“classname has no member functionname” when adding UIButton target

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In Swift 3, method reference for: func ratingButtonTapped(button: UIButton) becomes ratingButtonTapped(button:).

So, using #selector(RatingControl.ratingButtonTapped(button:)) also work.

And if you want to keep #selector(RatingControl.ratingButtonTapped(_:)), then you need to declare the ratingButtonTapped method as:

func ratingButtonTapped(_ button: UIButton) { //<- `_`
    print("Button pressed đź‘Ť")
}

And if you have only one ratingButtonTapped method in the class, you can address the selector as #selector(RatingControl.ratingButtonTapped) or simply (from inside RatingControl class) #selector(ratingButtonTapped).

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