CODEWITHSUNDEEP
iosswiftdelegates
Marin
Marin

Reputation: 12910

Access viewcontroller from button

I have ButtonClass which has buttonTapped method implemented.

The button itself is on the view. I need to add an extra layer when the button is pressed but I don't have access to self in the ButtonClass because self is a button not the view... Basically I need to access self.view found in the viewController but that's another class. If I create an new instance like so viewController() it won't help because it wont' be the same instance.

Upvotes: 0

Views: 510

Answers (1)

J. Koush
J. Koush

Reputation: 1068

If you're adding the buttonTapped method from the custom button class then you need to create a delegate, and call the delegate method when the user the buttonTapped method is called.

In your custom button class

protocol YourCustomButtonDelegate {
    func changeSomethingInTheView()
}

class YourCustomButtonClass {

    var delegate: YourCustomButtonDelegate?

    func buttonTapped(_ sender: AnyObject) {
        if let delegate = delegate {
            delegate.changeSomethingInTheView()
        }
    }
}

And in the ViewController

class ViewController: UIViewController, CustomCellDelegate {

    @IBOutlet weak var button: YourCustomButton!

    override func viewDidLoad() {
        super.viewDidLoad()

        button.delegate = self
    }

    func changeSomethingInTheView() {
        // write your code here...
    }
}

Upvotes: 1

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