AFHTTPSessionManager子類swift

Question

用自定義會話配置創建AFHTTPSessionManager的單調子類的正確方法是什么？

class DefaultSessionConfiguration: NSURLSessionConfiguration {

    override init () {

        super.init()

        self.HTTPShouldSetCookies = true
        HTTPCookieStorage?.cookieAcceptPolicy = NSHTTPCookieAcceptPolicy.Always
        HTTPAdditionalHeaders = [ "Content-Type": "application/json"];
    }

}

let baseUrl = "https://google.com"

class HTTPManager: AFHTTPSessionManager {


    static let _sharedAPIManager = HTTPManager(baseURL: NSURL(string: baseUrl)!, sessionConfiguration:DefaultSessionConfiguration())

    class var sharedInstance : HTTPManager {
        return _sharedAPIManager
    }

    override init(baseURL url: NSURL!, sessionConfiguration session:NSURLSessionConfiguration? ) {

        super.init(baseURL: url, sessionConfiguration: session)
        self.responseSerializer = AFJSONResponseSerializer() as AFJSONResponseSerializer
        self.requestSerializer = AFJSONRequestSerializer() as AFJSONRequestSerializer

    }

}

嘗試將此代碼用作self.sessionManager = HTTPManager.sharedInstance它始終崩潰並顯示消息

[MyApp.DefaultSessionConfiguration setHTTPShouldSetCookies：]：無法識別的選擇器已發送到實例0x7f99f8f31b70

但是MyApp.DefaultSessionConfiguration是NSURLSessionConfiguration的子類，因此默認情況下具有此方法。

那么，我們如何解決這個問題呢？

Answer 1

問題是您不應該直接實例化NSURLSessionConfiguration 。 您應該通過調用以下類方法之一來實例化它： defaultSessionConfiguration ， ephemeralSessionConfiguration或backgroundSessionConfigurationWithIdentifier 。 例如：

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
configuration.HTTPShouldSetCookies = true
configuration.HTTPCookieStorage?.cookieAcceptPolicy = .Always