ios - AFHTTPSessionManager 子类 swift

Question

使用自定义 session 配置创建 AFHTTPSessionManager 单例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

    }

}

当尝试将此代码用作 self.sessionManager = HTTPManager.sharedInstance 时，它总是崩溃并显示消息

[MyApp.DefaultSessionConfiguration setHTTPShouldSetCookies:]: unrecognized selector sent to instance 0x7f99f8f31b70

但 MyApp.DefaultSessionConfiguration 是 NSURLSessionConfiguration 的子类，并且 defenetly 具有此方法。

那么，我们如何解决这个问题呢？

Answer 1

问题是您不应该直接实例化 NSURLSessionConfiguration。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