ResponseSerializer'无法使用Swift 3调用非函数类型'NSHTTPURLResponse?''的值 [英] ResponseSerializer 'cannot call value of non-function type 'NSHTTPURLResponse?'' with Swift 3
问题描述
在更新到Xcode 8 beta 6之前,我一直在使用以下代码。它类似于来自Alamofire存储库的此示例。今天早上我将我的Alamofire库更新到最新的 swift3
分支,现在与beta 6兼容。它显示错误:无法调用非值-function type'HTTPURLResponse?'
存在类似的问题这里,但它不是基于当前版本的Swift和Alamofire。
I had been using the following code without issue until updating to Xcode 8 beta 6. It is similar to this example from the Alamofire repository. This morning I updated my Alamofire library to the latest swift3
branch, which is now compatible with beta 6. It shows the error: Cannot call value of non-function type 'HTTPURLResponse?'
A similar question exists here, but it is not based on the current version of Swift and Alamofire.
据我所知,这个错误是因为它认为我我试图返回请求
属性响应
而不是函数响应(responseSerializer:< T>,completionHandler:<(响应< T.SerializedObject,T.ErrorObject>) - > Void>)
并且它认为这是因为中的类型错误我正在传递给函数的responseSerializer
或 completionHandler
。
From what I understand, this error is because it thinks that I am trying to return the Request
property response
instead of the function response(responseSerializer: <T>, completionHandler: <(Response<T.SerializedObject, T.ErrorObject>) -> Void>)
and it thinks this because of a type error in either the responseSerializer
or completionHandler
that I'm passing into the function.
如何调整此代码以使其与函数声明和编译器兼容?
How can I adjust this code to make it compatible with the function declaration and compiler?
我添加 @escaping
到completionHandler来纠正错误。
I added @escaping
to the completionHandler to correct the error.
import Foundation
import Alamofire
import SwiftyJSON
extension Alamofire.Request {
public func responseObject<T: ResponseJSONObjectSerializable>(_ completionHandler: @escaping (Response<T, NSError>) -> Void) -> Self {
let responseSerializer = ResponseSerializer<T, NSError> { request, res, data, error in
guard let responseData = data else {
let error = DFError.error(withDFCode: .dataSerializationFailed, failureReason: "Data could not be serialized because input data was nil.")
return .failure(error)
}
let jsonData: Any?
do {
jsonData = try JSONSerialization.jsonObject(with: responseData, options: [])
} catch {
let error = DFError.error(withDFCode: .jsonSerializationFailed, failureReason: "JSON could not be serialized into response object")
return .failure(error)
}
let json = SwiftyJSON.JSON(jsonData!)
if let newObject = T(json: json) {
return .success(newObject)
}
let error = DFError.error(withDFCode: .jsonSerializationFailed, failureReason: "JSON could not be serialized into response object")
return .failure(error)
}
return response(responseSerializer: responseSerializer, completionHandler: completionHandler)
//Error: Cannot call value of non-function type 'HTTPURLResponse?'
}
}
推荐答案
你需要标记你的 completionHandler
as @escaping
。
You need to mark your completionHandler
as @escaping
.
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