How to change view of my viewController programmatically?

Question

I can change the class of the view in an UIViewController using the Storyboard like so:

How can I achieve the same effect programmatically? I've tried this:

convenience init() {
    print("convenience init")
    self.init(nibName: nil, bundle: nil)
    self.view = MTKView()
}

But it doesn't work. Seems to change the view for the MTKView, but the frame doesn't resize like it does when doing this by the Storyboard.

score 9 · Answer 1 · edited Nov 29 '20 at 10:18

9

You should implement the loadView function in your view controller and assign an instance of your custom view to the view controller's view property:

override func loadView() {
    self.view = MyCustomView(frame: ...)
}

edited Nov 29 '20 at 10:18

Tomas Jablonskis

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answered Jan 25 '17 at 11:57

Paulw11

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Doesn't work. The app crashes. So it doesn't have the same effect as visually setting the class in Storyboard. I'm looking for that same result. – Vladislav Jan 25 '17 at 12:00
What is the crash? – Paulw11 Jan 25 '17 at 12:01
Was a Metal related crash, by setting the frame it worked: self.view = MTKView(frame: UIScreen.main.bounds). Thanks. – Vladislav Jan 25 '17 at 12:05

How to change view of my viewController programmatically?

1 Answers1