mirror of https://github.com/SnapKit/SnapKit
86 lines
2.3 KiB
Swift
86 lines
2.3 KiB
Swift
//
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// SimpleLayoutViewController.swift
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// SnapKit
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//
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// Created by Spiros Gerokostas on 01/03/16.
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// Copyright © 2016 SnapKit Team. All rights reserved.
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//
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import UIKit
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class SimpleLayoutViewController: UIViewController {
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var didSetupConstraints = false
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let blackView: UIView = {
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let view = UIView()
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view.backgroundColor = .blackColor()
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return view
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}()
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let redView: UIView = {
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let view = UIView()
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view.backgroundColor = .redColor()
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return view
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}()
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let yellowView: UIView = {
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let view = UIView()
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view.backgroundColor = .yellowColor()
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return view
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}()
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let blueView: UIView = {
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let view = UIView()
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view.backgroundColor = .blueColor()
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return view
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}()
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override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = UIColor.whiteColor()
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view.addSubview(blackView)
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view.addSubview(redView)
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view.addSubview(yellowView)
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view.addSubview(blueView)
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view.setNeedsUpdateConstraints()
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}
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override func updateViewConstraints() {
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if (!didSetupConstraints) {
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blackView.snp_makeConstraints(closure: { (make) -> Void in
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make.center.equalTo(view)
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make.size.equalTo(CGSizeMake(100.0, 100.0))
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})
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redView.snp_makeConstraints(closure: { (make) -> Void in
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make.top.equalTo(blackView.snp_bottom).offset(20.0)
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make.left.equalTo(20.0)
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make.size.equalTo(CGSizeMake(100.0, 100.0))
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})
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yellowView.snp_makeConstraints(closure: { (make) -> Void in
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make.top.equalTo(blackView.snp_bottom).offset(20.0)
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make.left.equalTo(blackView.snp_right).offset(20.0)
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make.size.equalTo(CGSizeMake(100.0, 100.0))
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})
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blueView.snp_makeConstraints(closure: { (make) -> Void in
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make.bottom.equalTo(blackView.snp_top).offset(0.0)
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make.left.equalTo(blackView.snp_right).offset(20.0)
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make.size.equalTo(CGSizeMake(100.0, 100.0))
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})
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didSetupConstraints = true
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}
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super.updateViewConstraints()
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}
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}
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