NSNotification cannot find selector

Question

I'm posting a notification via the default center, like so:

NSNotificationCenter.defaultCenter().postNotificationName(ColorDidGetTappedNotification, object: self)

I'm observing the notification in another instance like so:

NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("colorDidGetTapped:"), name: ColorDidGetTappedNotification, object: nil)
....
func colorDidGetTapped(notification: NSNotification) {
    println("Notification recieved")
}

But I get an unrecognized selector exception:

UPDATE 1

*** NSForwarding: warning: object 0x7d564490 of class '_D.GameModel' does not implement methodSignatureForSelector: -- trouble ahead
Unrecognized selector -[_D.GameModel colorDidGetTapped:]

This is essentially a duplicate of http://stackoverflow.com/questions/24415662/object-x-of-class-y-does-not-implement-methodsignatureforselector-in-swift. — Martin R, Mar 01 '15 at 21:20
@LeonardoSavioDabus I don't think you're supposed to go around editing people's questions like that, especially the code! — Youssef Moawad, Mar 02 '15 at 07:09

score 5 · Answer 1 · answered Mar 02 '15 at 07:29

5

Check GameModel is NSObject's subclass

class GameModel: NSObject {

}

answered Mar 02 '15 at 07:29

Huynh Inc

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score 0 · Answer 2 · answered Mar 07 '15 at 20:22

0

Try to observe the Notification using this method: addObserverForName(_:object:queue:usingBlock:). Instead of a selector you pass a block

answered Mar 07 '15 at 20:22

Yariv Nissim

13,273
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NSNotification cannot find selector

2 Answers2