PrettyConstraints

PrettyConstraints helps you create your views faster programmatically using AutoLayout constraints.

Installation

CocoaPods

Using CocoaPods, install it by adding the following line to your Podfile:

pod 'PrettyConstraints'

Swift Package Manager

Using Swift Package Manager, add it as a Swift Package in Xcode 11.0 or later, select File > Swift Packages > Add Package Dependency... and add the repository URL:

https://github.com/mobiraft/PrettyConstraints

Manual Installation

Download and include the PrettyConstraints folder and files in your codebase.

Requirements

iOS 11
Swift 5

How To Use

Embedding View in another View:

let view = UIView(frame: CGRect(origin: .zero, size: CGSize(width: 100, height: 100)))
view.backgroundColor = .black
let subView = UIView()
subView.backgroundColor = .gray
view.addSubview(subView)
subView.applyConstraints(.fitInView(view, inset: 10))

Centering View inside another View:

subView.applyConstraints(.center(in: view),
                         .width(constant: 50),
                         .height(constant: 50))

Other Constraints examples:

subView.applyConstraints(.top(to: view.topAnchor),
                         .bottom(to: view.bottomAnchor),
                         .leading(to: view.leadingAnchor, equality: .greaterThanOrEqual),
                         .trailing(to: view.trailingAnchor, equality: .lessThanOrEqual),
                         .centerX(to: view.centerXAnchor),
                         .width(constant: 50),
                         .height(constant: 50))

Store constraints and modify when needed:

let constraints:[NSLayoutConstraint] = subView.applyConstraints(.center(in: view),
                                                                .width(constant: 50),
                                                                .height(constant: 50))
constraints[1].constant = 20 // Modifies the width as 20.0

mobiraft/PrettyConstraints