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https://github.com/SnapKit/SnapKit

A Swift Autolayout DSL for iOS & OS X
https://github.com/SnapKit/SnapKit

auto autolayout cocoapods constraints dsl layout snapkit swift ui xcode

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A Swift Autolayout DSL for iOS & OS X

Lists

README 

        



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



[![Build Status](https://travis-ci.org/SnapKit/SnapKit.svg)](https://travis-ci.org/SnapKit/SnapKit)

[![Platform](https://img.shields.io/cocoapods/p/SnapKit.svg?style=flat)](https://github.com/SnapKit/SnapKit)

[![Cocoapods Compatible](https://img.shields.io/cocoapods/v/SnapKit.svg)](https://cocoapods.org/pods/SnapKit)

[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)



#### ⚠️ **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](#requirements)

- [Migration Guides](#migration-guides)

- [Communication](#communication)

- [Installation](#installation)

- [Usage](#usage)

- [Credits](#credits)

- [License](#license)



## Requirements



- iOS 12.0+ / Mac OS X 10.13+ / tvOS 10.0+

- Xcode 10.0+

- Swift 4.0+



## Migration Guides



- [SnapKit 3.0 Migration Guide](Documentation/SnapKit%203.0%20Migration%20Guide.md)



## Communication



- If you **need help**, use [Stack Overflow](http://stackoverflow.com/questions/tagged/snapkit). (Tag 'snapkit')

- If you'd like to **ask a general question**, use [Stack Overflow](http://stackoverflow.com/questions/tagged/snapkit).

- 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](http://cocoapods.org) is a dependency manager for Cocoa projects. You can install it with the following command:



```bash

$ 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`:



```ruby

source 'https://github.com/CocoaPods/Specs.git'

platform :ios, '10.0'

use_frameworks!



target '' do

    pod 'SnapKit', '~> 5.7.0'

end

```



Then, run the following command:



```bash

$ pod install

```



### Carthage



[Carthage](https://github.com/Carthage/Carthage) is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.



You can install Carthage with [Homebrew](http://brew.sh/) using the following command:



```bash

$ brew update

$ brew install carthage

```



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



```ogdl

github "SnapKit/SnapKit" ~> 5.0.0

```



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



### Swift Package Manager



[Swift Package Manager](https://swift.org/package-manager/) is a tool for managing the distribution of Swift code. It’s integrated with the Swift build system to automate the process of downloading, compiling, and linking dependencies.



> Xcode 11+ is required to build SnapKit using Swift Package Manager.



To integrate SnapKit into your Xcode project using Swift Package Manager, add it to the dependencies value of your `Package.swift`:



```swift

dependencies: [

    .package(url: "https://github.com/SnapKit/SnapKit.git", .upToNextMajor(from: "5.0.1"))

]

```



### Manually



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



---



## Usage



### Quick Start



```swift

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](https://snapkit.github.io/SnapKit/docs/)

- [F.A.Q.](https://snapkit.github.io/SnapKit/faq/)



## Credits



- Robert Payne ([@robertjpayne](https://twitter.com/robertjpayne))

- Many other contributors



## License



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