I have used Alamofire for uploading images in multipart form data. I am successful in achieving my target. Each time I upload an image, I call the "uploadDocWebService" function. So the number of times the function is called, is equal to the number of images. I am hopeless in identifying the result of each call. My images are uploaded successfully. In case there is a server failure, or internet connection failure the uploading fails, I cannot identify which image I should delete from the view, that has failed. I pass indexPath as a parameter for each image upload. But that indexPath updates to the latest image upload before I receive the result for the first image upload. Can any one suggest me a better approach for this situation.
Here is the code I use for image upload:
func uploadDocWebservice(fileUrl: NSURL , progressView : PWProgressView , index : String , imageData : NSData? , name : String , mimeType : String , uploadType : String){ let url = "\(kBaseURL)\(uploadDocsUrl)" var type = String() var networkGroupId = String(SingletonClass.sharedInstance.selectedNetworkId!) if SingletonClass.sharedInstance.groupPopUp == true { type = "group" networkGroupId = String(SingletonClass.sharedInstance.selectedSubNetworkOrGroup!) }else { type = "network" } Alamofire.upload( .POST, url, multipartFormData: { multipartFormData in if uploadType == "Image" { multipartFormData.appendBodyPart( data: imageData! , name: "file", fileName: name, mimeType: mimeType) }else { multipartFormData.appendBodyPart(fileURL: fileUrl, name: "file") } multipartFormData.appendBodyPart(data:"\(SingletonClass.sharedInstance.tokenId)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"token") multipartFormData.appendBodyPart(data:"\(type)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"networkGroup") multipartFormData.appendBodyPart(data:"\(networkGroupId)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"networkGroupId") }, encodingCompletion: { encodingResult in switch encodingResult { case .Success(let upload, _, _): upload.progress { bytesRead, totalBytesRead, totalBytesExpectedToRead in let ratio: Float = Float(totalBytesRead) / Float(totalBytesExpectedToRead) // Call main thread. dispatch_async(dispatch_get_main_queue(), { progressView.progress = ratio }) } upload.responseJSON { response in let dataString = NSString(data: response.data!, encoding:NSUTF8StringEncoding) print(dataString) self.edited = true do{ let json = try NSJSONSerialization.JSONObjectWithData(response.data!, options: .MutableLeaves) as? NSDictionary if let success = json!["success"] as? Int { if success == 1 { let id = json!["response"]!.objectForKey("id") as! String let docName = "\(json!["response"]!.objectForKey("name") as! String).\(json!["response"]!.objectForKey("ext") as! String)" let dic = ["name" : docName , "Id" : id] self.uploadedDocsIdArray.addObject(dic) self.uploadedArrayJustNames.addObject(docName) print(self.uploadedDocsIdArray) }else { // delete image from view here } } }catch{ // delete image from view here invokeAlertMethod("Error", msgBody: "Invalid Json", delegate: self) } } case .Failure(let encodingError): print(encodingError) } } ) } If I get to know the which result is associated to which call, that could help me delete that particular image from view.
1 Answers
Answers 1
You need to keep a reference to the original request, should be the same for upload requests I think. Try the following:
func uploadDocWebservice(fileUrl: NSURL , progressView : PWProgressView , index : String , imageData : NSData? , name : String , mimeType : String , uploadType : String) -> Request? { return Alamofire.upload ... } Then you can simply have an array of requests i.e: var requests: [Request](). When calling Alamofire.upload / Alamofire .request - it returns a Request object.
You can then do:
var requests: [Request]() let request = uploadDocWebservice(...) requests.append(request) Then you can just loop through the array and check whatever request you wish.
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