Xcode 7.3 / Swift 2: “No method declared with Objective-C selector” warning

Question

I\'ve been using selectors for a while, and even after migrating to Swift I was able to use them without issues. That\'s how I was using on Swift 2 without issues until I up

Answer 1

On Swift 4 I had to add @objc before the func to get rid of the warnings.

This is how I call the func with NSTimer:

 Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(ViewController.intro), userInfo: nil, repeats: false)

This is how the func is declared:

     @objc func intro () {

          // do your stuff here         

     }

I also updated the setting as the Xcode requested:

No more warnings, everything seems to be working fine.