Swift: Passing a parameter to selector

Question

Using Swift 3, Xcode 8.2.1

Method:

func moveToNextTextField(tag: Int) {
   print(tag)
}

The lines below compile fine, but tag

Answer 1

You cannot pass a custom parameter through a Timer action.

Either

#selector(moveToNextTextField)
...
func moveToNextTextField()

or

#selector(moveToNextTextField(_:))
...
func moveToNextTextField(_ timer : Timer)

is supported, nothing else.

To pass custom parameters use the userInfo dictionary.