Latest 2.0.0
License MIT
Platforms ios 8.0, requires ARC


Swiftly generate Auto Layout constraints.


To run the example project, simply run pod try swiftly. Alternatively, you can clone the repo and run the project in the example directory.

All UIViews and UILayoutGuides respond to the applyLayout method which takes a variadic list of Swiftly objects. Convenience initializers are available which pair with all of Apple’s NSLayoutAttribute types. Common combinatorial layout types flush, flushToMargins, vertical, horizontal, center, and size are also available.

view.applyLayout(.centerX, .vertical, .width * 0.5)



Swiftly is available through CocoaPods. To install
it, simply add the following line to your Podfile:

pod "Swiftly"


Swiftly is available through Carthage. To install
it, simply add the following line to your Cartfile:

github "Imperiopolis/Swiftly" ~> 2.0

Swift Version

Swiftly 2.0 and later require Swift 4.2. For older versions of Swift, please use the Swiftly 1.0 build.

Custom Operators

Operators can be used on Swiftly objects to produce modified layouts. The ==, <=, >=, +, -, *, ~=, and / operators are available.

view.applyLayout(.centerX, .top + 20, .width * 0.5, .height == 200)

Setting Priority

The priority of Swiftly objects may be configured.

view.applyLayout(.centerY ~= UILayoutPriorityRequired)

View Relationships

By default, layout types reference the views superview. To create a constraint relative to a sibling view pass that view as a paramter.

view1.applyLayout(.left == .right(view2) + 5, .size(view2))

Constraint Manipulation

The applyLayout method returns an array of the generated LayoutConstraint objects, which can be used to later to easily disable or modify the generated constraints.

let constraints = view.applyLayout(.size == 5, .center)



Note: Any view which has applyLayout called on it will automatically set translatesAutoresizingMaskIntoConstraints to false and have the generated constraints added to its superview.


Read the documentation here.

About Swiftly

Swiftly was created by @Imperiopolis and was intended as a lightweight version of Cartography by Robb Böhnke.

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

Latest podspec

    "name": "Swiftly",
    "version": "2.0.0",
    "summary": "Swiftly generate Auto Layout constraints.",
    "description": "Swiftly generate Auto Layout constraints and interact with them with all of Apple's built in functions.",
    "homepage": "",
    "license": "MIT",
    "authors": {
        "Imperiopolis": "[email protected]"
    "source": {
        "git": "",
        "tag": "2.0.0"
    "social_media_url": "",
    "platforms": {
        "ios": "8.0"
    "requires_arc": true,
    "source_files": "Swiftly/*.swift"

Pin It on Pinterest

Share This