I am trying to get previews to work with swiftUI and my issue is Library not loaded: /System/Library/Frameworks/AddressBook.framework/AddressBook and it just loops my previews continually. I am using an older version of Xcode it is 13.1 but it is one of the latest ones my os supports. What can I do to fix this issue?

So I have an app and it relies on Core Data to save and load favourite players. The issue I have is the data being loaded in my viewwillappear method is the max number of all the players regardless whether or not I save the data. When I access my favouritesVC I can't go back and add more players because they take up the max amount of storage. I need my app to retrieve the favourites I saved not all the players. class FavouritesVC {    //this is a button I save my favourite players   //the print statements are accurate   @IBAction func save(_ sender: UIBarButtonItem) {     let entity = NSEntityDescription.entity(forEntityName: "CurrentPlayers", in: context)!     let saveFav = CurrentPlayers(entity: entity, insertInto: context)     for o in prefArr {       saveFav.yahooName = o.yahooName       saveFav.team = o.team       saveFav.position = o.position       saveFav.photoUrl = o.photoUrl     do {       try context.save()       print("These are my saved objects: \(saveFav)")       print("how many saved objects: \(prefArr.count)")     } catch {       print("error is: \(error)")     }     }   } } //what I use to load the data    override func viewWillAppear(_ animated: Bool) {     super.viewWillAppear(animated)     let fetchRequest = NSFetchRequest<CurrentPlayers>(entityName: "CurrentPlayers")     do {       prefArr = try context.fetch(fetchRequest)       for p in prefArr {         if p.yahooName == "Jordan *****" {           print("Jordan added")         }       }       print("There are this many saved favourites \(prefArr.count)")     } catch let error {       print("Could not fetch. \(error)")     }   } } //core data class file import Foundation import CoreData enum DecoderConfigurationError: Error {   case missingManagedObjectContext } extension CodingUserInfoKey {   static let managedObjectContext = CodingUserInfoKey(rawValue: "managedObjectContext")! } @objc(CurrentPlayers) public class CurrentPlayers: NSManagedObject, Decodable {       enum CodingKeys: String, CodingKey {       case photoUrl = "PhotoUrl"       case firstName = "FirstName"       case lastName = "LastName"       case position = "Position"       case team = "Team"       case yahooName = "YahooName"       case status = "Status"       case jerseyNumber = "Jersey"     }          public static var managedObjectContext: NSManagedObjectContext?          required public convenience init(from decoder: Decoder) throws {       guard let context = decoder.userInfo[.managedObjectContext] as? NSManagedObjectContext else {         throw DecoderConfigurationError.missingManagedObjectContext       }             self.init(context: context)       //...      let values = try decoder.container(keyedBy: CodingKeys.self)      photoUrl = try values.decode(String.self, forKey: CodingKeys.photoUrl)      firstName = try values.decode(String.self, forKey: CodingKeys.firstName)      lastName = try values.decode(String.self, forKey: CodingKeys.lastName)      position = try values.decode(String.self, forKey: CodingKeys.position)      team = try values.decode(String.self, forKey: CodingKeys.team)      yahooName = try values.decodeIfPresent(String.self, forKey: CodingKeys.yahooName)      status = try values.decode(String.self, forKey: CodingKeys.status)      jerseyNumber = try values.decodeIfPresent(Int64.self, forKey: CodingKeys.jerseyNumber) ?? 0     } }

I have an issue fetching objects from Core Data in my favourites section. I can save it with a button but I can not seem to retrieve the objects when I restart the app. I get it to print over 40000 (I have no idea why) and I see no favourites in my favourites section when I added them before.    override func viewDidLoad() {     super.viewDidLoad()     if currentFav == nil {     //display nil     fetchSave()     self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none     } else {     NotificationCenter.default.post(name: .passFavNotification,     object: self.currentFav)     DispatchQueue.main.asyncAfter(deadline: .now() + 300) {         self.reviewRating.requestReview(isWrittenReview: false)       }     }   } //trying to get this function to retrieve my objects in the persistent store    func fetchSave() {     let fetchRequest: NSFetchRequest<CurrentPlayers>     fetchRequest = CurrentPlayers.fetchRequest()     do {       let objects = try context.fetch(fetchRequest)       //I get over 40000 objects       print("These are how many saved favourites I have: \(objects.count)")       tableView.reloadData()     } catch {       print("Fetch failed")     }    }       @IBAction func save(_ sender: UIBarButtonItem) {     let saveFav = CurrentPlayers(context: context)     // Assign values to the entity's properties     for o in prefArr {     saveFav.yahooName = o.yahooName     saveFav.team = o.team     saveFav.position = o.position     saveFav.photoUrl = o.photoUrl     print("These are my saved objects: \(saveFav)")     // To save the new entity to the persistent store, call     // save on the context     }     do {       try context.save()     } catch {       print(error)     }   }

I have delete functionality in my app for favourites but when I delete a row but add another a favourite that row I just deleted is just added back to the top (gotta make sure that does not happen). I think this has to do with the notification. class FavouriteManager {           static let shared = FavouriteManager()     //it's an array now   var favArr : [CurrentPlayers] = []       var noRepFav : [CurrentPlayers] = []           func add(_ player: CurrentPlayers) {     favArr.append(player)     for player in favArr {       if !noRepFav.contains(player) {         noRepFav.append(player)       }     }     NotificationCenter.default.post(       name: .passFavNotification,       object: player     )   } } class FavouritesVC: UITableViewController {    var prefArr: Array<CurrentPlayers> {     get { FavouriteManager.shared.noRepFav }     set { FavouriteManager.shared.noRepFav = newValue }   }    @objc     func handleFavNotification(notification: Notification) {       tableView.reloadData()     }    //delete function    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {   if editingStyle == .delete {     tableView.beginUpdates()     prefArr.remove(at: indexPath.row)     tableView.deleteRows(at: [indexPath], with: .fade)     tableView.endUpdates()    }    } }

I'm trying to add delete functionality to my app and I am wondering how I can fix this error Cannot use mutating member on immutable value: 'favSet' is a get-only property. class FavouriteManager {           static let shared = FavouriteManager()       var favSet: OrderedSet<CurrentPlayers> = OrderedSet()       func add(_ player: CurrentPlayers) {     favSet.append(player)     NotificationCenter.default.post(       name: .passFavNotification,       object: player     )   } }    var favSet: OrderedSet<CurrentPlayers> {     FavouriteManager.shared.favSet   } //delete function    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {     if editingStyle == .delete {       tableView.beginUpdates()       favSet.remove(at: favSet.index(favSet.startIndex, offsetBy: indexPath.row)) //this is where the error is       tableView.deleteRows(at: [indexPath], with: .fade)       tableView.endUpdates()     }   }

I am trying to have my favourites persist when the app gets terminated and relaunches using Core Data. I made a save button to do just that but it does not seem to save the data in the way I intended and I lose the data when the app relaunches I don't get an error message. Any help is appreciated. //this is my class for my favourites import CoreData enum DecoderConfigurationError: Error {   case missingManagedObjectContext } extension CodingUserInfoKey {   static let managedObjectContext = CodingUserInfoKey(rawValue: "managedObjectContext")! } @objc(CurrentPlayers) public class CurrentPlayers: NSManagedObject, Decodable {       enum CodingKeys: String, CodingKey {       case photoUrl = "PhotoUrl"       case firstName = "FirstName"       case lastName = "LastName"       case position = "Position"       case team = "Team"       case yahooName = "YahooName"       case status = "Status"       case jerseyNumber = "Jersey"     }          public static var managedObjectContext: NSManagedObjectContext?          required public convenience init(from decoder: Decoder) throws {       guard let context = decoder.userInfo[.managedObjectContext] as? NSManagedObjectContext else {         throw DecoderConfigurationError.missingManagedObjectContext       }             self.init(context: context)       //...      let values = try decoder.container(keyedBy: CodingKeys.self)      photoUrl = try values.decode(String.self, forKey: CodingKeys.photoUrl)      firstName = try values.decode(String.self, forKey: CodingKeys.firstName)      lastName = try values.decode(String.self, forKey: CodingKeys.lastName)      position = try values.decode(String.self, forKey: CodingKeys.position)      team = try values.decode(String.self, forKey: CodingKeys.team)      yahooName = try values.decodeIfPresent(String.self, forKey: CodingKeys.yahooName)      status = try values.decode(String.self, forKey: CodingKeys.status)      jerseyNumber = try values.decodeIfPresent(Int64.self, forKey: CodingKeys.jerseyNumber) ?? 0     } } //this is the class that has access to the saveContext class PersistenceService {       private init() {}           static var context: NSManagedObjectContext {       return persistentContainer.viewContext     } // MARK: CoreData static var persistentContainer: NSPersistentContainer = {   /*    The persistent container for the application. This implementation    creates and returns a container, having loaded the store for the    application to it. This property is optional since there are legitimate    error conditions that could cause the creation of the store to fail.   */   let container = NSPersistentContainer(name: "playerModel")   container.loadPersistentStores(completionHandler: { (storeDescription, error) in     if let error = error as NSError? {       // Replace this implementation with code to handle the error appropriately.       // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.               /*        Typical reasons for an error here include:        * The parent directory does not exist, cannot be created, or disallows writing.        * The persistent store is not accessible, due to permissions or data protection when the device is locked.        * The device is out of space.        * The store could not be migrated to the current model version.        Check the error message to determine what the actual problem was.        */       fatalError("Unresolved error \(error), \(error.userInfo)")     }   })   return container }() static func saveContext () {   let context = persistentContainer.viewContext   if context.hasChanges {     do {       try context.save()     } catch {       // Replace this implementation with code to handle the error appropriately.       // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.       let nserror = error as NSError       fatalError("Unresolved error \(nserror), \(nserror.userInfo)")     }   } } }    //this is my save button function   @IBAction func saveFav(_ sender: UIBarButtonItem) {     print("saved button pressed")     let saveFav = CurrentPlayers(context: context)     for o in favSet {     saveFav.yahooName = o.yahooName     saveFav.team = o.team     saveFav.position = o.position     saveFav.photoUrl = o.photoUrl     }     PersistenceService.saveContext()   }

I am not sure how to transfer data a name from a button in my UITableViewCell to a UIViewController. I have a prepare function but it doesn't work gives me an unrecognized selector error. Is there a way to use it for this instance? func prepare(for segue: UIStoryboardSegue, sender: Any?) {     if segue.identifier == "hs" {     let destinationController = segue.destination as! HighlightsVC       destinationController.playerName = (item.yahooName!)   }   }

I have an alert that I want to go to a specific site but after the user presses okay and for it to show only once. I can't figure out the part where the site is delayed because the user did not press okay. var justOnce: Bool = true    @IBAction func playStats(_ sender: Any) {     //show alert only once     if justOnce {     let alert = UIAlertController(title: "Stats Important", message: "You can copy and paste the name here when you see the searchbar", preferredStyle: .alert)     alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))     self.present(alert, animated: true, completion: nil)     justOnce = false gotoSite()     }   }

I have an issue where the emulator behaves differently then the actual iPhone when running my Xcode app, (it has nothing to do with email). What could be the issue?

I have an issue with my SearchBar with scope working on my emulator but not on my iPhone properly. When I type the name of a specific player the iPhone shows me duplicates of the player but my emulator does not. What causes this issue? (I made the scoped bar programmatically but I don't see how that could cause an issue).

I'm trying to filter my players using searchBar with scope in a collectionview using a switch statement and my case 0 works but the issue is my other cases I can type into the searchBar but I can't seem to filter (nothing shows up) nor can I delete all the characters when I type. I have 2 arrays my cPlayerArr is my original array when data is recieved and my allTextArr is my filtered array when any kind of filtering is done.    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {     allTextArr = cPlayerArr.filter({ player - Bool in       switch searchBar.selectedScopeButtonIndex {       case 0:         if searchText.isEmpty {           fetchAllPlayers()         } else {         return           player.yahooName!.lowercased().contains(searchText.lowercased())         }       case 1:         if searchText.isEmpty {           fetchForwards()         } else {           print(searchText)           return player.yahooName!.lowercased().contains(searchText.lowercased()) &amp;&amp; player.position == "C" &amp;&amp;             player.position == "RW" &amp;&amp; player.position == "LW"         }       case 2:         if searchText.isEmpty {           fetchDefense()         } else {           return player.yahooName!.lowercased().contains(searchText.lowercased()) &amp;&amp; player.position == "D"         }       case 3:         if searchText.isEmpty {           fetchGoalies()         } else {           return player.yahooName!.lowercased().contains(searchText.lowercased()) &amp;&amp; player.position == "G"         }       default:         return false       }       return true     })     collections.reloadData()   }    func searchBar(_ searchBar: UISearchBar, selectedScopeButtonIndexDidChange: Int) {     if (searchBar.selectedScopeButtonIndex == 0) {       cPlayerArr.removeAll()       allTextArr.removeAll()       fetchAllPlayers()     } else if (searchBar.selectedScopeButtonIndex == 1) {       allTextArr.removeAll()       fetchForwards()     } else if (searchBar.selectedScopeButtonIndex == 2) {       allTextArr.removeAll()       fetchDefense()     } else {       allTextArr.removeAll()       fetchGoalies()     }   }    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) - Int {     if (searchBar.text != "" || searchBar.selectedScopeButtonIndex 0) {       return allTextArr.count     } else {       return cPlayerArr.count     }   }

I'm trying to figure out how to add a searchbar and a scope as a header to my UIViewController. The issue is I don't know the code to add it as a header.    func customizeSearch() {     let searchBar = UISearchBar(frame: CGRect(x:0, y:0, width: (UIScreen.main.bounds.width), height: 70))     searchBar.backgroundColor = UIColor.black     searchBar.delegate = self     searchBar.scopeButtonTitles = ["All", "Forwards", "Defensemen", "Goalies"]     //self.tableView.tableHeaderView = searchBar if I had a tableview, I have a vc.   }

I'm trying to use CoreData to save my favourites so that they will be accessed when the program terminates but I am not sure how to make my object persistent to do that.    @IBAction func addToFav(_ sender: Any) {         let alert = UIAlertController(title: "Favourite Added 💙", message: "\(name.text ?? "") is added to favourites", preferredStyle: .alert)         alert.addAction(UIAlertAction(           title: "OK",           style: UIAlertAction.Style.default)           { _ in         if let favPlayer = self.item /*this needs to be persistent*/ {             FavouriteManager.shared.add(favPlayer)             PersistenceService.saveContext()              }           })         self.present(alert, animated: true, completion: nil)         print("Favourite button Pressed")       } I have a PersistenceService class I can more easily access my CoreData values. class PersistenceService {       private init() {}           static var context: NSManagedObjectContext {       return persistentContainer.viewContext     } // MARK: CoreData static var persistentContainer: NSPersistentContainer = {   let container = NSPersistentContainer(name: "playerModel")   container.loadPersistentStores(completionHandler: { (storeDescription, error) in     if let error = error as NSError? {       // Replace this implementation with code to handle the error appropriately.       // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.               fatalError("Unresolved error \(error), \(error.userInfo)")     }   })   return container }() static func saveContext () {   let context = persistentContainer.viewContext   if context.hasChanges {     do {       try context.save()     } catch {       // Replace this implementation with code to handle the error appropriately.       // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.       let nserror = error as NSError       fatalError("Unresolved error \(nserror), \(nserror.userInfo)")     }   } } }

I'm trying to pass data forward from my HdVC to my FaVC with Notification Center using a button called addToFav and it does not seem to pass my data I call var item. I need a little help figuring it out a way to modify the code so my item can be passed and set to a variable currentFav I have in my FaVC. HdVC class HockeyDetailVC: UITableViewController {       let imageController = FetchImage()       var item: CurrentPlayers? /* This object value I want in FaVC */ override func viewDidLoad() {     super.viewDidLoad()     NotificationCenter.default.addObserver(self,     selector: #selector(handleFavNotification(notification:)),     name: .passFavNotification,     object: nil)   }       @objc func handleFavNotification(notification:Notification){       if let theFav = notification.object as? CurrentPlayers {         self.item = theFav       }     }      @IBAction func addToFav(_ sender: Any) {     let alert = UIAlertController(title: "Favourite Added 💙", message: "\(name.text ?? "") is added to favourites", preferredStyle: .alert)     alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))     self.present(alert, animated: true, completion: nil)     print("Favourite button Pressed")     let passDataVC = FavouritesVC() /* I think passDataVC is supposed to be different because I use storyboard but I don't know what else it's supposed to be. */     self.present(passDataVC, animated: true, completion:nil)     } FaVC class FavouritesVC: UITableViewController {       var currentFav: CurrentPlayers? /*this is the variable I want to set my item too. */       var favArr = [CurrentPlayers]()  override func viewDidLoad() {     super.viewDidLoad()     if currentFav == nil {     self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none     } else {     NotificationCenter.default.post(name: .passFavNotification,     object: self.currentFav)     favArr.append(currentFav!)     print(currentFav!)     }   }    

I'm trying to pass data forward and I am using storyboard but I can't use a segue because it will dismiss my initial view controller. What technique should I do to pass it forward without pushing my initial viewcontroller? I tried using storyboardID to initialize the destination viewcontroller but that does not work either.