项目介绍：

2个球的slider， 方便选定范围

AORangeSlider

AORangeSlider is a custom UISlider with two handler to pick a minimum and maximum range.
Inspired by https://github.com/muZZkat/NMRangeSlider

Adding AORangeSlider to your project

CocoaPods
CocoaPods is the recommended way to add AORangeSlider to your project.
Add the following line to your Podfile:

pod 'AORangeSlider', '~> 1.0'

Usage

let rangeSlider = AORangeSlider(frame: frame)
view.addSubView(rangeSlider)

<!– To observe value changes when using gesture
rangeSlider.addTarget(self, action: #selector(sliderValueChanged(sender:)), for: .valueChanged)
is enough, but it cannot observe changes when value being changed programmatically. Thus, valuesChangedHandler is a better way. –>
If you want to call a method only when touch ends

rangeSlider.changeValueContinuously = false;
rangeSlider.addTarget(self, action: #selector(sliderValueChanged(sender:)), for: .valueChanged)

else if you want to call a method whenever the value changes, no matter by code or by touch,

rangeSlider.valuesChangedHandler = {
    //write your code here, and pay attention to Circular Reference.
}

Configuration

• minimumValue : The minimum possible value of the range

• maximumValue : The maximum possible value of the range

• lowHandleImageNormal: The image of low thumb

• highHandleImageNormal: The image of high thumb

• lowValue: set low value programmatically

• highValue: set high value programmatically

• func setValue(low: Double, high: Double, animated: Bool) set values animated

• stepValue: move animatedly to a stepValue when touch ends

• stepValueContinuously: If true, the thumb will not move until it hit a new step