swift - 类型 CCC 不符合协议“NSObjectProtocol”

Question

我不明白为什么我的代码不起作用。这里是：

class Test: NSURLSessionDataDelegate {

    func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {

        if(error == nil) {
            print("Hallo")
        } else {
            print(error?.userInfo)
        }
    }

    func createRequest() {

        let dictionary = [
            "mailAddress":"foo@example.com",
            .....
        ]

        let nsData: NSData?
        do {
            nsData = try NSJSONSerialization.dataWithJSONObject(dictionary, options: NSJSONWritingOptions(rawValue:0))
        } catch _ {
            nsData = nil
        }

        let defaultConfigObject = NSURLSessionConfiguration.defaultSessionConfiguration()
        let defaultSession = NSURLSession(configuration: defaultConfigObject, delegate: self, delegateQueue: NSOperationQueue.mainQueue())
        let url = NSURL(string: "http:...")!
        let urlRequest = NSMutableURLRequest(URL: url)
        urlRequest.HTTPMethod = "POST"
        urlRequest.HTTPBody = nsData
        urlRequest.addValue("application/json", forHTTPHeaderField: "Content-Type")
        let dataTask = defaultSession.dataTaskWithRequest(urlRequest)
        dataTask.resume()

    }
}

和错误：

类型测试不符合协议“NSObjectProtocol”。

有任何想法吗？

score 41 · Accepted Answer

如果跟进继承链，NSURLSessionDataDelegate继承NSURLSessionTaskDelegate，继承NSURLSessionDelegate，继承，NSObjectProtocol。该协议具有各种必需的方法isEqual(_:)，例如respondsToSelector(_:)您的类未实现的方法。

通常你会在这里做的是让你的类继承NSObject符合NSObjectProtocol：

class Test: NSObject, NSURLSessionDataDelegate {
    ...
}

score 0 · Accepted Answer

当我输入错误NSObject为时出现此错误NSOBject，因为如果您输入错误，那么它在技术上不符合NSObject. 希望对某人有所帮助。

score 0 · Accepted Answer

I tried to make my class conform to protocol FBSDKSharingDelegate and got the same error. When I tried to make my subclass with superclass UIView conform to the protocol, the error went away.

swift - 类型 CCC 不符合协议“NSObjectProtocol”

3 回答 3

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