An extension that simplifies the work with Swift AutoLayout by writing cleaner, more natural and easy-reading code.

Installation

For now you're able to clone repo in your project or download ZIP folder manually.

git clone https://github.com/votehserxam/AutoLayout.git

After cloning don't forget to add AutoLayout folder in Project Navigator in Xcode.

Usage

All in one

Setup constraints in one place by adding all layout anchors that you need.

thisView.constraints(
    top: thatView.safeArea.top,
    left: thatView.left(20),
    right: thatView.right(20),
    height: .equalToConstant(180)
)

All layout anchors properties are available in shorten form:

• top
• left
• bottom
• right
• centerX
• centerY
• firstBaseline
• lastBaseline
• width
• height

Notice that left and right actually mean leading and trailing, so no need to keep in mind RTL anymore, it just works. Also don't need to add minus to bottom and right offsets.

Width and height constraints are defined in the same old ways like .equalToConstant(100) or .equalTo(someView.width), but with more options and combinations.

How to fit one view in another?

If you need to fit one view into another, there is a solution...

// Matching one view with another and making offset from edges.
thisView.match(
    view: thatView,
    offset: .init(
        top: 40,
        bottom: 40
    )
)

// Just matching superview.
thisView.matchSuperview()

How to center views?

Just specify the view with size to center another one in.

// Also you can define offset from center.
thisView.center(
    in: thatView,
    width: .equalTo(thatView.width),
    height: .equalToConstant(120),
    yOffset: 12
)

// Also possible to center in superview.
thisView.centerInSuperview()

Notice that if you don't specify width or height values in centerInSuperview(), it will be taken as a superview's size values.