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iOS Build an Interactive Story App with Swift 2 Creating the User Interface Programmatically Continuing Our Story

Why I am getting this error in Swift: expected ',' separator when I use #selector like in the video?

My code is identical to the one in the video but I keep getting an error message. Here is my code:

    if let firstChoice = page.firstChoice {
            firstChoiceButton.setTitle(firstChoice.title, forState: .Normal)
            firstChoiceButton.addTarget(self, action: #selector(PageController.loadFirstChoice), forControlEvents: .TouchUpInside)
        } else {
            firstChoiceButton.setTitle("Play Again", forState: .Normal)
        }

        if let secondChoice = page.secondChoice {
            secondChoiceButton.setTitle(secondChoice.title, forState: .Normal)
        }
    }
}

Swift does not like the #selector(). I can't figure out what the problem here is. Perhaps could it be that my version of Xcode isn't up to date? Thanks!

3 Answers

It's definitely possible that your version of Xcode isn't up to date! The new #selector syntax will only work in Xcode 7.3 (or newer). Which are you using?

Comb Giss
Comb Giss
589 Points

Its just Selector("loadFirstChoice")

Awesome, that was the culprit. I updated Xcode and now everything works. Thanks again Nathan! For other Treehouse users, it does take a good amount of time to update Xcode so please be sure to set aside some time to do so.