1
    let roundedValue = round(sender.value / step) * step
    sender.value = roundedValue