在异步函数上同时获取进度和错误操作

Question

我在主页 VC 中使用 Alamofire 上传了一个文件。但是在class函数中上传func。所以我没有得到进度操作。我想我必须写委托方法。

有人会帮助我吗？

我的问题在ViewController!!!

在SendPhoto.class

class SendPhoto {


    func send() {
        Alamofire.upload(
        multipartFormData: { multipartFormData in
            ...
    },
        to: "",
        headers:headers,
        encodingCompletion: { encodingResult in
            switch encodingResult {
            case .success(let upload, _, _):
                upload.uploadProgress {progress in
                    print(progress.fractionCompleted)

                }
                upload.responseJSON { response in

                }
            case .failure(let encodingError):
                print("File Upload Error")
                print(encodingError)
            }
    })
}}

在ViewController

class HomepageVC: UIViewController .. {

    override func viewDidLoad() {
        super.viewDidLoad()
    }


    @IBAction func sendAction(_ sender: Any) {

        SendPhoto().send()

        // I want to keep this function progress and print to a label or etc. !!!
    }

}

Answer 1

但是你的问题没有完成所以假设

Alamofire returns 任何上传请求的 UploadRequest 对象，除了 multipart 请求

上传请求有属性进度

/// The progress of fetching the response data from the server for the request.
open var progress: Progress { return dataDelegate.progress }

可用于跟踪上传进度

编辑

您必须通过闭包将数据传递给您的视图控制器

这是你的方法

private func uploadAnyThing  (progress:@escaping ((Progress) -> Void) , completed:@escaping ((_ success:Bool,_ error:Error?) -> Void)) {
    Alamofire.upload(multipartFormData: { (data) in

    }, to: "test.com") { (result) in
        switch (result) {
        case .success(let request, _, _):
            request.uploadProgress(closure: { (prog) in
                progress(prog)
            })

            request.responseJSON(completionHandler: { (res) in
                completed(true,nil)

            })

        case .failure(let error) :
            completed(false,error)
            break
        }
    }
}

你可以通过

获得

func test () {
    uploadAnyThing(progress: { (progres) in
        print(progres.fractionCompleted)
    }) { (success, error) in

    }
}

在异步函数上同时获取进度和错误操作

Get Progress and Error operations with the same time on Async functions

ios

swift

alamofire

swift4

alamofireimage