Use of unresolved identifier 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)

After I change to self I still get "Use of unresolved identifier" error. — JeremyRaven, May 15 '18 at 07:02
Try following solution https://stackoverflow.com/questions/28996730/use-of-unresolved-identifier-in-swift — atalayasa, May 15 '18 at 07:25
myBtn.addTarget(self, action:#selector(anyClass.addNewObject), for:.touchUpInside) I think the issue might be that I need a generic thing like "anyClass" so any class can call addNewObject as long as that class has addNewObject(). So what syntax can I use in place of anyClass here? — JeremyRaven, May 15 '18 at 11:14

score 0 · Answer 1 · answered May 15 '18 at 06:58

0

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
}

answered May 15 '18 at 06:58

PPL

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1
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30

score 0 · Answer 2 · answered May 15 '18 at 06:58

0

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

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

answered May 15 '18 at 06:58

Keyur Tailor

424
3
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After I change to self I still get "Use of unresolved identifier" error. – JeremyRaven May 15 '18 at 07:03
Then there must be some kind of typo in your code. (may be the name of the method or name of the variable or something) Please check for that also. – Keyur Tailor May 15 '18 at 07:09

Use of unresolved identifier swift 3

2 Answers2