I'm runnning Xcode 12.4 & am using Core Data and when I launch a device simulator they only show a black screen. ApDelegate.swift import UIKit import CoreData @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate { var window: UIWindow? internal func application( application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) - Bool { return true }   func applicationWillTerminate( application: UIApplication) { self.saveContext() } // MARK: UISceneSession Lifecycle func application( application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) - UISceneConfiguration {     return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role) } func application( application: UIApplication, didDiscardSceneSessions sceneSessions: SetUISceneSession) { } // MARK: - Core Data stack lazy var persistentContainer: NSPersistentContainer = { let container = NSPersistentContainer(name: "DataModel") container.loadPersistentStores(completionHandler: { (storeDescription, error) in             if let error = error as NSError? { fatalError("Unresolved error \(error), \(error.userInfo)") } }) return container }()     // MARK: - Core Data Saving support func saveContext () { let context = persistentContainer.viewContext if context.hasChanges { do { try context.save() } catch { let nserror = error as NSError fatalError("Unresolved error \(nserror), \(nserror.userInfo)") } } } } ViewController import UIKit import CoreData class TodoListViewController: UITableViewController {      var itemArray = [Item]() let dataFilePath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("Items.plist")     let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext     override func viewDidLoad() { super.viewDidLoad() //        loadItems() } // MARK: - Tableview Datasource Methods override func tableView( tableView: UITableView, numberOfRowsInSection section: Int) - Int { return itemArray.count } override func tableView( tableView: UITableView, cellForRowAt indexPath: IndexPath) - UITableViewCell { let cell = tableView.dequeueReusableCell(withIdentifier: "ToDoItemCell", for: indexPath) let item = itemArray[indexPath.row] cell.textLabel?.text = item.title // Ternary Operater == cell.accessoryType = item.done ? .checkmark : .none return cell } // MARK: - Tableview Delegate Methods override func tableView( tableView: UITableView, didSelectRowAt indexPath: IndexPath) { itemArray[indexPath.row].done = !itemArray[indexPath.row].done saveItems() tableView.reloadData() tableView.deselectRow(at: indexPath, animated: true) } //MARK: - Add New Items     @IBAction func addButtonPressed( sender: UIBarButtonItem) { var textField = UITextField() let alert = UIAlertController(title: "Add New Todoey Item", message: "", preferredStyle: .alert)   let action = UIAlertAction(title: "Add Item", style: .default) { (action) in let newItem = Item(context: self.context) newItem.title = textField.text! newItem.done = false self.itemArray.append(newItem) self.saveItems() self.tableView.reloadData() } alert.addTextField { (alertTextField) in alertTextField.placeholder = "Create new item" textField = alertTextField } alert.addAction(action) present(alert, animated: true, completion: nil) } //MARK: - Model Manupulation Methods func saveItems(){             do {                 try context.save()             } catch {                  print("Error while saving the context \(error)")             }     }           //    func loadItems() { //        if let data = try? Data(contentsOf: dataFilePath!) { //            let decoder = PropertyListDecoder() //            do { //                itemArray = try decoder.decode([Item].self, from: data) //            } catch { //                print("Error decoding Item Array \(error)") //            } //        } // //    } }

I just started a new project on Xcode 12 with Apple M1 Chip. I did run into issues when I was installing the pods but I was able to fix them using sudo arch -x86_64 gem install ffi then arch -x86_64 pod install. Now, the issue that I am facing is when I added the Alamofire pod for Api Networking. I got an error that said Cannot find type 'apirequests', 'RequestType' in scope and Cannot find type 'ServiceStatusCode' in scope. <------------------------BaseRequest .swift------------------------> BaseRequest.swift <-----------------------------------------------------------------> <------------------------BaseResponse .swift------------------------> BaseResponse.swift <----------------------------------------------------------------------->

Hi I have a requirement where I need to show date in uiactionsheet my IBOutlet Here I call function when I tapped on date field and this is a function Error error on this Line

Upload Image Button @IBAction func uploadImageAction(_ sender: UIButton) {         let picker = UIImagePickerController()         picker.sourceType = .photoLibrary         picker.delegate = self         picker.allowsEditing = true         picker.modalPresentationStyle = .fullScreen         present(picker, animated: true)     } Delegate Functions extension SignUpViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {          func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]){                           picker.dismiss(animated: true, completion: nil)         guard let image = info[UIImagePickerController.InfoKey.editedImage] as? UIImage else {             return         }                  guard let imageData = image.pngData() else {             return         }                           storage.child("images/file.png").putData(imageData, metadata: nil) { _, error in             guard error == nil else {                 print("Failed to upload")                 return             }             self.storage.child("images/file.png").downloadURL { url, error in                 guard let url = url, error == nil else{                     return                 }                 let urlString = url.absoluteString                 print("Download URL :- \(urlString)")                              }         }              }          func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {         picker.dismiss(animated: true, completion: nil)                  func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {             // Solve the problem that the cancel button is not sensitive when selecting photos after iOS 11             if (UIDevice.current.systemVersion as NSString).floatValue < 11.0 {                 return             }             if (viewController.isKind(of: NSClassFromString("UIImagePickerController")!)){                 for (index,obj) in viewController.view.subviews.enumerated() {                     if obj.frame.size.width < 42 {                         viewController.view.sendSubviewToBack(obj)                     }                 }             }         }     }      }

Am getting my data in AssetList Variable in ModelView File But in View File getting nil ** Model View File ** In this file I have data in AssetList * import SwiftUI class FloatingPanelViewModel: ObservableObject { typealias HomeAPICallback = (Bool,String) -> Void var completion : HomeAPICallback? // var arrayCategoryModel = pListManager.shared.homeOptionsItems var AssetsList = [Asset]() func getAssets(completion: @escaping HomeAPICallback) { self.completion = completion AssetsRequest.shared.getAssetsList(delegate: self) } } extension FloatingPanelViewModel:ServiceRequestDelegate { func successWithdata(response: BaseResponse) { if response.isSuccess { if response.requestType == APIRequests.RType_GetAssets { if let responseData = response.serverData as? [String:AnyObject] { do { AssetsList.removeAll() print(responseData) if let AssetData = responseData["assets"] as? [AnyObject] { let jsonData = try JSONSerialization.data(withJSONObject: AssetData, options: .prettyPrinted) AssetsList = try JSONDecoder().decode([Asset].self, from: jsonData) // for i in AssetsList { // print(i) // } } completion?(true,"") } catch { failureWithdata(response: response) } } } } else { failureWithdata(response: response) } } func failureWithdata(response: BaseResponse) { completion?(false,response.message) } } ** but in view getting nil ** in this file am getting nil after assigning viewModel.AssetsList to Assets * import SwiftUI struct FloatingPanelContent: View { // MARK: - PROPERTIES @ObservedObject var viewModel = FloatingPanelViewModel() @State var Assets: [Asset] = [] init() { viewModel.getAssets { (status, message) in print(status) print(message) } self.Assets = viewModel.AssetsList } // MARK: - BODY var body: some View { ScrollView(.vertical, showsIndicators: false){ VStack(alignment: .center, spacing: 10){ ForEach(viewModel.AssetsList) { asset in // print(asset) AssetsView(asset: asset) .cornerRadius(12) } //: LOOP } } // Scroll View } [Assets Variable print in View File ][1] ScreenShot of Printing AssetsList Variable in ViewModel* ScreenShot of Printing Assets Variable in View *

__am trying to print my values in table view but am getting double-double index.row value am returning devices.count in numberofrowsinsection function which is 22 but am getting ony 5 rows in cellforrowatindex function __ func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {         return self.devices?.count ?? 0;     }          func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {         print(devices?.count)         print("INDEXPATH :-----    \(indexPath.row)")         let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath);         if let device = self.devices?[indexPath.row]{             cell.textLabel?.text = device.name; //            print("\(count)   :-   Device :-    \(device)   Index:------\(indexPath.row)")             count += 1         }                  return cell;     }          func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {                  tableView.deselectRow(at: indexPath, animated: false);         if let block = self.deviceDidSelectBlock{             if let devices = self.devices, devices.count > 0 {                 let device = devices[indexPath.row]                 block(device);             }         }         self.dismiss(animated: false) {                      }     }          func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {         return 50;     }          func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {         let loc = touch.location(in: self.view);         if loc.x < self.deviceTable.frame.maxX && loc.x > self.deviceTable.frame.minX && loc.y < self.deviceTable.frame.maxY && loc.y > self.deviceTable.frame.minY{             return false;         }else{             return true;         }     }

I am using a custom cell in my tableView but when I run i get the error which I have mentioned in my question. override func viewDidLoad() { super.viewDidLoad()         alertTable.register(UINib(nibName: "Alert1TableViewCell", bundle: nil), forCellReuseIdentifier: "Alert1TableViewCell") } extension AlertViewController: UITableViewDelegate, UITableViewDataSource{     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {         return self.alerts?.count ?? 0;     }     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { //        let cell = alertTable.dequeueReusableCell(withIdentifier: "Alert1TableViewCell")! //        let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! Alert1TableViewCell;         let cell = tableView.dequeueReusableCell(withIdentifier: "Alert1TableViewCell", for: indexPath) as! Alert1TableViewCell         cell.alert = self.alerts?[indexPath.row];         return cell;     }     func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {         tableView.deselectRow(at: indexPath, animated: false);     }     func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {         return UITableView.automaticDimension;     }     func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {         return 100;     } } class Alert1TableViewCell: UITableViewCell {          @IBOutlet weak var nameLabel: UILabel!     @IBOutlet weak var descriptionLabel: UILabel!     @IBOutlet weak var timeLabel: UILabel!     @IBOutlet weak var icon: UIImageView!               public var alert : Alert?{         didSet{                          self.nameLabel.text = self.alert?.deviceName;             if self.alert?.alertType?.lowercased() == "ignition on"{                 self.icon.image = UIImage(named: "alert_ignition_on");             }else if self.alert?.alertType?.lowercased() == "ignition off"{                 self.icon.image = UIImage(named: "alert_ignition_off");             }else if self.alert?.alertType?.lowercased() == "overspeed"{                 self.icon.image = UIImage(named: "alert_overspeed");             }else{                 self.icon.image = UIImage(named: "alert_default");             }             let twelevehrsformat = DateUtil.format(self.alert?.dtServer ?? "", fromFormat: "yyyy-MM-dd HH:mm:ss", toFormat: "dd-MMM-yyyy hh:mm:ss a", tf: false);             let twentyfourhrsformat = DateUtil.format(self.alert?.dtServer ?? "" , fromFormat: "yyyy-MM-dd HH:mm:ss", toFormat: "dd-MMM-yy HH:mm:ss a", tf: true)             if UserDefaults.standard.bool(forKey: "hrsFormat") == true {                 self.timeLabel.text = twentyfourhrsformat             } else {                 self.timeLabel.text = twelevehrsformat             }             self.descriptionLabel.text = self.alert?.address;             print(self.alert?.address ?? "")         }     }     override func awakeFromNib() {         super.awakeFromNib()         // Initialization code     }     override func setSelected(_ selected: Bool, animated: Bool) {         super.setSelected(selected, animated: animated)         // Configure the view for the selected state     }      }

I am creating a table that has a prototype cell with an image & 3 labels but is getting an address label nil on calling tableviewreload function but after scrolling, it shows the address My Tableview Code func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {                  var device: Device!         if self.searchOn{             device = searchResult[indexPath.row]         }else{             switch self.stage {             case 0:                 if devices?[indexPath.row].address == "" {                     print("\(devices?[indexPath.row].name ?? "") Address Blank :- \(devices?[indexPath.row].address ?? "")")                 }                 device = devices?[indexPath.row];                 break;             case 1:                 device = movingDevices[indexPath.row];                 break;             case 2:                 device = stoppedDevices[indexPath.row];                 break;             case 3:                 device = offlineDevices[indexPath.row];                 break;             default:                 break;             }         }                  if isDeviceExpired(device){             let cell = tableView.dequeueReusableCell(withIdentifier: "deviceRenewCell", for: indexPath) as! DeviceRenewCell;             cell.device = device             cell.renewBlock = { [weak self] device in                 if let vc = self?.storyboard?.instantiateViewController(withIdentifier: "DeviceRenewalViewController") as? DeviceRenewalViewController{                     vc.preSelectedDevice = device                     self?.navigationController?.pushViewController(vc, animated: true)                 }             }             return cell         }else{             let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! DeviceTableViewCell;             if device.address == "" {                 print("\(device.name ?? "") Address Blank :- \(device.address ?? "")")             }             cell.device = device             return cell         }              } My TableviewCell Code class DeviceTableViewCell: UITableViewCell {     public var device : Device?{         didSet{             self.nameLabel.text = self.device?.name;             self.statusLabel.text = self.device?.status;             let twelevehrsformat = DateUtil.format(self.device?.dtTracker ?? "", fromFormat: "yyyy-MM-dd HH:mm:ss", toFormat: "dd-MMM-yy hh:mm:ss a", tf: false)             let twentyfourhrsformat = DateUtil.format(self.device?.dtTracker ?? "", fromFormat: "yyyy-MM-dd HH:mm:ss", toFormat: "dd-MMM-yy HH:mm:ss", tf: true)             if UserDefaults.standard.bool(forKey: "hrsFormat") == true {                 self.timeLabel.text = twentyfourhrsformat             } else {                 self.timeLabel.text = twelevehrsformat             }             if self.device?.address == "" {                 print("\(self.device?.name) Address blank :- \(self.device?.address ?? "")")             } else {                 self.addressLabel.text = self.device?.address;             }                          self.speedLabel.text = self.device?.speed;             self.speedUnitLabel.text = self.device?.unitOfSpeed;             if let icon = self.device?.icon{                 self.vehicleImage.yy_setImage(with: URL(string: "\(Configuration.getBaseUrl())\(icon)"), options: [.ignoreFailedURL])             }             if let conn = self.device?.connectionImg{                 self.connectionImage.yy_setImage(with: URL(string: "\(Configuration.getBaseUrl())\(conn)"), options: [.ignoreFailedURL])             }             if let ig = self.device?.ignition{                 if ig == 1{                     self.stateImage.image = UIImage(named: "ignition_on");                 }else{                     self.stateImage.image = UIImage(named: "ignition_off");                 }             }else{                 self.stateImage.image = UIImage(named: "ignition_na");             }         }     }          @IBOutlet weak var nameLabel: UILabel!;     @IBOutlet weak var statusLabel: UILabel!;     @IBOutlet weak var timeLabel: UILabel!;     @IBOutlet weak var addressLabel: UILabel!;     @IBOutlet weak var speedLabel: UILabel!;     @IBOutlet weak var speedUnitLabel: UILabel!;     @IBOutlet weak var vehicleImage: UIImageView!;     @IBOutlet weak var connectionImage: UIImageView!;     @IBOutlet weak var stateImage: UIImageView!;     @IBOutlet weak var bed: UIView!;          override func awakeFromNib() {         super.awakeFromNib()         self.bed.layer.masksToBounds = true;         self.bed.layer.cornerRadius = 3.0;              }          override func setSelected(_ selected: Bool, animated: Bool) {         super.setSelected(selected, animated: animated)                  // Configure the view for the selected state     }      } **Before Scrolling ** **After Scrolling **

** Plist File ** <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CLIENT_ID</key> <string>836092823410-d76r5bkjrusfmgo6rskqo81l4mk7vmp4.apps.googleusercontent.com</string> <key>REVERSED_CLIENT_ID</key> <string>com.googleusercontent.apps.836092823410-d76r5bkjrusfmgo6rskqo81l4mk7vmp4</string> <key>API_KEY</key> <string>AIzaSyDpP1n_NRqj9c_Mq-pA2PlRez7AnVM5buw</string> <key>GCM_SENDER_ID</key> <string>836092823410</string> <key>PLIST_VERSION</key> <string>1</string> <key>BUNDLE_ID</key> <string>com.iai.tracker</string> <key>PROJECT_ID</key> <string>crucial-audio-334611</string> <key>STORAGE_BUCKET</key> <string>crucial-audio-334611.appspot.com</string> <key>IS_ADS_ENABLED</key> <false/> <key>IS_ANALYTICS_ENABLED</key> <false/> <key>IS_APPINVITE_ENABLED</key> <true/> <key>IS_GCM_ENABLED</key> <true/> <key>IS_SIGNIN_ENABLED</key> <true/> <key>GOOGLE_APP_ID</key> <string>1:836092823410:ios:0312dc35c45b23b9e37feb</string> </dict> </plist> Delegate File

Am trying to fetch FCM key from firebase but getting fcm key nil & error i mention above Delegate File Google Plist File <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CLIENT_ID</key> <string>836092823410-d76r5bkjrusfmgo6rskqo81l4mk7vmp4.apps.googleusercontent.com</string> <key>REVERSED_CLIENT_ID</key> <string>com.googleusercontent.apps.836092823410-d76r5bkjrusfmgo6rskqo81l4mk7vmp4</string> <key>API_KEY</key> <string>AIzaSyDpP1n_NRqj9c_Mq-pA2PlRez7AnVM5buw</string> <key>GCM_SENDER_ID</key> <string>836092823410</string> <key>PLIST_VERSION</key> <string>1</string> <key>BUNDLE_ID</key> <string>com.iai.tracker</string> <key>PROJECT_ID</key> <string>crucial-audio-334611</string> <key>STORAGE_BUCKET</key> <string>crucial-audio-334611.appspot.com</string> <key>IS_ADS_ENABLED</key> <false/> <key>IS_ANALYTICS_ENABLED</key> <false/> <key>IS_APPINVITE_ENABLED</key> <true/> <key>IS_GCM_ENABLED</key> <true/> <key>IS_SIGNIN_ENABLED</key> <true/> <key>GOOGLE_APP_ID</key> <string>1:836092823410:ios:0312dc35c45b23b9e37feb</string> </dict> </plist>

import UIKit import GoogleMaps class ReportLocationDetailViewController: UIViewController {     var event : ReportDetail?;          @IBOutlet weak var mapView: GMSMapView!;     @IBOutlet weak var zoomInBtn: UIButton!;     @IBOutlet weak var zoomOutBtn: UIButton!;          @IBAction func dismissAction(){         self.dismiss(animated: true) {                      }     }     @IBAction func zoomIn(){         self.mapView.animate(with: GMSCameraUpdate.zoomIn());     }          @IBAction func zoomOut(){         self.mapView.animate(with: GMSCameraUpdate.zoomOut());              }     func setUpUI(){         self.zoomInBtn.layer.cornerRadius = 2.0;         self.zoomInBtn.layer.masksToBounds = true;         self.zoomInBtn.layer.borderColor = UIColor.lightGray.cgColor;         self.zoomInBtn.layer.borderWidth = 1.0;         self.zoomInBtn.imageEdgeInsets = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5);                  self.zoomOutBtn.layer.cornerRadius = 2.0;         self.zoomOutBtn.layer.masksToBounds = true;         self.zoomOutBtn.layer.borderColor = UIColor.lightGray.cgColor;         self.zoomOutBtn.layer.borderWidth = 1.0;         self.zoomOutBtn.imageEdgeInsets = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5);     }          override func viewDidLayoutSubviews() {         super.viewDidLayoutSubviews();         self.setUpUI();     }          override func viewDidLoad() {         super.viewDidLoad()         UIView.appearance().semanticContentAttribute = .forceLeftToRight     }          override func viewDidAppear(_ animated: Bool) {         super.viewDidAppear(animated);         if let e = self.event, let lat = e.lat, let lon = e.lon{             let position = CLLocationCoordinate2D(latitude: lat, longitude: lon)             let marker = GMSMarker(position: position);             marker.snippet = e.address;             marker.title = e.name;             marker.groundAnchor = CGPoint(x: -6.5, y: -3.0);             marker.map = mapView;             self.mapView.selectedMarker = marker;             let update = GMSCameraUpdate.setTarget(position, zoom: 15)             self.mapView.animate(with: update);         }     } } Map view with correct position MapView After Zoom In MapView After Zoom Out

My app worked fine before adding the check notification allow function. and when i add that function, I got this weird crash that gave an error of 'Modifications to layout engine must not be performed from a background thread after it has been accessed from the main thread'. The code that pops up in debugging is this. Any thoughts? My Code import UIKit import GoogleMaps class HomeViewController: FHBaseViewController { var devices : [Device]? var firstLoad = true; let defaults = UserDefaults.standard; var icons: [String:UIImage] = [:]; @IBOutlet weak var movingView : UIView!; @IBOutlet weak var stoppedView : UIView!; @IBOutlet weak var inYardView : UIView!; @IBOutlet weak var offlineView : UIView!; @IBOutlet weak var statsView : UIView!; @IBOutlet weak var mapBed : UIView!; @IBOutlet weak var mapView : GMSMapView!; @IBOutlet weak var morningLabel : UILabel!; @IBOutlet weak var movingLabel : UILabel!; @IBOutlet weak var stoppedLabel : UILabel!; @IBOutlet weak var inYardLabel : UILabel!; @IBOutlet weak var offlineLabel : UILabel!; @IBOutlet weak var nameLabel : UILabel!; override func viewDidLoad() { super.viewDidLoad(); self.reloadData(); } override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated); self.tabBarController?.tabBar.isHidden = false; if firstLoad{ firstLoad = false; }else{ if UserService.userInfo != nil{ self.reloadData(); } } } override func connectionResume() { self.reloadData() } func checkNotificationAllowed(){ let data = defaults.object(forKey:"mute") as? Bool print(data!) if (data != nil) == true { let current = UNUserNotificationCenter.current() current.getNotificationSettings(completionHandler: { permission in switch permission.authorizationStatus { case .authorized: print("User granted permission for notification") case .denied: print("User denied notification permission") let alert = UIAlertController(title: "Turn On Notifications".localized(), message: "Notifications are disabled. Please turn on app notifications to get device alerts.".localized(), preferredStyle: .alert) alert.addAction(UIAlertAction(title: "Don't Allow".localized(), style: .cancel, handler: { action in self.dismiss(animated: true, completion: nil) })) alert.addAction(UIAlertAction(title: "Allow".localized(), style: .destructive, handler: { action in self.dismiss(animated: true, completion: nil) })) self.present(alert, animated: true, completion: nil) case .notDetermined: print("Notification permission haven't been asked yet") case .provisional: // @available(iOS 12.0, *) print("The application is authorized to post non-interruptive user notifications.") case .ephemeral: // @available(iOS 14.0, *) print("The application is temporarily authorized to post notifications. Only available to app clips.") @unknown default: print("Unknow Status") } }) } } func showLoginVC(){ UserService.clearUser(); UserService.clearLocalCacheUser(); self.firstLoad = true; if buildType == "GPSTracker" { let loginVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MarocLoginViewController") as! MarocLoginViewController; loginVC.successBlock = { (resp, password) in self.loginSuccess(resp, password: password); } loginVC.modalPresentationStyle = .fullScreen self.present(loginVC, animated: true, completion: {}); } else { let loginVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "LoginViewController") as! LoginViewController; loginVC.successBlock = { (resp, password) in self.loginSuccess(resp, password: password); } loginVC.modalPresentationStyle = .fullScreen self.present(loginVC, animated: true, completion: {}); } } func loginSuccess(_ resp: LoginResponse?, password: String){ if let un = resp?.userName, let name = resp?.name, let apiToken = resp?.apiToken{ let u = User(username: un, name: name, password: password, apiToken: apiToken, isActive: true, baseUrl: Configuration.getBaseUrl()); UserService.setUser(user: u); } self.reloadData(); } func reloadData(){ self.nameLabel.text = UserService.userInfo?.name; self.mapView.clear(); let update = GMSCameraUpdate.zoom(to: 1); self.mapView.moveCamera(update); self.showHud(); DashBoardService.getDashBoard { (resp) in self.hideHud(); if resp?.status == 1{ self.movingLabel.text = "\(resp?.summary?.moving ?? 0)"; self.stoppedLabel.text = "\(resp?.summary?.stopped ?? 0)"; self.inYardLabel.text = "\(resp?.summary?.inyard ?? 0)"; self.offlineLabel.text = "\(resp?.summary?.offline ?? 0)"; DispatchQueue.main.async { self.hideHud(); self.checkNotificationAllowed() } } } DeviceService.getDevice { (resp) in if resp?.status == 1{ self.devices = resp?.devices; self.reloadMap(); } } } }

I'm trying to add some text under marker like in the picture mentioned below,I'm using google maps, Swift I want to add some text under my marker. There is a way to do that? My Code self.mapView.clear(); var bounds = GMSCoordinateBounds(); if let lat = alert?.latitude, let lon = alert?.longitude{ let position = CLLocationCoordinate2D(latitude: lat, longitude: lon) let marker = GMSMarker(position: position); marker.title = alert?.deviceName; marker.groundAnchor = CGPoint(x: 0.5, y: 0.5); marker.map = mapView; bounds = bounds.includingCoordinate(position); } let update = GMSCameraUpdate.fit(bounds) self.mapView.animate(with: update);

Error:- Thread 1: "Unable to activate constraint with anchors <NSLayoutXAxisAnchor:0x280af8500 \"UILabel:0x103dc4fa0.centerX\"> and <NSLayoutXAxisAnchor:0x280af89c0 \"UIView:0x103dc49d0.centerX\"> because they have no common ancestor. Does the constraint or its anchors reference items in different view hierarchies? That's illegal." I've created a function programmatical in Base view controller which returns a view & I've added some constraints to its Function:- func getMarker (lbl:String, img:UIImage) -> UIView { let myView = UIView(frame: CGRect.zero) myView.center = CGPoint(x: 50, y: 160) myView.backgroundColor = UIColor.clear let imageView = UIImageView(image: img) imageView.frame = CGRect(x: 0, y: 0, width: 20, height: 40) myView.addSubview(imageView) let label = UILabel(frame: CGRect(x: 0, y: 45, width: 120, height: 30)) label.text = lbl label.textAlignment = .center label.adjustsFontSizeToFitWidth = true label.textColor = UIColor.black label.backgroundColor = UIColor.white label.layer.borderColor = UIColor.lightGray.cgColor label.layer.borderWidth = 0.5 label.layer.cornerRadius = 5 label.layer.masksToBounds = true label.sizeToFit() NSLayoutConstraint.activate([ label.centerXAnchor.constraint(equalTo: myView.centerXAnchor), imageView.centerXAnchor.constraint(equalTo: myView.centerXAnchor) ]) myView.addSubview(label) return myView } calling function in another controller but it crashing and showing me the error which I mentioned above Calling function:- getMarker(lbl: device.name ?? "", img: (UIImage(named: icfile) ?? UIImage(named: "truck_1_orange")!))