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EasyAnchor

EasyAnchor is a small extension that save time when anchoring view using AutoLayout.

Usage

It's a small and one line of code, but it's annoy that we need to specify translatesAutoresizingMaskIntoConstraints = false every time to use AutoLayout. With EasyAnchor, we resolve that annoying issue by using:

button.layout { 
  view.addSubview($0)
  $0.setWidth(100)
  $0.setHeight(50)
  $0.left()
  $0.bottom(constraint: redView.bottomAnchor, 0)
}

or with chaining:

button.layout { 
  view.addSubview($0)
  $0.top().left().right().bottom()
}

or fill superview:

button.layout { 
  view.addSubview($0)
  $0.fill()
}

or fill superview with insets:

button.layout { 
  view.addSubview($0)
  $0.fill(insets: UIEdgeInsets(top: 0, left: 16, bottom: 0, right: 16))
}

or center superview:

button.layout { 
  view.addSubview($0)
  $0.center()
}

or center vertically:

button.layout { 
  view.addSubview($0)
  $0.centerY()
}

// With some padding
button.layout { 
  view.addSubview($0)
  $0.centerY(50)
}

// With some padding from specific constraint
button.layout { 
  view.addSubview($0)
  $0.centerY(constraint: redView.centerYAnchor, 10)
}

or center horizontally:

button.layout { 
  view.addSubview($0)
  $0.centerX()
}

// With some padding
button.layout { 
  view.addSubview($0)
  $0.centerX(50)
}

// With some padding from specific constraint
button.layout { 
  view.addSubview($0)
  $0.centerX(constraint: redView.centerXAnchor, 10)
}

Closure based building block

A class based building block, enable the shorthand syntax just after the object is initialized. It's common that we create some view and configure it with default closure like this:

let okButton: UIButton = {
  let button = UIButton()
  button.backgroundColor = UIColor.blue
  button.setTitleColor(UIColor.white, for: .normal)
  button.setTitle("OK", for: .normal)
  button.layer.cornerRadius = 8
  return button
}()

Here is shorthand syntax for above code.

let okButton = UIButton().decorate { 
  $0.backgroundColor = .blue
  $0.setTitleColor(.white, for: .normal) 
  $0.setTitle("OK", for: .normal)
  $0.layer.cornerRadius = 8
}

AutoLayout

To enable or disable AutoLayout for specific view:

button.useAutoLayout = true // enable
button.useAutoLayout = false // disable

Installation

Copy EasyAnchor.swift and Config.swift to your project, or

Cocoapods

pod 'EasyAnchor', :git => 'https://github.com/PhanithNY/EasyAnchor.git'

Swift Package Manager

From Xcode menu bar:

  1. File
  2. Swift Packages
  3. Add Package Dependency...
  4. Paste the repo url https://github.com/PhanithNY/EasyAnchor.git

Author

PhanithNY, [email protected]

License

EasyAnchor is available under the MIT license. See the LICENSE file for more info.