Created
October 27, 2016 05:40
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`NSLayoutConstraint` + `addConstraints(_ constraints: [NSLayoutConstraint])` style
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override func viewDidLoad() { | |
super.viewDidLoad() | |
let newView = UIView() | |
newView.backgroundColor = UIColor.red | |
newView.translatesAutoresizingMaskIntoConstraints = false | |
view.addSubview(newView) | |
let horizontalConstraint = NSLayoutConstraint(item: newView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerX, multiplier: 1, constant: 0) | |
let verticalConstraint = NSLayoutConstraint(item: newView, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerY, multiplier: 1, constant: 0) | |
let widthConstraint = NSLayoutConstraint(item: newView, attribute: NSLayoutAttribute.width, relatedBy: NSLayoutRelation.equal, toItem: nil, attribute: NSLayoutAttribute.notAnAttribute, multiplier: 1, constant: 100) | |
let heightConstraint = NSLayoutConstraint(item: newView, attribute: NSLayoutAttribute.height, relatedBy: NSLayoutRelation.equal, toItem: nil, attribute: NSLayoutAttribute.notAnAttribute, multiplier: 1, constant: 100) | |
view.addConstraints([horizontalConstraint, verticalConstraint, widthConstraint, heightConstraint]) | |
} |
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