so i have already made a function here is it and how it work :  @IBAction func ValidButton(_ sender: Any) { if(verif(){ //do some stuff }print("it pass throught") } verif() -> Bool { bool = true //do some stuff and make my bool false var lat1 = 0.00       var lat2 = 0.00       var long1 = 0.00       var long2 = 0.00         // where i call my function       getLatLongFromAddress(withAddress: address1) { (lat,long) in         lat1 = lat         long1 = long         print("when i call it : lat1 : ",lat1," long1 : ",long1)                 }       getLatLongFromAddress(withAddress: address2) { (lat,long) in         lat2 = lat         long2 = long         print("when i call it : lat1 : ",lat2," long1 : ",long2)       } //do some stuff return bool } func getLatLongFromAddress(withAddress address: String, completionHandler: @escaping (CLLocationDegrees,CLLocationDegrees) -> Void) {   let geocoder = CLGeocoder()   // Use CLGeocoder to convert the address into coordinates   geocoder.geocodeAddressString(address) { (placemarks, error) in     // Return early if there was an error     guard error == nil else {       return     }           // Return early if no placemarks were found     guard let placemarks = placemarks, !placemarks.isEmpty else {       return     }           // Use the first placemark to obtain the coordinates     let location = placemarks.first!.location     let lat = location!.coordinate.latitude     let long = location!.coordinate.longitude     print("lat : ",lat)     print("long : ",long)     completionHandler(lat,long)   } } here is the log : it pass throught lat : 43.5982309 long : 1.4313821 when i call it : lat1 : 43.5982309 long1 : 1.4313821 lat : 43.6044242 long : 1.4437472 when i call it : lat1 : 43.6044242 long1 : 1.4437472 default

Hi so my function getLatFromAddress() is asynchronous and i need it run normally. func getLatFromAddress(withAddress address: String, completionHandler: @escaping (Double) -> Void) {   let geocoder = CLGeocoder()   // Use CLGeocoder to convert the address into coordinates   geocoder.geocodeAddressString(address) { (placemarks, error) in     // Return early if there was an error     guard error == nil else {       return     }     // Return early if no placemarks were found     guard let placemarks = placemarks, !placemarks.isEmpty else {       return     }     // Use the first placemark to obtain the coordinates     let location = placemarks.first!.location     print("lat : ",location!.coordinate.latitude)     completionHandler(location!.coordinate.latitude)   } } how i use it : lat1 = 0.00 getLat(withAddress: address1) { (result) in         lat1 = result       } print("lat outFunc = ",lat1) log : lat outFunc = 0.00 lat : 43.6044242

so i've already coded a lot of time on swift and i would like to have your opinion. I really think that to succeed in making a responsive application without shooting a bullet is a feat because either we try to use "DeviceLayout" and we have to make the application for all types of devices or we use autoLayout with the storyboard or each new view, each new constraint there is a problem that appears. I know it's technically possible to design directly on the view controller but is it possible to make a view (header, content with scrollView, footer) only in the view controller ? because I spent 8 hours to put a scrollview with a footer and it's still not responsive

Hi, so i am using a CLGeocoder() and i got a async problem and i don't know how to repair because i in my function i need to return a bool value. but in the log we can clearly see the asynchrone in the log . how can i fix it ? i already many many different way to get lat and long from address but all of them got the asychrone problem because is still very similar to my code . if i put my return in mygeocoder "i got Unexpected non-void return value in void function" how can i "synchrone" my code ? Here is my code: //getLongFromAddress is exactely the same func getLatFromAddress(`let` address:String) -> Double { let geocoder = CLGeocoder() var lat = 0.00 geocoder.geocodeAddressString(address) { placemarks, error in let placemark = placemarks?.first if placemark?.location?.coordinate.latitude != nil { lat = (placemark?.location?.coordinate.latitude)! }else { //print(error as Any) } //Here i get my lat print("Lat: \(lat)") } //here my late is still 0.00 return lat } Where I call my function: func checkAddress() -> Bool { var check = true var lat1 = 0.00 var long1 = 0.00 var lat2 = 0.00 var long2 = 0.00 address1 = "Paris" address2 = "London" lat1 = getLatFromAddress(let: address1) long1 = getLongFromAddress(let: address1) lat2 = getLatFromAddress(let: address2) long2 = getLongFromAddress(let: address2) print(lat1," - ",long1) print(lat2," - ",long2) let coordinate₀ = CLLocation(latitude: lat1, longitude: long1) let coordinate₁ = CLLocation(latitude: lat2, longitude: long2) //get the distance to meter and with meterToKiloleter convert meter into kilometer let distance = meterToKilometer(let:coordinate₀.distance(from: coordinate₁)) if distance > 50 { check = false } return check } Here is the log: 0.0 - 0.0 0.0 - 0.0 2022-12-02 18:46:06.936965+0100 Storyboard[10796:272148] [Client] {"msg":"#NullIsland Received a latitude or longitude from getLocationForBundleID that was exactly zero", "latIsZero":0, "lonIsZero":0, "location":'50 67 46 6F 01 00 00 00'} 2022-12-02 18:46:06.938224+0100 Storyboard[10796:272266] [Client] {"msg":"#NullIsland Received a latitude or longitude from getLocationForBundleID that was exactly zero", "latIsZero":0, "lonIsZero":0, "location":'50 27 4F 6F 01 00 00 00'} 2022-12-02 18:46:06.939091+0100 Storyboard[10796:272156] [Client] {"msg":"#NullIsland Received a latitude or longitude from getLocationForBundleID that was exactly zero", "latIsZero":0, "lonIsZero":0, "location":'50 E7 7A 6F 01 00 00 00'} 2022-12-02 18:46:06.939753+0100 Storyboard[10796:272501] [Client] {"msg":"#NullIsland Received a latitude or longitude from getLocationForBundleID that was exactly zero", "latIsZero":0, "lonIsZero":0, "location":'50 E7 57 6F 01 00 00 00'} Lat: 48.8567879 Long: -0.0793965 Lat: 51.5033466 Long: 2.3510768

Hi so i struggle with my collection View i try to follow this tuto : https://zeyad-elassal.medium.com/make-automatic-image-slider-in-ios-770ea1c28109 "canno't make a link because this URL is not a permit domain on this forum sorry" and in the extension i have a bug appear extension HomeClientViewController: UICollectionViewDataSource, UICollectionViewDelegate {   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {     var cell = SliderHomeClient.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as? SliderCollectionViewCellHomeClient     cell?.imageSliderHomeClient.image = sliderImage[indexPath.row]     return cell ?? <#default value#>   }       func collectionView(_ collectionView:UICollectionView, numberOfItemsInSection section: Int) -> Int {     return sliderImage.count   } } i have one error appear : The "imageSliderHomeClient" outlet from the HomeClient to the UIView is invalid. Outlets cannot be connected to repeating content. but i have also see the collection View change here in the tuto was : CollectionView -> CollectionViewCell -> imageView And mine was CollectionView -> CollecitonViewCell -> ContentView -> imageView so i try to delete the image View and rename my contentView as the same as my imageView and remove image.   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {     var cell = SliderHomeClient.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as? SliderCollectionViewCellHomeClient //HERE is different     cell?.imageSliderHomeClient = sliderImage[indexPath.row] //HERE is different     return cell ?? <#default value#>   }       func collectionView(_ collectionView:UICollectionView, numberOfItemsInSection section: Int) -> Int {     return sliderImage.count   } } but i have another error appear : Cannot assign value of type 'UIImage?' to type 'UIView?' how can i fix these to make my collectionView plz i put here my whole code if : import UIKit import Alamofire import SwiftUI class HomeClientViewController: UIViewController {      @IBOutlet weak var dotHomeClient: UIPageControl!   @IBOutlet weak var SliderHomeClient: UICollectionView!    var email: String?       let sliderImage = [UIImage(named: "slide1"),             UIImage(named: "slide2"),             UIImage(named: "slide3"),             UIImage(named: "slide4")]       var timer = Timer()   var counter = 0       override func viewDidLoad() {           super.viewDidLoad()     // Do any additional setup after loading the view.     sliderHomeClient()   }    func sliderHomeClient(){     dotHomeClient.numberOfPages = sliderImage.count     dotHomeClient.currentPage = 0     DispatchQueue.main.async {        self.timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(self.changeImage), userInfo: nil, repeats: true)       }         }       @objc func changeImage() {              if counter < sliderImage.count {        let index = IndexPath.init(item: counter, section: 0)        self.SliderHomeClient.scrollToItem(at: index, at: .centeredHorizontally, animated: true)        dotHomeClient.currentPage = counter        counter += 1      } else {        counter = 0        let index = IndexPath.init(item: counter, section: 0)        self.SliderHomeClient.scrollToItem(at: index, at: .centeredHorizontally, animated: false)         dotHomeClient.currentPage = counter         counter = 1       }    }     } extension HomeClientViewController: UICollectionViewDataSource, UICollectionViewDelegate {   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {     var cell = SliderHomeClient.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as? SliderCollectionViewCellHomeClient     cell?.imageSliderHomeClient = sliderImage[indexPath.row]     return cell ?? <#default value#>   }       func collectionView(_ collectionView:UICollectionView, numberOfItemsInSection section: Int) -> Int {     return sliderImage.count   } //different class class SliderCollectionViewCellHomeClient: UICollectionViewCell {   @IBOutlet weak var imageSliderHomeClient2: UIImageView!   @IBOutlet weak var imageSliderHomeClient: UIView! }

Hi so i have some probleme to send some parameters to my php. when my php don't take post : <?php require_once "connIOS.php"; require_once "validate.php"; $email =validate($_POST['id']); $mdp = validate($_POST['password']); $sql = 'SELECT `Cl_Email`,`Cl_mdp` FROM `clients` WHERE `email`="myemail@gmail.com" AND `password`= "1234"'; // Check if there are results if ($result = mysqli_query($con, $sql)) {   // If so, then create a results array and a temporary one   // to hold the data   $resultArray = array();   $tempArray = array();     // Loop through each row in the result set   while($row = $result->fetch_object())   {     // Add each row into our results array     $tempArray = $row;     array_push($resultArray, $tempArray);   }     // Finally, encode the array to JSON and output the results   echo json_encode($resultArray); }   // Close connections mysqli_close($con); ?> i get in my swift log : [{"email":"myemail@gmail.com","password":"1234"}] but i get nothing when my request SQL take the post here is my swiftcode : import UIKit import Alamofire class ViewController: UIViewController {       @IBOutlet weak var idTextField: UITextField!   @IBOutlet weak var passwordTextField:UITextField!       @IBAction func forgotPasswordButton(_ sender: UIButton) {   }       @IBAction func loginButton(_ sender: UIButton) {           var id:NSString = idTextField.text! as NSString     var password:NSString = passwordTextField.text! as NSString     var urlLink = "http://domain.com/myPHP.php"           if(id.isEqual(to:"") || password.isEqual(to: "")){       print("id ou mdp vide")       let alert = UIAlertController(title: "", message: "identifiant ou mot de passe incorrecte", preferredStyle: .alert)       alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { action in         switch action.style {         case .default:           print("default")         case .cancel:           print("cancel")         case .destructive:           print("destructive")         @unknown default:           fatalError()         }       }))       self.present(alert, animated: true, completion: nil)     }else{       print("reussite")               let parameters = ["id":"\(id)","password":"\(password)"]               var sParams = ""               for (key,value) in parameters{        //http://domain.com/Appli/myPHP.php ? parameter1Key = parameter1Value & parameter2Key = parameter2Value         sParams += key + "=" + (value as String) + "&"         print("\(key),\(value as String)")       }       if !sParams.isEmpty{         sParams = "?" + sParams                  if sParams.hasSuffix("&"){           sParams.removeLast()                    }                   urlLink = urlLink + sParams       }else{         print("!sParams.isEmpty fail")       }       let serializer = DataResponseSerializer(emptyResponseCodes: [200,204,205])               var request = URLRequest(url : URL(string:urlLink)!)       AF.request(request).uploadProgress{progress in }.response(responseSerializer: serializer){ response in         if response.error == nil {           var responseString: String!                       responseString = ""                       if response.data != nil {             responseString = String(bytes:response.data!, encoding: .utf8)                                     }else{             responseString = response.response?.description                       }                       print(responseString ?? "")           print(response.response?.statusCode as Any)           var data : NSData!                       if let data = data {             //Succeed             let dataLength = data.length             print("Size: \(dataLength) Bytes")           }else{             //print(data)           }                                print("response time: \(response.metrics?.taskInterval.duration ?? 0)")         }       }             }   }       @IBAction func signInButton(_ sender: UIButton) {   }           override func viewDidLoad() {           super.viewDidLoad()     // Do any additional setup after loading the view.   }     }

Hello, I have a problem when I launch the application I have this error displayed in the log of the swift: Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not have any content around line 2, column 0." UserInfo={NSDebugDescription=JSON text did not have any content around line 2, column 0., NSJSONSerializationErrorIndex=1} here is the php : <?php $hote="myHost"; $login="myLogin"; $mdp="myPassword"; $nomdb="nameDB"; // Create connection $con= mysqli_connect($hote,$login,$mdp,$nomdb); $con->set_charset("utf8mb4"); // Check connection if (mysqli_connect_errno()) {  echo "Failed to connect to MySQL: " . mysqli_connect_error(); } // This SQL statement selects ALL from the table 'Locations' $sql = "SELECT `id`,`nom`,`prenom`,`tel`,`email`,`mdp`,`adr`,`cp`,`ville` FROM clients";   // Check if there are results if ($result = mysqli_query($con, $sql)) {   // If so, then create a results array and a temporary one   // to hold the data       $resultArray = array();   $tempArray = array();     // Loop through each row in the result set   while($row = $result->fetch_object())   {     // Add each row into our results array     $tempArray = $row;     array_push($resultArray, $tempArray);   }     // Finally, encode the array to JSON and output the results   echo utf8_encode($resultArray); }   // Close connections mysqli_close($con); ?> With some research I know that this error is due to a json data received from the server (I don't know the exact term sorry) but unfortunately finding the error and solving it are two different things could help me to solve it ?

so i start to make an app and i try so I started an application that allows to make a connection to a database. and i have also 2 signal SIGABRT error i put where the error spawn in my code. I met some errors and unfortunately I don't know how to fix it here is the log: 2022-11-08 18:27:45.563127+0100 test[19072:332743] [SceneConfiguration] Info.plist configuration "Default Configuration" for UIWindowSceneSessionRoleApplication contained UISceneClassName key, but could not load class with name "". 2022-11-08 18:27:45.563460+0100 test[19072:332743] [SceneConfiguration] Info.plist configuration "(no name)" for UIWindowSceneSessionRoleApplication contained UISceneClassName key, but could not load class with name "". 2022-11-08 18:27:45.564063+0100 test[19072:332743] [SceneConfiguration] Info.plist configuration "Default Configuration" for UIWindowSceneSessionRoleApplication contained UISceneClassName key, but could not load class with name "". Could not cast value of type 'NSNull' (0x1b7cc9a28) to 'NSString' (0x1b7cc7ec8). 2022-11-08 18:27:45.631625+0100 test[19072:332954] Could not cast value of type 'NSNull' (0x1b7cc9a28) to 'NSString' (0x1b7cc7ec8). Could not cast value of type 'NSNull' (0x1b7cc9a28) to 'NSString' (0x1b7cc7ec8). CoreSimulator 857.13 - Device: iPhone 14 Pro (6E6732CE-5770-4803-96B8-07D2C8BBAF0E) - Runtime: iOS 16.1 (20B72) - DeviceType: iPhone 14 Pro here is my homeModel : import Foundation import UIKit protocol HomeModelDelegate {       func itemsDowloaded(client:[Client] )     } class HomeModel : NSObject {       var delegate:HomeModelDelegate?       func getItems(){     //Hit the conn url     let serviceURL = "http://localhost/service.php"     //Download the JSON Data     let url = URL(string: serviceURL)           if let url = url {               // Create a URL Session       let session = URLSession(configuration: .default)               let task = session.dataTask(with: url) { (data, url, error) in                   if error == nil {           //Succed                       //call the parseJson //signal SIGABRT           self.parseJson(data!)         }else{           //error         }       }       // Start the task       task.resume()     }     //notify the view controller and pass the data back         }       func parseJson(_ data:Data){           var clientArray = [Client] //() can't put () because error on the post     do {       //Parse the data into Client object       let jsonArray = try JSONSerialization.jsonObject(with: data, options: []) as! [Any]               //loop through each result in the json array       for jsonResult in jsonArray {                   //Cast json result as a dictionary //signal SIGABRT         let jsonDict = jsonResult as! [String:String]         //Create a new client and set properties         let cli = Client(id:jsonDict["id"]!,                  lastName: jsonDict["nom"]!,                  firstName: jsonDict["prenom"]!,                  email: jsonDict["email"]!,                  mdp: jsonDict["mdp"]!)                           clientArray.append(cli)       }               // Pass the client array back to delegation       delegate?.itemsDowloaded(client: clientArray)     }     catch{       print("error parseJson")     }   } }