搭配不同 space (間距)的 stack view

透過 stack view 的 function setCustomSpacing(_:after:)

class ViewController: UIViewController {
    @IBOutlet weak var stackView: UIStackView!
    @IBOutlet weak var iosLabel: UILabel!
    @IBOutlet weak var androidLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        stackView.setCustomSpacing(30, after: iosLabel)
        stackView.setCustomSpacing(90, after: androidLabel)
    }
}

@available(iOS 11.0, *)
open func setCustomSpacing(_ spacing: CGFloat, after arrangedSubview: UIView)