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Start your free trialMatthew Foster
7,442 PointsIntroduction to Auto Layout final challenge uses completely different syntax than what the videos and Xcode 7.3.1
Are you supposed to do this challenge and differently than just copying the example code?
class MyViewController: UIViewController {
let blueView = UIView()
let greenView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(greenView)
view.addSubview(blueView)
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
blueView.translatesAutoresizingMaskIntoConstraints = false
greenView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
NSLayoutConstraint(item: blueView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 100.0),
NSLayoutConstraint(item: blueView, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 150.0),
NSLayoutConstraint(item: blueView, attribute: .left, relatedBy: .equal, toItem: view, attribute: .leftMargin, multiplier: 1.0, constant: 8.0),
NSLayoutConstraint(item: blueView, attribute: .top, relatedBy: .equal, toItem: self.topLayoutGuide, attribute: .bottom, multiplier: 1.0, constant: 8.0),
NSLayoutConstraint(item: blueView, attribute: .right, relatedBy: .equal, toItem: view, attribute: .rightMargin, multiplier: 1.0, constant: -8.0)
])
// Add constraint code below
}
}
1 Answer
Mitch Little
11,870 PointsHi Mathew,
At the beginning of the course it is noted that the content may be outdated due to the release of Xcode 8 and Swift 3.
Although the syntax is different, it is conceptually the same and is important to know how to create and apply constraints to view programatically. You will go back over this topic when creating the 'Interactive Story App' in the 'Intermediate iOS Development' track.
It is good practice and beneficial to your knowledge to figure things out yourself anyhow, so congrats!
All the best,
Mitch
Matthew Foster
7,442 PointsMatthew Foster
7,442 PointsI got it to work but I could have done exactly the same without watching any of the videos because they had no bearing on the answers for this challenge.