我有3个滑块作为显示上述:编程变化滑块值和更新标签
而当“最小尖端”,它比“默认尖端”等于或大于,我加1“默认提示“。而且它也是默认到最大提示的逻辑。
所以,直到现在我有这个代码,部分工作,因为默认提示的滑块增长在用户界面中,但标签不更新,因为代理不被调用。
@IBOutlet weak var minLabel: UILabel!
@IBOutlet weak var defaultLabel: UILabel!
@IBOutlet weak var maxLabel: UILabel!
@IBOutlet weak var minSlider: UISlider!
@IBOutlet weak var defaultSlider: UISlider!
@IBOutlet weak var maxSlider: UISlider!
override func viewDidLoad() {
super.viewDidLoad()
minSlider.addTarget(self, action: #selector(SettingsViewController.minSliderValueChanged(_:)), forControlEvents: UIControlEvents.AllEvents)
defaultSlider.addTarget(self, action: #selector(SettingsViewController.defaultSliderValueChanged(_:)), forControlEvents: UIControlEvents.AllEvents)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func minSliderValueChanged(sender: UISlider) {
let valueMin = Int(minSlider.value)
let valueDefault = Int(defaultSlider.value)
_ = Int(maxSlider.value)
minLabel.text = "Min tip: \(valueMin)%"
if(valueMin >= valueDefault){
defaultSlider.value = Float(valueMin+1)
}
}
@IBAction func defaultSliderValueChanged(sender: UISlider) {
let value = Int(defaultSlider.value)
defaultLabel.text = "Default tip: \(value)%"
}
@IBAction func maxSliderValueChanged(sender: UISlider) {
let value = Int(maxSlider.value)
maxLabel.text = "Max tip: \(value)%"
}
我失踪了什么?
谢谢!这解决了问题的一部分 –