ios - Alamofire:取消(暂停)文件上传

Question

我正在使用 Alamofire 上传一个文件:

    Alamofire.Manager.upload(
        APIManager.Router.UploadFileRoute,
        multipartFormData : { multipartFormData in
            multipartFormData.appendBodyPart(data: audioData, name: "file", fileName: "file.m4a", mimeType: "audio/m4a")
        }, encodingCompletion: { result in
            switch result {
            case .Success(let request, _, _):
              break
            case .Failure(let encodingError):
              break
            }
    })

文件上传开始后如何取消(暂停)？

documentation建议我在 Request 对象上调用 suspend() ，但是如何使用上面的文件上传 API 获取 Alamofire.Request 对象？此 API 不返回任何 Alamofire.Request 对象。

Answer 1

事实证明请求仅在编码后准备就绪(参见内联注释)

Alamofire.Manager.upload(
    APIManager.Router.UploadFileRoute,
    multipartFormData : { multipartFormData in
        multipartFormData.appendBodyPart(data: audioData, name: "file", fileName: "file.m4a", mimeType: "audio/m4a")
    }, encodingCompletion: { result in
        switch result {
        case .Success(let request, _, _):
          // Reference the request here (will get here immediately)
             request.responseJSON { response in
                  // This closure executes only after request succeeds or fails
             }
          break
        case .Failure(let encodingError):
          break
        }
})