Swift unrecognized selector sent to instance error

Question

I recently converted my project from Objective-C to Swift and in doing so I acquired this error whenever I click a button in the table view\'s cell. I have multiple cells be

Answer 1

For Swift 2.2 with Xcode 8:

self.followedButton.addTarget(parentView, action: #selector(CustomCell.followButtonClick(_:)), forControlEvents: .TouchUpInside)

Answer 2

For Swift3, you need to change the following:

self.followedButton.addTarget(parentView, action: Selector(("followedButtonClick")), for: .touchUpInside)

With:

self.followedButton.addTarget(parentView, action: #selector(self.followButtonClick(_:)), forControlEvents: .touchUpInside)

Answer 3

Two changes for Swift 3:

The selector should look like:

#selector(ClassName.followButtonClick(_:))

The function should have an underscore:

@IBAction func followButtonClick(_ sender: UIButton!) { ...

Notice that these two should be in the same class, otherwise, make sure you initialize the ClassName class.

If you want the selector method(followButtonClick(_:)) to be in the UITableViewCell class. Remove @IBAction(I don't think you need it there):

func followButtonClick(_ sender: UIButton!) { ...