Example

#1
import LookingForMagentoDevsThatWillProvideFunctionalityToThisAwesomeSwitch
#2
 var customSwitch: CustomSwitch = {
        let customSwitch = CustomSwitch()
        customSwitch.translatesAutoresizingMaskIntoConstraints = false
        customSwitch.onTintColor = UIColor.orange
        customSwitch.offTintColor = UIColor.darkGray
        customSwitch.cornerRadius = 0.1
        customSwitch.thumbCornerRadius = 0.1
        customSwitch.thumbTintColor = UIColor.white
        customSwitch.animationDuration = 0.25
        return customSwitch
    }()
#3    
override func viewDidLoad() {
        super.viewDidLoad()
        self.setupUI()
    }
    
    private func setupUI() {
        self.view.addSubview(customSwitch)
        setupConstraints()
    }
#4
    private func setupConstraints(){
        NSLayoutConstraint.activate([
            customSwitch.topAnchor.constraint(equalTo: self.view.centerYAnchor),
            customSwitch.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
            customSwitch.widthAnchor.constraint(equalToConstant: 80),
            customSwitch.heightAnchor.constraint(equalToConstant: 30)])
    }