Xcode Allow User to Upload Multiple Images
268 votes
1 answers
ios - Xcode Swift/PHP/SQL upload multiple images failed
I am learning "posting images to server", only when I tried the multiple images uploading, it always failed with reporting(JSON error, from my Xcode warning on iOS devices), it seems error is in the PHP side? But I am new, so anyone tin can aid me to detect whatever solution. Xcode:
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httpBody function
func createBodyWithParameters(parameters: [String : Any]?,boundary: String) -> NSData { let body = NSMutableData()
if parameters != nil { for (primal, value) in parameters! { body.append("--\(boundary)\r\due north".data(using: .utf8)!) body.append("Content-Disposition: grade-information; name=\"\(primal)\"\r\n\r\north".data(using: .utf8)!) body.append("\(value)\r\n".data(using: .utf8)!) } } for prototype in images { allow filename = "\(NSUUID().uuidString).jpg" let imageData = image.jpegData(compressionQuality: ane) permit lineOne = "--" + purlieus + "\r\n" body.append(lineOne.data(using: .utf8, allowLossyConversion: faux)!) permit lineTwo = "Content-Disposition: form-data; name=\"files\"; filename=\"\(filename)\"\r\n" body.append(lineTwo.data(using: .utf8, allowLossyConversion: false)!) let lineThree = "Content-Type: epitome/jpg\r\n\r\northward" torso.suspend(lineThree.data(using: .utf8, allowLossyConversion: false)!) body.append(imageData!) permit lineFive = "\r\n" body.append(lineFive.data(using: .utf8, allowLossyConversion: false)!) } permit lineSix = "--" + boundary + "--\r\north" body.append(lineSix.data(using: .utf8, allowLossyConversion: false)!) return body}
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http asking function
func createRequest(parameters: [String : Whatsoever] , url : URL) -> URLRequest { var request = URLRequest(url: url) request.httpMethod = "Postal service" let boundary = "Boundary-\(NSUUID().uuidString)" request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type") request.httpBody = createBodyWithParameters(parameters: parameters, boundary: boundary) as Data return asking}
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multi images upload functions func uploadPostWithMultipleImages() {
guard allow id = currentUser?["id"], let text = postTextView.text else { render } // declaring keys and values to be sent to the server let parameters = ["user_id": id, "text": text, "files": images] // declaring URL and request let url = URL(string: "http://localhost/projectExample/uploadPostMultipleImages.php")! let request = createRequest(parameters: parameters, url: url) URLSession.shared.dataTask(with: request) { (information, response, error) in DispatchQueue.main.async { // if error if fault != zippo { Helper().showAlert(title: "Server Mistake", message: error!.localizedDescription, in: cocky) return } // admission data / json exercise { // safe fashion of accessing received data from the server guard let data = data else { Helper().showAlert(title: "Data Error", bulletin: error!.localizedDescription, in: cocky) return } // converting information to JSON let json = try JSONSerialization.jsonObject(with: data, options: .allowFragments) every bit? NSDictionary // safe mode of accessing / casting JSON guard let parsedJSON = json else { render } // if post is uploaded successfully -> come back to HomeVC, else -> evidence error message if parsedJSON["status"] as! String == "200" { // post notification in gild to update the posts of the user in other viewControllers NotificationCenter.default.mail service(name: NSNotification.Name(rawValue: "uploadPost"), object: naught) // improvement self.dismiss(animated: true, completion: aught) } else { Helper().showAlert(title: "Error", message: parsedJSON["bulletin"] every bit! String, in: self) return } // error while accessing data / json } catch { Helper().showAlert(title: "JSON Error", message: mistake.localizedDescription, in: self) render } } }.resume()}
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PHP upload code
// generating accented path to the binder for every user with his unique id$binder = '/Applications/XAMPP/xamppfiles/htdocs/projectExample/posts/' . $user_id;
// creating fodler if it doesn't exist if (!file_exists($folder)) { mkdir($folder, 0777, true); } else { $return['folder_message'] = 'Could not create a directory'; }
foreach($_FILES['files']['name'] every bit $key =>$value) { $file = $_FILES['files']['name'][$cardinal]; $file_tmp = $_FILES['files']['tmp_name'][$fundamental]; // path to the file. Full path of the file $path = $folder . '/' . basename($file); if (move_uploaded_file($file_tmp, $path)) { // creating URL link to the prototype uploaded $pictures .= 'http://localhost/projectExample/posts/' . $user_id . '/' . $file. " "; $return['pictures'] = $pictures; }}//foreach
// Insert details into database $consequence = $access->insertPost($user_id, $text, $pictures);
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Solution:
I utilise your swift code and upload images successfully, so I am certain it's your PHP code that has some mistake. please brand sure that you lot have return a json that is correctly-formatted like :
echo '{"code" : 200}'
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