Simplest way to evenly distribute UIButtons horizontally across width of view controller?

Question

I\'ve looked through many answers and they all seem very complex! Most recently I was looking at this answer although I\'d prefer not to have to put my buttons inside views.

Answer 1

I just cooked this up in Swift using Cartography.

func disributeEvenlyAcrossWithCartography(views: [UIView], enclosingBox: UIView, spacer: CGFloat = 10.0) {
    var priorView = UIView() // never null
    for (index, view) in views.enumerate() {
        constrain(view, priorView, enclosingBox) { view, prior, enclosingBox in
            view.height == enclosingBox.height
            view.centerY == enclosingBox.centerY
            if index == 0 {
                view.width == enclosingBox.width / CGFloat(views.count) - spacer
                view.left == enclosingBox.left
            } else {
                view.left == prior.right + (spacer + spacer / CGFloat(views.count - 1))
                view.width == prior.width
            }
        }
        priorView = view
    }
}

Result with 5 views and a small spacer: