SnapKit is a DSL to make Auto Layout easy on both iOS and OS X.

⚠️ To use with Swift 4.x please ensure you are using >= 4.0.0 ⚠️

⚠️ To use with Swift 5.x please ensure you are using >= 5.0.0 ⚠️

Contents

• Requirements
• Migration Guides
• Communication
• Installation
• Usage
• Credits
• License

Requirements

• iOS 10.0+ / Mac OS X 10.12+ / tvOS 10.0+
• Xcode 10.0+
• Swift 4.0+

Communication

• If you need help, use Stack Overflow. (Tag 'snapkit')
• If you'd like to ask a general question, use Stack Overflow.
• If you found a bug, open an issue.
• If you have a feature request, open an issue.
• If you want to contribute, submit a pull request.

Installation

CocoaPods

CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:

$ gem install cocoapods

CocoaPods 1.1.0+ is required to build SnapKit 4.0.0+.

To integrate SnapKit into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '10.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'SnapKit', '~> 5.0.0'
end

Then, run the following command:

$ pod install

Carthage

Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

You can install Carthage with Homebrew using the following command:

$ brew update
$ brew install carthage

To integrate SnapKit into your Xcode project using Carthage, specify it in your Cartfile:

github "SnapKit/SnapKit" ~> 5.0.0

Run carthage update to build the framework and drag the built SnapKit.framework into your Xcode project.

Manually

If you prefer not to use either of the aforementioned dependency managers, you can integrate SnapKit into your project manually.

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Usage

Quick Start

import SnapKit

class MyViewController: UIViewController {

    lazy var box = UIView()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.view.addSubview(box)
        box.backgroundColor = .green
        box.snp.makeConstraints { (make) -> Void in
           make.width.height.equalTo(50)
           make.center.equalTo(self.view)
        }
    }

}

Playground

You can try SnapKit in Playground.

Note:

To try SnapKit in playground, open SnapKit.xcworkspace and build SnapKit.framework for any simulator first.

Resources

• Documentation
• F.A.Q.

Credits

• Robert Payne (@robertjpayne)
• Many other contributors

License

SnapKit is released under the MIT license. See LICENSE for details.