Swift-Put Differing Types of UI Elements in an array

Question

I'm trying to make an array of UI elements, but with different types inside. Some are image views, and some are buttons. I am familiar with making a collection of the same type, such as

@IBOutlet var things: [UIButton]!

but that code only makes an array of buttons, while I need to add image views to that also. How can I make an array that accepts both types?

Note that this can't be an IBOutlet. Do you mean to mark it IBOutletCollection, or did you add that by accident? — Rob Napier
– Rob Napier, Commented May 10, 2017 at 21:42

ikajava · Accepted Answer · 2017-05-10 21:03:59Z

3

Just use array of UIViews. var arrayOfThings : [UIView]

answered May 10, 2017 at 21:03

ikajava

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kuzdu · Accepted Answer · 2017-05-10 21:01:39Z

2

 @IBOutlet weak var view2: UIView!

var uiElements:[UIView] = []

override func viewDidLoad() {
    super.viewDidLoad()

    let button1 = UIButton()
    let image1 = UIImageView()

    uiElements.append(button1)
    uiElements.append(image1)
    uiElements.append(view2)

    for element in uiElements {

        if element is UIButton {
            print("it's a button")
        } else if element is UIImageView {
            print("it's imageview")
        } else if element is UIView {
            print("it's uiview")
        } else {
            print("error")
        }
    }
 }

Output:
it's a button
it's imageview
it's uiview

edited May 10, 2017 at 21:01

answered May 10, 2017 at 20:28

kuzdu

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1 Comment

rmaddy Over a year ago

Why use AnyObject? Use UIView since it is an array of views.

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