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iOS Introduction to Auto Layout in iOS Auto Layout in Code Constraints in Code

Can someone figure out the mistake in the below code cause it's being compiled on Xcode & causing a compiler error here

getting a "Your code couldn't be compiled" error in the quiz.

class MyViewController: UIViewController {

    let sampleView = UIView()

    override func viewDidLoad() {

    override func viewWillLayoutSubviews() {
        sampleView.translatesAutoresizingMaskIntoConstraints = false

        // Add constraints below
            sampleView.heightAnchor.constraint(equalToConstant: 50.0),
            sampleView.widthAnchor.constraint(equalToConstant: 50.0),
            sampleView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            sampleView.centerYAnchor.constraint(equalTo: view.centerYAnchor)

1 Answer

Okay you are doing sampleView programmatically, so you need to create it's frame, if this was storyboard that would be created for you.