Quick q regarding Selectors in XCode (Swift)

Question

Basically, I have been using Start Developing iOS Apps (Swift) by Apple for learning and I have come across some code that simply does not work - the Apple version as well.

button.addTarget(self, action: #selector(RatingControl.ratingButtonTapped(_:)), 
forControlEvents: .TouchDown)

And the errors are:

Expected ',' separator (between "action:" and "#selector" TWICE)
Expected expression in lists of expressions

Possible duplicate of [@selector() in Swift?](http://stackoverflow.com/questions/24007650/selector-in-swift) — gotnull, Jul 25 '16 at 02:02
@gotnull - changed #selector -> @selector() yet still gives me error #2 — Charlotte Smith, Jul 25 '16 at 02:05
The selector syntax that the sample code uses was added in Xcode 7.3 — dan, Jul 25 '16 at 02:08
Just say `button.addTarget(self, action: "ratingButtonTapped:", forControlEvents: .TouchDown)` instead — Amateur User, Jul 25 '16 at 02:10

score 0 · Answer 1 · answered Jul 25 '16 at 02:47

0

You must define funcion ratingButtonTapped() in your code.

answered Jul 25 '16 at 02:47

Thành Ngô Văn

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10

and if you don't use xcode version 7.3 or later, you can try define selector like this: action : Selector("funcName") – Thành Ngô Văn Jul 25 '16 at 02:51

Quick q regarding Selectors in XCode (Swift)

1 Answers1