changing the value of a variable from another class in swift

Question

I have created a custom UISegment Control

@IBDesignable class CardsSegmentedControl: UIControl {

private var labels = [UILabel]()
var thumbView = UIView()


var items: [String] = ["Saved Cards", "Add Card"] {
    didSet {
        setupLabels()
    }
}

var selectedIndex : Int = 0 {
    didSet {
        displayNewSelectedIndex()
    }
}
....
}

Now I wish to change the value of the variable selectedIndex in the viewController where I am adding this custom segment control in.

I guess it is a problem of how to access/change variables from another class.

I tried to create a class func which would set the value of the selectedIndex but I cannot get it to access the selectedIndex variable either.

Still pretty new to Swift so please bear with me.

no I dont.. Should I set the value of selectedIndex using the init function and then use it to change the value elsewhere as well? — genaks
– genaks, Commented Aug 24, 2015 at 9:13
selectedIndex is instance variable, so won't be accessed from class functions — BaSha
– BaSha, Commented Aug 24, 2015 at 9:14

Vito Royeca · Accepted Answer · 2015-08-24 09:13:29Z

3

// Inside your ViewController class, create a new instance of your custom class
var cardSegmentedControl = CardSegmentedControl()

// here, change its property value
cardSegmentedControl.selectedIndex = 1

answered Aug 24, 2015 at 9:13

Vito Royeca

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1 Comment

Vito Royeca Over a year ago

Take a look at this Stackoverflow thread for understanding willSet and didSet actions: stackoverflow.com/questions/24006234/…

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