Hands-On Design Patterns with Swift

Early view access in initializer

Sometimes, you will want a view controller to always have the same fixed bounds, such as, for example, the width of the screen. Suppose that you have designed a nib with the view defined into it, and you want to make sure that whenever you create a new instance of this controller, the size will always be correct.

You may be tempted to write the following code:

class OtherBadController: UIViewController {    init() {        super.init(nibName: "OtherBadController", bundle: nil)        print("before")        let width = UIScreen.main.bounds.width        self.view.frame = CGRect(x: 0, y: 0, width: width, height: width)        print("after")    }        override func viewDidLoad() {        super.viewDidLoad()        print("loaded")    }}// Output:beforeloadedafter

In this ...