Swift3：类型“ NSObject”不符合协议“ URLAuthenticationChallengeSender”

Question

在Swift3中，“ NSURLAuthenticationChallengeSender”已更改为“ URLAuthenticationChallengeSender”，因此在委托方法中，其方法也从NSURlAuthentication更改为URLAuthentication（自动Xcode编辑）

我很困惑我是否仍然缺少任何委托方法，但包括所有下面的委托方法仍然显示如上错误。

如果有人遇到相同的问题，请您帮忙！！！

迅捷3

class GeneralFunctions: NSObject,NSURLConnectionDataDelegate,URLAuthenticationChallengeSender {

}

委托方法

func connection(connection: NSURLConnection, willSendRequestForAuthenticationChallenge challenge: URLAuthenticationChallenge) {
}

func connection(connection: NSURLConnection, didReceiveResponse:URLResponse)
{
}

func connection(connection: NSURLConnection, didReceiveData data: NSData) {
}

func connection(connection: NSURLConnection, didFailWithError error: NSError) {
    print("Connection Failed")
}


func connection(connection: NSURLConnection, didReceiveAuthenticationChallenge challenge: URLAuthenticationChallenge) {
    //sanju swift3 160922-- re verify 

//        let myCredential = URLCredential(forTrust: challenge.protectionSpace.serverTrust!)
   //        challenge.sender!.useCredential(myCredential, forAuthenticationChallenge: challenge)
}

func connection(connection: NSURLConnection, canAuthenticateAgainstProtectionSpace protectionSpace: URLProtectionSpace) -> Bool {
    return true
}
func URLSession(session: URLSession, didReceiveChallenge challenge: URLAuthenticationChallenge, completionHandler: (URLSession.AuthChallengeDisposition, URLCredential) -> Void) {

    let protectionSpace = challenge.protectionSpace

    let theSender = challenge.sender

    if protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {

        if let theTrust = protectionSpace.serverTrust{

            let theCredential = URLCredential(trust: theTrust)

            theSender?.use(theCredential, for: challenge)

            return
        }
    }

    theSender?.performDefaultHandling!(for: challenge)

    return
}

Answer 1

因此，在Swift 3中，某些方法的签名已略有变化。 我也面临这个问题。 对于所有必需的委托方法，只需开始输入该方法的前几个字母，然后按ctrl +空格，它将自动完成该方法的正确签名