//创建
let slider = UISlider()
slider.frame = CGRect(x: 50, y: 100, width: 200, height: 50)
//最小/大值
slider.minimumValue = 0
slider.maximumValue = 1
//当前值（在取值范围之内的位置）
slider.value = 0.5
//按钮最小/大端图片
slider.minimumValueImage = UIImage(named:"SSS")
slider.maximumValueImage = UIImage(named:"DDD")
//不同状态之下，圆点显示图片
slider.setThumbImage(UIImage(named:""), for: .normal)
slider.setThumbImage(UIImage(named:""), for: .highlighted)
slider.setThumbImage(UIImage(named:""), for: .disabled)
slider.setThumbImage(UIImage(named:""), for: .selected)
//设置圆点的颜色
slider.thumbTintColor = UIColor.red
//设置划过和没有划过颜色（圆点左/右）
slider.minimumTrackTintColor = UIColor.yellow
slider.maximumTrackTintColor = UIColor.brown
//改变事件
// 滑块滑动停止后才触发ValueChanged事件
slider.isContinuous = false
slider.addTarget(self, action: #selector(ViewController.change(slider:)), for: UIControlEvents.valueChanged)
slider.addTarget(self, action: #selector(ViewController.sliderDragUp(sender:)), for: UIControlEvents.touchUpInside)
func change(slider:UISlider) {
print("slider.value = %d",slider.value)
}
func sliderDragUp(sender: UISlider) {
print("value:(sender.value)")
}
