@selector() in Swift?

Question

I\'m trying to create an NSTimer in Swift but I\'m having some trouble.

NSTimer(timeInterval: 1, target: self, selector: test(), us         


        

Answer 1

It may be useful to note where you setup the control that triggers the action matters.

For example, I have found that when setting up a UIBarButtonItem, I had to create the button within viewDidLoad or else I would get an unrecognized selector exception.

override func viewDidLoad() {
    super.viewDidLoad() 

    // add button
    let addButton = UIBarButtonItem(image: UIImage(named: "746-plus-circle.png"), style: UIBarButtonItemStyle.Plain, target: self, action: Selector("addAction:"))
    self.navigationItem.rightBarButtonItem = addButton
}

func addAction(send: AnyObject?) {     
    NSLog("addAction")
}