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LayoutAnchor 4.2.0

LayoutAnchor 4.2.0

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Maintained by yume190.

LayoutAnchor 4.2.0

LayoutAnchor

An autolayout anchor wrapper.

Add some extenstion to UIView and UILayoutGuide

Extensions

// UIView and UILayoutGuide
var leading : LayoutAnchor<NSLayoutXAxisAnchor> 
var trailing : LayoutAnchor<NSLayoutXAxisAnchor>  
var left : LayoutAnchor<NSLayoutXAxisAnchor>  
var right : LayoutAnchor<NSLayoutXAxisAnchor>  
var centerX : LayoutAnchor<NSLayoutXAxisAnchor>  

var top : LayoutAnchor<NSLayoutYAxisAnchor> 
var bottom : LayoutAnchor<NSLayoutYAxisAnchor>
var centerY : LayoutAnchor<NSLayoutYAxisAnchor> 

var width : LayoutAnchor<NSLayoutDimension> 
var height : LayoutAnchor<NSLayoutDimension> 

// UIView
var firstBaseline : LayoutAnchor<NSLayoutYAxisAnchor> 
var lastBaseline : LayoutAnchor<NSLayoutYAxisAnchor>

Usage

let v1 = UIView();v1.translatesAutoresizingMaskIntoConstraints = false
let v2 = UIView();v2.translatesAutoresizingMaskIntoConstraints = false

let constraints:[NSLayoutConstraint] = [
    v1.leading == v2.leading + 10,
    v1.trailing == v2.trailing + 10,
    v1.safeAreaLayoutGuide.top == v2.top - 10,
    v1.safeAreaLayoutGuide.bottom == v2.bottom - 10,
]
constraints.activate()

(v1.bottom == v2.bottom - 10).activate()

Requirements

  • iOS 9.0+
  • Xcode 9.0+
  • Swift 4.0+

Installation

CocoaPods

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

$ gem install cocoapods

CocoaPods 1.1+ is required to build Alamofire 4.0+.

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

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '9.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'LayoutAnchor', '~> 4.0'
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 LayoutAnchor into your Xcode project using Carthage, specify it in your Cartfile:

github "yume190/LayoutAnchor" ~> 4.0

Run carthage update --platform ios to build the framework and drag the built LayoutAnchor.framework into your Xcode project.