How to upload images to a server in iOS with Swift?

Question

It won't work, how to send an image from an iOS Swift app to my PHP server?

@IBAction func upload(sender: UIButton) {      var imageData = UIImageJPEGRepresentation(img.image, 90)    // println(imageData)     let url = NSURL(string:"http://www.i35.club.tw/old_tree/test/uplo.php")     //let cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData     //var request = NSMutableURLRequest(URL: url, cachePolicy: cachePolicy, timeoutInterval: 10)     var request = NSMutableURLRequest(URL: url)     request.HTTPMethod = "POST"      // set Content-Type in HTTP header     let boundaryConstant = "----------V2ymHFg03esomerandomstuffhbqgZCaKO6jy";     let contentType = "multipart/form-data; boundary=" + boundaryConstant     NSURLProtocol.setProperty(contentType, forKey: "Content-Type", inRequest: request)     request.HTTPBody = imageData     // set data     //var dataString = "adkjlkajfdadf"     //let requestBodyData = (dataString as NSString).dataUsingEncoding(NSUTF8StringEncoding)     //request.HTTPBody = requestBodyData       //      request.addValue(contentType, forHTTPHeaderField: "Content-Type")     request.addValue("multipart/form-data", forHTTPHeaderField: "Accept")     //     // set content length      //NSURLProtocol.setProperty(requestBodyData.length, forKey: "Content-Length", inRequest: request)      var response: NSURLResponse? = nil     var error: NSError? = nil     let reply = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&error)      let results = NSString(data:reply!, encoding:NSUTF8StringEncoding)     println("API Response: \(results)") }  //take photo func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!) {       var selectedImage : UIImage = image      img.image = selectedImage     UIImageWriteToSavedPhotosAlbum(selectedImage, nil, nil, nil)     self.dismissViewControllerAnimated(true, completion: nil)  } 

Answer 1

I have taken the photo by user's choice and written code for swift 2 and iOS9

    func imageUploadRequest(imageView imageView: UIImageView, uploadUrl: NSURL, param: [String:String]?) {          //let myUrl = NSURL(string: "http://192.168.1.103/upload.photo/index.php");          let request = NSMutableURLRequest(URL:uploadUrl);         request.HTTPMethod = "POST"          let boundary = generateBoundaryString()          request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")          let imageData = UIImageJPEGRepresentation(imageView.image!, 1)          if(imageData==nil)  { return; }          request.HTTPBody = createBodyWithParameters(param, filePathKey: "file", imageDataKey: imageData!, boundary: boundary)          //myActivityIndicator.startAnimating();          let task =  NSURLSession.sharedSession().dataTaskWithRequest(request,             completionHandler: {                 (data, response, error) -> Void in                 if let data = data {                      // You can print out response object                     print("******* response = \(response)")                      print(data.length)                     // you can use data here                      // Print out reponse body                     let responseString = NSString(data: data, encoding: NSUTF8StringEncoding)                     print("****** response data = \(responseString!)")                      let json =  try!NSJSONSerialization.JSONObjectWithData(data, options: .MutableContainers) as? NSDictionary                      print("json value \(json)")                      //var json = NSJSONSerialization.JSONObjectWithData(data, options: .MutableContainers, error: &err)                      dispatch_async(dispatch_get_main_queue(),{                         //self.myActivityIndicator.stopAnimating()                         //self.imageView.image = nil;                     });                  } else if let error = error {                     print(error.description)                 }         })         task.resume()       }       func createBodyWithParameters(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {         let 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     }      func generateBoundaryString() -> String {         return "Boundary-\(NSUUID().UUIDString)"     }  }// extension for impage uploading  extension NSMutableData {      func appendString(string: String) {         let data = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)         appendData(data!)     } } 

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--------- following code for the php side

<?php  $firstName = $_POST["firstName"]; $lastName = $_POST["lastName"]; $userId = $_POST["userId"];  $target_dir = "media";  if(!file_exists($target_dir)) { mkdir($target_dir, 0777, true); }  $target_dir = $target_dir . "/" . basename($_FILES["file"]["name"]);  if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_dir))  { echo json_encode([ "Message" => "The file ". basename( $_FILES["file"]["name"]). " has been uploaded.", "Status" => "OK", "userId" => $_REQUEST["userId"] ]);  } else {  echo json_encode([ "Message" => "Sorry, there was an error uploading your file.", "Status" => "Error", "userId" => $_REQUEST["userId"] ]);  }