Swift create a button as a class variable / member variable

Question

This should be super straightforward. Here's what I am trying to do:

class ViewController: UIViewController{
    var leftBarButton: UIButton;
    var rightBarButton: UIButton;

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

But I am getting an error that viewController has no initializers. I know I need to give the variables default values, so I tried:

var rightBarButton: UIButton(type: UIButtonType.System) as UIButton;

But that's giving me an error about multiple declarations.

Stefan Salatic · Accepted Answer · 2016-03-11 18:28:35Z

1

You need something like this

var rightBarButton: UIButton = UIButton(type: UIButtonType.System)

You need to intialize the button, but if you're not planning to change it I suggest you change it to let

answered Mar 11, 2016 at 18:28

Stefan Salatic

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2 Comments

vacawama Over a year ago

or more succinctly: var rightBarButton = UIButton(type: .System)

Stefan Salatic Over a year ago

Yup. Though he'll probably need a constant button, so: let rightBarButton = UIButton(type: .System)

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