Don't know why the switch control always send false Value

Question

I make a simple WKInterface with a switch control and make a function for that switch to show up the value of switch like this:

I don't know why when test the switch,the result I received always false? please explain and show me how to fix. As I thought the out put of that switch will change from false to true and move on like that.. What's wrong in here? or the Xcode's bug with switch?

Answer 1

Try this:

1. First declare outlet for switch like this:

     @IBOutlet weak var mySwitch: UISwitch!
   

2. In viewDidLoad implement listener (target-action):

   override func viewDidLoad() {
         super.viewDidLoad()
         // Do any additional setup after loading the view, typically from a nib.
   
         mySwitch.addTarget(self, action: "switchChangedValue:", forControlEvents: UIControlEvents.ValueChanged)
   }
   

3. Declare this function where you will get response every time switch value is changed:

   func switchChangedValue(sender:UISwitch){
    if sender.isKindOfClass(UISwitch){
       if sender.on {
           println("Switch is ON")
           println("\(sender.on)")
       } else {
           println("Switch is OFF")
           println("\(sender.on)")
       }
   }
   

   }