Alamofire 3.0.0-beta.3图像响应序列化

Question

有人可以帮助我，我正在尝试实现Alamofire图像响应序列化方法：imageResponseSerializer，

这是我的代码：

extension Alamofire.Request {
    class func imageResponseSerializer() -> ResponseSerializer<UIImage, NSError> {
        return ResponseSerializer<UIImage, NSError> { request, response, data, error 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(error)
            }

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

    func responseImage(completionHandler: (NSURLRequest?, NSHTTPURLResponse?, Result<UIImage, NSError>) -> Void) -> Self {
        return response(responseSerializer: Request.imageResponseSerializer(), completionHandler: { request, response, result in
            completionHandler(request, response, result)
        })
    }
}

错误：无法调用非函数类型的值'NSHTTPURLResponse？'

我正在使用：Xcode 7.0.1，Swift 2和Alamofire 3.0.0-beta.3

谢谢，

Answer 1

你应该看看AlamofireImage。 1）已经实现了所有这些。 2）它有许多其他很棒的功能，你很可能会发现它们很方便。