使用未解决的标识符swift 3

Question

So I have an old app that needs to be updated and this was the original code that worked:

myBtn.addTarget(nil, action:("addNewObject"), for:.touchUpInside)

"addNewObject" is a function common in several different classes of which an instance of myBtn will exist. However after trying to update the code to Swift 3 as below, I now get the "Use of unresolved identifier" error.

myBtn.addTarget(nil, action:(#selector(addNewObject)), for:.touchUpInside)

Answer 1

You should not use nil , use self

myBtn.addTarget(self, action: #selector(addNewObject), for: .touchUpInside)

Implement addNewObject method like this,

@IBAction func addNewObject() {
    //Your code goes here
}

Answer 2

The target can not be nil. Change "nil" to "self".

myBtn.addTarget(self, action: (#selector(addNewObject)), for: .touchUpInside)