ios - 对成员 'upload(_:to:method:headers:interceptor:)' 的模糊引用

Question

我正在使用 Alamofire 按按钮上传图片，但它在

处显示错误

AF.upload(multipartFormData: { MultipartFormData line of method

(注意:Alamofire.upload 在 Alamofire 5.0 更新后改为 AF.upload)

@IBAction func btnUploadImage(_ sender: UIButton) {

    let uploadDict = ["user_id":getUserId] as [String:String]

    AF.upload(multipartFormData: { MultipartFormData in

                let image :Data = UIImageJPEGRepresentation(self.uploadImg.image!, 1.0)!

                MultipartFormData.append(image, withName: "image" , fileName: "image.jpeg" , mimeType: "image/jpeg")
                for(key,value) in uploadDict{

                    MultipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)}

            }, to: "http://XXXXXXXXXXXXXXXX/uploadImage", encodingCompletion: {
                EncodingResult in
                switch EncodingResult{
                case .success(let upload, _, _):
                    upload.responseJSON { response in
                        debugPrint("SUCCESS RESPONSE: \(response)")
                    }
                case .failure(let encodingError):

                    print("ERROR RESPONSE: \(encodingError)")

                }        })

//此代码的 View Controller

import UIKit
import Alamofire
class updateVC: UIViewController, UIImagePickerControllerDelegate,UINavigationControllerDelegate {

//MARK:- OUTLETS
@IBOutlet weak var tFeditName: UITextField!
@IBOutlet weak var tFusername: UITextField!
@IBOutlet weak var tFemail: UITextField!
@IBOutlet weak var uploadImg: UIImageView!
@IBOutlet weak var tVeditAddress: UITextView!


//MARK:- DECLARATIONS

var imagePicker = UIImagePickerController()

var editName = String()
var editUserName = String()
var editEmail = String()
var editImage = UIImage()
var editAddress = String()
var getUserId = String()

//MARK:- LIFE CYCLE
override func viewDidLoad() {
    super.viewDidLoad()

    imagePicker.delegate = self

    tFeditName.text = editName
    tFusername.text = editUserName
    tFemail.text = editEmail
    uploadImg.image = editImage
    tVeditAddress.text = editAddress

}
//MARK:- CUSTOM FUNCTIONS

func postJSON() {

    let param = ["fullname":tFeditName.text!,"username":tFusername.text!,"email":tFemail.text!,"address":tVeditAddress.text!,"user_id":getUserId] as NSDictionary


    AF.request("http://XXXXXXXXXXXXXXXXXXXX/updatedetails", method: .post, parameters: param as? Parameters, encoding: URLEncoding.default).responseJSON { response in

        switch response.result{

        case .success(let json):
            print(json)

            DispatchQueue.main.async {
                print(param)
            }
        case.failure(let Error):

            print(Error)
        }
    }

}

//ImageViewPicker

func openCamera()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.camera) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerController.SourceType.camera
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

func openGallery()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.allowsEditing = true
        imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have permission to access gallery.", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

internal func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {

        uploadImg.image = pickedImage

    }
    picker.dismiss(animated: true, completion: nil)
}



//MARK:- ACTIONS

@IBAction func btnSelectImage(_ sender: UIButton) {

    let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
        self.openCamera()
    }))

    alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
        self.openGallery()
    }))

    alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))

    self.present(alert, animated: true, completion: nil)


}

@IBAction func btnUploadImage(_ sender: UIButton) {

    let image: UIImage? = self.uploadImg.image

    let uploadDict = ["user_id":getUserId] as [String:String]

    AF.upload(multipartFormData: { MultipartFormData in

        let image :Data = (image?.jpegData(compressionQuality: 1))!

        MultipartFormData.append(image, withName: "image" , fileName: "image.jpeg" , mimeType: "image/jpeg")
        for(key,value) in uploadDict{

            MultipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)}

    }, to: "http://XXXXXXXXXXXXXXXX/uploadImage", encodingCompletion: {
        EncodingResult in
        switch EncodingResult{
        case .success(let upload, _, _):
            upload.responseJSON { response in
                debugPrint("SUCCESS RESPONSE: \(response)")
            }
        case .failure(let encodingError):

            print("ERROR RESPONSE: \(encodingError)")

        }        })

}
@IBAction func btnUpdateDetails(_ sender: UIButton) {

    postJSON()
    self.navigationController?.popViewController(animated: true)
}

Answer 1

来自 Alamofire 5.0 迁移指南:

• MulitpartFormData’s API has changed and the top level upload methods to create and upload MultipartFormData have been updated to match other request APIs, so it’s not longer necessary to deal with the Result of the multipart encoding.

所以你的代码应该是这样的:

@IBAction func btnUploadImage(_ sender: UIButton) {
  let uploadDict = ["user_id": "getUserId"] as [String:String]

  AF.upload(multipartFormData: { MultipartFormData in

    let image: Data = self.uploadImg.image!.jpegData(compressionQuality: 1.0)!

     MultipartFormData.append(image, withName: "image" , fileName: "image.jpeg" , mimeType: "image/jpeg")
            for(key,value) in uploadDict {
                MultipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }
        }, to: "http://XXXXXXXXXXXXXXXX/uploadImage", method: .post, headers: ["Content-Type": "application/json", 
         "authorization": "bearer \(token)"])
   .responseJSON { (response) in
            debugPrint("SUCCESS RESPONSE: \(response)")
   }
}

因此您不需要关闭 encodingCompletion 并立即使用 responseJSON。