Passing parameters to the method called by a NSTimer

Question

How can I pass a parameter to the method called by a NSTimer? My timer looks like this:

[NSTimer scheduledTimerWithTimeInterval:4 target:self selector:@selec         


        

Answer 1

Additional example in Swift using Dictionary literal for passing parameters to the method called by NSTimer:

override func viewDidLoad() {
    super.viewDidLoad()

    let dictionary: [String : AnyObject] = ["first element" : "Jordan",
                                            "second element" : Int(23)]

    NSTimer.scheduledTimerWithTimeInterval(NSTimeInterval(0.41),
                                           target: self,
                                           selector: "foo:",
                                           userInfo: dictionary,
                                           repeats: false)
}

func foo(timer: NSTimer) {
        let dictionary: [String : AnyObject] = timer.userInfo! as! [String : AnyObject]
        let firstElement: String = dictionary["first element"] as! String
        let secondElement: Int = dictionary["second element"] as! Int
        print("\(firstElement) - \(secondElement)")
}