Loading multiple images using other options in Swift

Question

Currently, I have uploaded only one image to the server from the server side script using the code below. Now I have a UIImage array, I want to know how I can use UIImageJPEGRepresentation(myImageView.image!, 0.1) to place all the images in a UIImageView array?

 func uploadImage() { let postPictureUrl = NSURL(string: "http://www.23look.com/merchant/verify") let request = NSMutableURLRequest(URL: postPictureUrl!) request.HTTPMethod="POST" let param=[ "mer_name" : shopNameUITF.text!, "mer_tel" : shopTelephoneUITF.text!, "mer_address" : shopAddressUITF.text!, "lat" : "39.6892", "lng" : "115.9239", "token": KeychainWrapper.stringForKey("tokenValue")!, "mer_type": "smalll" ] let abc = KeychainWrapper.stringForKey("tokenValue")! let boundary = generateBoundaryString() request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type") let imageData = UIImageJPEGRepresentation(myImageView.image!, 0.1) if imageData==nil { print("image data is nil"); return } request.HTTPBody = createBodyWithParameters(param, filePathKey: "mer_license", imageDataKey: imageData!, boundary: boundary) let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error in if error != nil { print("error=\(error)") return } //You can print out response object print("***** response = \(response)") // Print out reponse body let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding) print("**** response data = \(responseString!)") do { let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary dispatch_async(dispatch_get_main_queue(), { print(NSString(data: data!, encoding:NSUTF8StringEncoding)!) print(json) }) } catch let err { print(err) } } task.resume() } func generateBoundaryString() -> String { return "Boundary-\(NSUUID().UUIDString)" } func createBodyWithParameters(parameters:[String:String]?, filePathKey: String?, imageDataKey:NSData, boundary: String) -> NSData { var body=NSMutableData() if parameters != nil { for(key, value) in parameters! { body.appendString("--\(boundary)\r\n") body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n") body.appendString("\(value)\r\n") } } let filename = "user-profile.jpg" let mimetype = "image/jpg" body.appendString("--\(boundary)\r\n") body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n") body.appendString("Content Type: \(mimetype)\r\n\r\n") body.appendData(imageDataKey) body.appendString("\r\n") body.appendString("-\(boundary)-\r\n") return body } 

The following parameters are required:

mer_name - String

mer_tel - String

mer_address - string

lng - string

lat - string

mer_licence - file type (my images will be uploaded here)

token - string

mer_type - string

Answer 1

You must make changes to createBodyWithParameters as shown below ...

When you have some images ...

  func createBodyWithParameters(parameters: NSMutableDictionary?,boundary: String) -> NSData { let body = NSMutableData() if parameters != nil { for (key, value) in parameters! { if(value is String || value is NSString){ body.appendString("--\(boundary)\r\n") body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n") body.appendString("\(value)\r\n") } else if(value is [UIImage]){ var i = 0; for image in value as! [UIImage]{ let filename = "image\(i).jpg" let data = UIImageJPEGRepresentation(image,1); let mimetype = mimeTypeForPath(filename) body.appendString("--\(boundary)\r\n") body.appendString("Content-Disposition: form-data; name=\"\(key)\"; filename=\"\(filename)\"\r\n") body.appendString("Content-Type: \(mimetype)\r\n\r\n") body.appendData(data!) body.appendString("\r\n") i++; } } } } body.appendString("--\(boundary)--\r\n") // NSLog("data %@",NSString(data: body, encoding: NSUTF8StringEncoding)!); return body } func generateBoundaryString() -> String { return "Boundary-\(NSUUID().UUIDString)" } func mimeTypeForPath(path: String) -> String { let pathExtension = path.pathExtension var stringMimeType = "application/octet-stream"; if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension!, nil)?.takeRetainedValue() { if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() { stringMimeType = mimetype as NSString as String } } return stringMimeType; } func createRequest (param : NSMutableDictionary , strURL : String) -> NSURLRequest { let boundary = generateBoundaryString() let url = NSURL(string: strURL) let request = NSMutableURLRequest(URL: url!) request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type") request.HTTPMethod = "POST" request.HTTPBody = createBodyWithParameters(param, boundary: boundary) return request } 

Answer 2

  doOnMain { Loading.sharedInstance.startloading() } let url = NSURL(string:"URL") let request = NSMutableURLRequest(url: url! as URL) request.httpMethod = "POST" let headers = ["Accept-Language": "en"] request.allHTTPHeaderFields = headers let boundary = generateBoundaryString() //define the multipart request type request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type") if (imgRefund.image == nil){ return } // First Image let image_data = imgRefund.image!.pngData() if(image_data == nil){ return } // Second Image let image_data1 = imgRefund1.image!.pngData() if(image_data1 == nil){ return } let body = NSMutableData() let fname = "filename" let fname1 = "filename1" let mimetype = "image/png" let parameters = ["key":"value","key":"value"] if parameters != nil { for (key, value) in parameters { body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!) body.append("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n".data(using: String.Encoding.utf8)!) body.append("\(value)\r\n".data(using: String.Encoding.utf8)!) } } // First Image body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!) body.append("Content-Disposition:form-data; name=\"test\"\r\n\r\n".data(using: String.Encoding.utf8)!) body.append("hi\r\n".data(using: String.Encoding.utf8)!) body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!) body.append("Content-Disposition:form-data; name=\"parameter\"; filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!) // paramenter name body.append("Content-Type: \(mimetype)\r\n\r\n".data(using: String.Encoding.utf8)!) body.append(image_data!) body.append("\r\n".data(using: String.Encoding.utf8)!) body.append("--\(boundary)--\r\n".data(using: String.Encoding.utf8)!) // Second Image body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!) body.append("Content-Disposition:form-data; name=\"test\"\r\n\r\n".data(using: String.Encoding.utf8)!) body.append("hi\r\n".data(using: String.Encoding.utf8)!) body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!) body.append("Content-Disposition:form-data; name=\"parameter1\"; filename=\"\(fname1)\"\r\n".data(using: String.Encoding.utf8)!) // paramenter name 1 body.append("Content-Type: \(mimetype)\r\n\r\n".data(using: String.Encoding.utf8)!) body.append(image_data1!) body.append("\r\n".data(using: String.Encoding.utf8)!) body.append("--\(boundary)--\r\n".data(using: String.Encoding.utf8)!) request.httpBody = body as Data let session = URLSession.shared let task = session.dataTask(with: request as URLRequest) { ( data, response, error) in guard let _:NSData = data! as NSData, let _:URLResponse = response, error == nil else { print("error") return } let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) print("****** response data = \(responseString!)") do { let json = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary print("****** response json = \(json!)") if(json?.value(forKey: "status") as! Int == 200){ print(json) } else{ } }catch{ print(error) } } task.resume() func generateBoundaryString() -> String { return "Boundary-\(NSUUID().uuidString)" }