Swift How to add the shouldReceiveTouch on Switch? - swift

Question

I'm trying to add in my project shouldReceiveTouch on the UISwitch but i have a error
class ViewController: UIViewController,UIGestureRecognizerDelegate {
var newSwitch: UISwitch!
var deleteButtonIndex:Int!
var deleteSwitchIndex:Int!
let gesture = UILongPressGestureRecognizer()
func CreateSwitchWithIndex(index:Int) {
let newSwitch = UISwitch()
newSwitch.tintColor = UIColor.blackColor()
newSwitch.on = false
newSwitch.tag = index+1;
newSwitch.addTarget(self, action: Selector("switchSen:"), forControlEvents: UIControlEvents.ValueChanged)
self.view.addSubview(newSwitch)
newSwitch.setOn(false, animated: true)
let newSwitchConstraintL = NSLayoutConstraint(item: newSwitch, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 50)
let newSwitchConstraintH = NSLayoutConstraint(item: newSwitch, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 50)
let coordX = 368
let coordY = 190
newSwitchConstraintX = NSLayoutConstraint(item: newSwitch, attribute: .CenterX, relatedBy: .Equal, toItem: view, attribute: .Left, multiplier: 0, constant: CGFloat(coordX))
newSwitchConstraintY = NSLayoutConstraint(item: newSwitch, attribute: .CenterY, relatedBy: .Equal, toItem: view, attribute: .Left, multiplier: 0, constant: CGFloat(coordY))
view.addConstraints([newSwitchConstraintX,newSwitchConstraintY,newSwitchConstraintH,newSwitchConstraintL])
var longPress = UILongPressGestureRecognizer(target: self, action: "menu:")
longPress.minimumPressDuration = 1
longPress.delegate = self
newSwitch .addGestureRecognizer(longPress)
}
func switchSen(sender:UISwitch!) {
if (sender.on == true){
println("on")
}
else{
println("off")
}
}
func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
if(touch.view == newSwitch){
return false
}else{
return true
}
}
func menu(gesture:UILongPressGestureRecognizer) {
if(gesture.state == UIGestureRecognizerState.Began){
self.deleteButtonIndex = gesture.view?.tag
self.deleteSwichIndex = gesture.view?.tag
becomeFirstResponder()
var menu = UIMenuController.sharedMenuController()
var deleteItem = UIMenuItem(title: "Delete", action: Selector("delete"))
menu.menuItems = [deleteItem]
var lastLocation:CGPoint = gesture.locationInView(view)
menu.setTargetRect(CGRectMake(lastLocation.x, lastLocation.y, 0.0, 0.0), inView: view)
menu.setMenuVisible(true, animated: true)
}
}
func delete(){
println("Delete")
}
}
I just get this error : fatal error: unexpectedly found nil while unwrapping an Optional value on if(touch.view == newSwitch)
How to add the shouldReceiveTouch on Switch ?

Answer 1

Please try to use this line
let newSwitch: UISwitch!
instead of
var newSwitch: UISwitch!