Created
April 15, 2019 01:55
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UIView Anchors for Auto Layout
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import UIKit | |
// MARK: - UIView Anchors for Auto Layout | |
extension UIView { | |
func fillSuperview() { | |
anchor(top: superview?.topAnchor, leading: superview?.leadingAnchor, bottom: superview?.bottomAnchor, trailing: superview?.trailingAnchor) | |
} | |
func anchorSize(to view: UIView) { | |
widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true | |
heightAnchor.constraint(equalTo: view.heightAnchor).isActive = true | |
} | |
func anchor(top: NSLayoutYAxisAnchor?, leading: NSLayoutXAxisAnchor?, bottom: NSLayoutYAxisAnchor?, trailing: NSLayoutXAxisAnchor?, padding: UIEdgeInsets = .zero, size: CGSize = .zero) { | |
translatesAutoresizingMaskIntoConstraints = false | |
if let top = top { | |
topAnchor.constraint(equalTo: top, constant: padding.top).isActive = true | |
} | |
if let leading = leading { | |
leadingAnchor.constraint(equalTo: leading, constant: padding.left).isActive = true | |
} | |
if let bottom = bottom { | |
bottomAnchor.constraint(equalTo: bottom, constant: -padding.bottom).isActive = true | |
} | |
if let trailing = trailing { | |
trailingAnchor.constraint(equalTo: trailing, constant: -padding.right).isActive = true | |
} | |
if size.width != 0 { | |
widthAnchor.constraint(equalToConstant: size.width).isActive = true | |
} | |
if size.height != 0 { | |
heightAnchor.constraint(equalToConstant: size.height).isActive = true | |
} | |
} | |
} |
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