Ambiguous use of 'connection(_:didReceive:)'

Question

static let didReceiveResponseSelector : Selector = #selector((NSURLConnectionDataDelegate.connection(_:didReceive:)) as (NSURLConnectionDataDelegate) ->(NSURLConnection,URLResponse) -> ())

This code is returning error:

Ambiguous use of 'connection(_:didReceive:)'

I referred to the official evolution thread of Apple on GitHub, I respected the syntax but is not working:

Referencing the Objective-C selector of a method

Unfortunately, disambiguating with `as` casting does not work for methods declared in protocols. Please check [this thread](http://stackoverflow.com/q/39221563/6541007). — OOPer, May 14 '17 at 02:47

score 1 · Answer 1 · answered May 12 '17 at 16:00

1

NSURLConnectionDataDelegate is a protocol, you can't create a Selector using NSURLConnectionDataDelegate.connection(_:didReceive:), you must used an implementation of NSURLConnectionDataDelegate like :

class YourDelegateImplementation: NSURLConnectionDataDelegate {
     public func connection(_ connection: NSURLConnection, didReceive data: Data) {
     }
}

And then you can create a Selector like this :

let yourDelegate: YourDelegateImplementation = YourDelegateImplementation()
let yourSelector : Selector = #selector(yourDelegate.connection(_:didReceive:))

answered May 12 '17 at 16:00

Dany Sousa

229
2
16

no it's possible for other delegate so it have to be possible for this one too, and your code not work – SOUA Hamza May 13 '17 at 19:26
look at this #selector(NSURLConnectionDataDelegate.connectionDidFinishLoading(_:) – SOUA Hamza May 31 '17 at 13:18

score 0 · Answer 2 · answered May 13 '17 at 20:29

0

Don't cast the Selector:

let didReceiveResponseSelector = #selector(NSURLConnectionDelegate.connection(_:didReceive:))

It's also worth noting that the delegate function connection(_ connection: NSURLConnection, didReceive challenge: URLAuthenticationChallenge) has been deprecated in favor of connection(_ connection: NSURLConnection, willSendRequestFor challenge: URLAuthenticationChallenge).

answered May 13 '17 at 20:29

JAL

41,701
23
172
300

sorry I need the selector for didReceive data: Data – SOUA Hamza May 15 '17 at 07:40
you are confusing between NSURLConnectionDataDelegate and NSURLConnectionDelegate – SOUA Hamza May 31 '17 at 13:19

score 0 · Accepted Answer · answered Jun 01 '17 at 09:27

0

solved, just add "?":

    static let didReceiveResponseSelector : Selector = #selector((NSURLConnectionDataDelegate.connection(_:didReceive:)) as ((NSURLConnectionDataDelegate) -> (NSURLConnection,URLResponse) -> void)?)

answered Jun 01 '17 at 09:27

SOUA Hamza

146
2
10

Ambiguous use of 'connection(_:didReceive:)'

3 Answers3