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使用自定义会话配置创建 AFHTTPSessionManager 的单调子类的正确方法是什么？

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

    }

}

在尝试使用此代码时，因为 self.sessionManager = HTTPManager.sharedInstance它总是因消息而崩溃

[MyApp.DefaultSessionConfiguration setHTTPShouldSetCookies:]：无法识别的选择器发送到实例 0x7f99f8f31b70

但是 MyApp.DefaultSessionConfiguration 是 NSURLSessionConfiguration 的子类，并且肯定有这个方法。

那么，我们如何解决这个问题呢？

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1 回答 1

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问题是您不应该NSURLSessionConfiguration直接实例化 a 。您应该通过调用以下类方法之一来实例化它defaultSessionConfiguration：ephemeralSessionConfiguration或backgroundSessionConfigurationWithIdentifier. 例如：

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
configuration.HTTPShouldSetCookies = true
configuration.HTTPCookieStorage?.cookieAcceptPolicy = .Always
于 2015-11-22T09:49:26.520 回答