swift2 - 带有 Swift 2.0 的 Alamofire Manager 被取消

Question

我有一个 Swift 2.0 ApiManager 类，使用 Alamofire 2.0 和以下初始化:

var manager:Manager

init() {
    var defaultHeaders = Alamofire.Manager.sharedInstance.session.configuration.HTTPAdditionalHeaders ?? [:]
    defaultHeaders["Authorization"] = "Bearer \(UserAccount.sharedInstance.token)"

    let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
    configuration.HTTPAdditionalHeaders = defaultHeaders

    manager = Alamofire.Manager(configuration: configuration)
}

示例函数:

func getMe(completion:(jsonObject: NSDictionary) -> ()) {
    manager.request(.GET, Constants.apiURL + "me").responseJSON { request, response, result in

        print(self.manager) //THIS LINE FIXES IT

        switch result {
        case .Success(let json):
            completion(jsonObject: json as! NSDictionary)
        case .Failure(let data, let error):
            print("Error: \(__FUNCTION__)\n", data, error)
        }
    }
}

我收到的错误:

Error Domain=NSURLErrorDomain Code=-999 "cancelled"

请求似乎被取消，因为管理器正在被解除分配。添加打印语句可以防止管理器被释放，然后它就可以完美运行。但我正在努力寻找更好的解决方案。

任何帮助，将不胜感激!

Answer 1

我遇到了同样的问题，我用它来解决它

class Session {
    static let sharedInstance = Session()

     private var manager : Manager?

        func ApiManager()->Manager{
            if let m = self.manager{
                return m
            }else{
                let defaultHeaders = ["X-Version":"Some header"]

                let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
                configuration.HTTPAdditionalHeaders = defaultHeaders

                let tempmanager = Alamofire.Manager(configuration: configuration)
                self.manager = tempmanager
                return self.manager!
            }
        }
    }

然后我用

    Session.sharedInstance.ApiManager().request(...