Xcode how to combine UI buttons?

Question

i'm making a custom keyboard and wanna add shadow to buttons. so added some code(keys.layer~~) in viewDidLoad()

but i can't set multiple button to one IBOutlet
what i want is all keys have 'keys(IBOutlet)' as value(?) is it possible? if it's not, any other thing is fine :) help!

this is my code (pls ignore next keyboard button)

@IBAction func keys(sender: AnyObject) {

}

@IBOutlet weak var keys: UIButton!

@IBOutlet var nextKeyboardButton: UIButton!

override func updateViewConstraints() {
    super.updateViewConstraints()

    // Add custom view sizing constraints here
}

override func viewDidLoad() {
    super.viewDidLoad()

    loadInterface()
    keys.layer.cornerRadius = 4.0;
    keys.layer.shadowColor = UIColor.blackColor().CGColor
    keys.layer.shadowOffset = CGSizeMake(0.0, 2.0)
    keys.layer.masksToBounds = false
    keys.layer.shadowRadius = 1.0
    keys.layer.shadowOpacity = 0.5

try [this](http://stackoverflow.com/questions/28702043/can-i-change-the-properties-of-all-the-buttons-in-my-swift-app)..It may help — Gokul G, Aug 23 '16 at 13:00
It is not possible to assign an IBOutlet to more than one Interface Object. It's a unique Identifier for a reason. In your situation I would suggest creating a subclass of UIButton suited for your needs. — Maurice, Aug 23 '16 at 13:08
You can assign multiple buttons from IB to IBOutletCollection of UIButton type. And then in loop you can modify them all. — Pavel Gatilov, Aug 23 '16 at 13:55

Nirav D · Accepted Answer · 2016-08-23T12:58:22.227

0

You can make UIButton extension like this and used with all the object of your custom keyboard Button

extension UIButton {

    func setShadow() {
        self.layer.cornerRadius = 4.0;
        self.layer.shadowColor = UIColor.blackColor().CGColor
        self.layer.shadowOffset = CGSizeMake(0.0, 2.0)
        self.layer.masksToBounds = false
        self.layer.shadowRadius = 1.0
        self.layer.shadowOpacity = 0.5
    }
}

Now you can call this method with your button object like this way

self.nextKeyboardButton.setShadow()

Edit:

If you want to access multiple Button object with same object you can create an Array of UIButton, and store all the Outlet Button inside that array.

var buttonArray = [UIButton]()

edited Aug 23 '16 at 12:58

answered Aug 23 '16 at 12:55

Nirav D

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could you explain more? where should i add these code? – Yumin Hwang Aug 23 '16 at 12:56
You can declare this extension in your current viewController file, but outside the `class` definition, not inside the `class`. – Nirav D Aug 23 '16 at 13:00
unfortunately i coudlnt adapt your answer :c i'm kinda swift newbie so need really deep long explanation ;-; – Yumin Hwang Aug 24 '16 at 05:24
but thanks! for trying to help :) i'll try later again when i get used to using swift more :))!! – Yumin Hwang Aug 24 '16 at 05:25
Have you work in objective c, in objective c you can create category, in swift extension is equivalent to category of objective c. – Nirav D Aug 24 '16 at 05:26
Are you getting what i am saying? – Nirav D Aug 24 '16 at 05:27
ah no i don't know objective c :e only know java, c , python ;-; – Yumin Hwang Aug 24 '16 at 05:35
@YuminHwang If you search on google abt swift extension you will get idea what i have done. – Nirav D Aug 24 '16 at 05:37

Xcode how to combine UI buttons?

1 Answers1