Swift Objective-C Other
Clone or download
Failed to load latest commit information.
ExampleLayouts Swift 4 Migration (#154) Oct 5, 2017
LayoutKit.playground Add OverlayLayout (#127) Apr 18, 2017
LayoutKit.xcodeproj Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
LayoutKitObjCSampleApp Making LOKLayout configureView method non-optional (#225) Aug 2, 2018
LayoutKitSampleApp Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
LayoutKitTests Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
Sources Bumping version to 9.0.0 (#227) Aug 3, 2018
Tests Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
docs Fix doc link for ButtonLayout (#199) May 2, 2018
.gitignore Update .gitignore Add .DS_Store for macOS Dec 2, 2016
.swift-version Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
.travis.yml Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
LICENSE Open source LayoutKit Jun 22, 2016
LayoutKit-iOS copy-Info.plist Adding builders to the pod. Creating target for objc code. (#194) Mar 13, 2018
LayoutKit.podspec Bumping version to 9.0.0 (#227) Aug 3, 2018
LayoutKitObjC.podspec Bumping version to 9.0.0 (#227) Aug 3, 2018
NOTICE Open source LayoutKit Jun 22, 2016
Package.swift create sample app to test cocoapods integration (#125) Apr 17, 2017
README.md remove "docs: null%" (#174) Dec 8, 2017
RELEASE-CHECKLIST.md Version number bump 7.0.0 to 7.0.1 and update RELEASE.md (#188) Feb 27, 2018
build.sh Migrate swift version 4.0 to 4.1 (#223) Aug 2, 2018
debug-time-function-bodies.sh Support macOS (#11) Jul 13, 2016
mkdocs.yml 2.0.0 pod spec and documentation updates Aug 22, 2016



CocoaPods GitHub release Build Status codecov

LayoutKit is a fast view layout library for iOS, macOS, and tvOS.


LinkedIn created LayoutKit because we have found that Auto Layout is not performant enough for complicated view hierarchies in scrollable views. For more background, read the blog post.


LayoutKit has many benefits over using Auto Layout:

  • Fast: LayoutKit is as fast as manual layout code and is significantly faster than Auto Layout.
  • Asynchronous: Layouts can be computed in a background thread so user interactions are not interrupted.
  • Declarative: Layouts are declared with immutable data structures. This makes layout code easier to develop, document, code review, test, debug, profile, and maintain.
  • Cacheable: Layout results are immutable data structures so they can be precomputed in the background and cached to increase user perceived performance.

LayoutKit also provides benefits that make it as easy to use as Auto Layout:

  • UIKit friendly: LayoutKit produces UIViews and also provides an adapter that makes it easy to use with UITableView and UICollectionView.
  • Internationalization: LayoutKit automatically adjusts view frames for right-to-left languages.
  • Swift: LayoutKit can be used in Swift applications and playgrounds.
  • Tested and production ready: LayoutKit is covered by unit tests and is being used inside of recent versions of the LinkedIn and LinkedIn Job Search iOS apps.
  • Open-source: Not a black box like Auto Layout.
  • Apache License (v2): Your lawyers will be happy that there are no patent shenanigans.

Hello world

let image = SizeLayout<UIImageView>(width: 50, height: 50, config: { imageView in
    imageView.image = UIImage(named: "earth.jpg")

let label = LabelLayout(text: "Hello World!", alignment: .center)

let stack = StackLayout(
    axis: .horizontal,
    spacing: 4,
    sublayouts: [image, label])

let insets = UIEdgeInsets(top: 4, left: 4, bottom: 4, right: 8)
let helloWorld = InsetLayout(insets: insets, sublayout: stack)
helloWorld.arrangement().makeViews(in: rootView)

Hello world example layout


We have found LayoutKit to be a useful tool, but you should be aware of what it is not.

  • LayoutKit is not a constraint based layout system. If you wish to express a constraint between views, then those views need to be children of a single layout that implements code to enforce that constraint.
  • LayoutKit is not flexbox, but you may find similarities.


LayoutKit can be installed with CocoaPods or Carthage.


Add this to your Podspec:

pod 'LayoutKit'

Then run pod install.


Add this to your Cartfile:

github "linkedin/LayoutKit"

Then run carthage update.


Now you are ready to start building UI.