swift中UISlider的使用

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let slider = UiSlider(frame: CGRectMake(10.0,10.0,(CGRectGetWidth(self.view.bounds) - 10.0 * 2),20.0))
self.view.addSubview(slider)
slider.backgroundColor = UIColor.lightGrayColor()
// 设置值(默认值为0.0,且值区间为0.0~1.0)
slider.minimumValue = 1.0
slider.maximumValue = 100.0
slider.setValue(20.0,animated: true)
// 注意:滑动条大小值(minimumTrackTintColor、maximumTrackTintColor)颜色与大小值左右两端图标(minimumValueImage、maximumValueImage)不能同时设置,否则图标设置无效
slider.minimumValueImage = UIImage(named: "normalImage")
slider.maximumValueImage = UIImage(named: "hightImage")
// 注意:滑动条大小值颜色(minimumTrackTintColor、maximumTrackTintColor)与滑动条大小值图标(setMinimumTrackImage、setMaximumTrackImage)不能同时设置,否则先设置的无效
// slider.setMinimumTrackImage(UIImage(named: "normalImage"),forState: UIControlState.Normal)
// slider.setMaximumTrackImage(UIImage(named: "hightImage"),forState: UIControlState.Normal)
        
slider.minimumTrackTintColor = UIColor.yellowColor()
slider.maximumTrackTintColor = UIColor.redColor()
// 滑动块颜色、或图标设置(注意:两者不能同时设置,否则先设置的无效。另外,默认thumb块比较大,可通过设置thumbImage的方法改变thumb大小)
slider.thumbTintColor = UIColor.greenColor()
slider.setThumbImage(UIImage(named: "hightImage"),forState: UIControlState.Normal)
slider.setThumbImage(UIImage(named: "hightImage"),forState: UIControlState.Highlighted)
// 滑块滑动停止后才触发ValueChanged事件
slider.continuous = false
// 响应事件
slider.addTarget(self,action: Selector("sliderValueChange:"),forControlEvents: UIControlEvents.ValueChanged)
let label = UILabel(frame: CGRectMake(10.0,(CGRectGetMinY(slider.frame) + CGRectGetHeight(slider.bounds) + 10.0),(CGRectGetWidth(self.view.frame) - 10.0 * 2),30.0))
self.view.addSubview(label)
label.backgroundColor = UIColor.yellowColor()
label.textColor = UIColor.redColor()
label.tag = 1000
let value = slider.value
label.text = String(format: "slider当前值是:%.2f",arguments: [value])
// MARK: - sliderValueChange
func sliderValueChange(slider:UiSlider)
{
        let value = slider.value
        let label:UILabel = self.view.viewWithTag(1000) as! UILabel
        label.text = String(format: "slider当前值是:%.2f",arguments: [value])
        print("slider当前值是:\(value)")
}


原文链接:https://www.f2er.com/swift/322911.html

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