SnapKit/Example-iOS/demos/SimpleLayoutViewController.swift at develop · dev4dev/SnapKit

97 lines (76 loc) · 2.59 KB

// SimpleLayoutViewController.swift

// SnapKit

// Created by Spiros Gerokostas on 01/03/16.

import UIKit

class SimpleLayoutViewController: UIViewController {

var didSetupConstraints = false

let blackView: UIView = {

let view = UIView()

view.backgroundColor = .black

return view

}()

let redView: UIView = {

let view = UIView()

view.backgroundColor = .red

return view

}()

let yellowView: UIView = {

let view = UIView()

view.backgroundColor = .yellow

return view

}()

let blueView: UIView = {

let view = UIView()

view.backgroundColor = .blue

return view

}()

let greenView: UIView = {

let view = UIView()

view.backgroundColor = .green

return view

}()

override func viewDidLoad() {

super.viewDidLoad()

view.backgroundColor = UIColor.white

view.addSubview(blackView)

view.addSubview(redView)

view.addSubview(yellowView)

view.addSubview(blueView)

view.addSubview(greenView)

view.setNeedsUpdateConstraints()

}

override func updateViewConstraints() {

if (!didSetupConstraints) {

blackView.snp.makeConstraints { make in

make.center.equalTo(view)