ios - Alamofire，错误消息使用未声明的类型 'GenericResponseSerializer'

Question

我遵循 ray wanderlich 的 alamofire/swift turorial，我使用 swift 2.0 和 alamofire 3.0 beta3。现在我已经处理了一些小问题，但我仍然坚持这个问题

  message: Use of undeclared type 'GenericResponseSerializer'
 Generic type 'Result' specialized with too few type parameters (got 1, but expected 2)

这是我的代码的一部分

extension Alamofire.Request {

    /** Response serializer for images from: http://www.raywenderlich.com/85080/beginning-alamofire-tutorial */
    class func imageResponseSerializer() -> GenericResponseSerializer<UIImage> {
        return GenericResponseSerializer { request, response, data in

            guard let validData = data else {
                let failureReason = "Data could not be serialized. Input data was nil."
                let error = Error.errorWithCode(.DataSerializationFailed, failureReason: failureReason)
                return .Failure(data, error)
            }

            if let image = UIImage(data: validData, scale: UIScreen.mainScreen().scale) {
                return Result<UIImage>.Success(image)
            }
            else {
                return .Failure(data, Error.errorWithCode(.DataSerializationFailed, failureReason: "Unable to create image."))
            }

        }
    }

    /** Convenience method for returning images from: http://www.raywenderlich.com/85080/beginning-alamofire-tutorial */
    func responseImage(completionHandler: (NSURLRequest?, NSHTTPURLResponse?, Result<UIImage>) -> Void) -> Self {
        return response(responseSerializer: Request.imageResponseSerializer(), completionHandler: completionHandler)
    }
}

ps: 我在哪里/如何下载 Alamofire 2.0 ??

Answer 1

您是否尝试过使用 AlamofireImage ？似乎是一个不错的扩展。 Alamofire 2.0.2 , 但你应该测试通过 Carthage 安装，非常简单干净的工具。