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Start your free trialAttila Marosi
6,144 PointsHello, could anyone help me? I've stucked in this exercise (I'm using Swift 3).
In the Code Challenge, I have to add the following constraints to the sampleView:
- Height constraint of 50 points
- Width constraint of 50 points
- Center horizontally and vertically in center
Please help! Thank you in advance!
class MyViewController: UIViewController {
let sampleView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(sampleView)
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
sampleView.translatesAutoresizingMaskIntoConstraints = false
// Add constraints below
let a = NSLayoutConstraint(item: sampleView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 50.0)
let b = NSLayoutConstraint(item: sampleView, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 50.0)
let c = NSLayoutConstraint(item: sampleView, attribute: .centerX, relatedBy: .equal, toItem: view, attribute: .centerX, multiplier: 1.0, constant: 0.0)
let d = NSLayoutConstraint(item: sampleView, attribute: .centerY, relatedBy: .equal, toItem: view, attribute: .centerY, multiplier: 1.0, constant: 0.0)
view.addConstraints([a,b,c,d])
}
}
Attila Marosi
6,144 PointsAttila Marosi
6,144 PointsFinally I solved it.