How to connect 3 UIButton to one outlet

问题

I try to do something like this @IBoutlet var buttons : [UIButton]

but I can't drag button to this outlet

Any idea, how can I achieve that?

回答1:

It's possible to do that.

Here is how:

• Create an array of IBOutlets
• Add multiple UIElements (Views) in your Storyboard ViewController interface
• Select ViewController (In storyboard) and open connection inspector
• There is option 'Outlet Collections' in connection inspector (You will see an array of outlets there)
• Connect if with your interface elements

-

class ViewController2: UIViewController {


    @IBOutlet var collection:[UIView]!


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

回答2:

To add a button to an existing array outlet, drag the other way 'round: from the circle in the margin of the view controller to the button. (No need to hold the control key while doing this drag.)

来源：https://stackoverflow.com/questions/46731185/how-to-connect-3-uibutton-to-one-outlet