Notifications API fetched are not visible on other devices except the one used for testing for swift project . What is way out of such situation? – Ios swift

//
//  NotificationsTableViewController.swift

//

import UIKit
import PKHUD
import Alamofire
import EmptyDataSet_Swift

class NotificationsTableViewController: UITableViewController {
    
    var notifications: NotificationsResponse?
    var currentPage = 1
    var totalPage = 0
    
    var aryOfNotificationList = NSMutableArray()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        title = _appDelegate.getLocalize("kNotifications")
        
        //        tableView.emptyDataSetSource = self
        //        tableView.emptyDataSetDelegate = self
        
        tableView.tableFooterView = UIView()
        
        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false
        
        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        
        //self.getNotifications(page: "(currentPage)")
        self.fetchNotificationList(page: currentPage)
    }
    
    
    
    // MARK: - Table view data source
    
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.aryOfNotificationList.count
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "notificationCell", for: indexPath) as! NotificationTableViewCell
                
        let json = self.aryOfNotificationList.object(at: indexPath.row)as! NSDictionary

        if let str = json.value(forKey: "vTitle")as? String{
            cell.titleLable.text = str
        }
        if let str = json.value(forKey: "vText")as? String{
            cell.detailLable.text = str
        }
        if let str = json.value(forKey: "tCreatedAt")as? Int{
            cell.datLabel.text = getDate(unixdate: str, timezone: "UTC")
        }
     
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
        let json = self.aryOfNotificationList.object(at: indexPath.row)as! NSDictionary
        if let dic = json.value(forKey: "txParameters")as? NSDictionary{
            
            
            guard let bookId = dic.value(forKey: "iBookId")as? Int else {return}
            
            guard let bookName = json.value(forKey: "vTitle")as? String else {return}
            downloadBookAndSave(bookId: bookId,bookName:bookName)
        }
    }
    
}


extension NotificationsTableViewController: EmptyDataSetSource {
    func title(forEmptyDataSet scrollView: UIScrollView) -> NSAttributedString? {
        guard let font = UIFont(name: "NotoSansGujarati", size: 18) else {
            // do something with attributes
            return NSAttributedString(string: "Record not found.")
            
        }
        
        let attributes = [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: UIColor.secondaryColor]
        
        return NSAttributedString(string: "Record not found.", attributes: attributes)
    }
}

// MARK:- API
extension NotificationsTableViewController {
    
    func fetchNotificationList(page:Int){
        guard let urlEncodedString = (AppConstants.URL.getNotifications + "?pageno=(page)").addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) else {
            return
        }
        HUD.show(.progress)
        let url = URL(string: urlEncodedString)!
        print(url)
        
        var headers: HTTPHeaders = [
            "Content-Type"  : "application/x-www-form-urlencoded",
            "Accept"        : "application/json",
        ]
        
        if let accessToken = User.current?.accessToken {
            headers["Authorization"] = "Bearer (accessToken)"
        } else if let accessToken = UserDefaults.standard.string(forKey: "AccessToken") {
            headers["Authorization"] = "Bearer (accessToken)"
        }
        
        AF.request(urlEncodedString, method:.get, parameters:nil, headers: headers)
            .responseJSON { response in
                switch response.result {
                case .success(let value):
                    if let json = value as? NSDictionary{
                        print(json)
                        if let str = json.value(forKey: "totalRecord")as? Int{
                            self.totalPage = str
                        }
                        if let ary = json.value(forKey: "data")as? NSArray{
                            for j in ary{
                                self.aryOfNotificationList.add(j as! NSDictionary)
                            }
                        }
                    }
                    
                    if self.currentPage >= self.totalPage{
                        DispatchQueue.main.async {
                            HUD.hide()
                            self.tableView.delegate = self
                            self.tableView.dataSource = self
                            self.tableView.reloadData()
                        }
                    }else{
                        self.currentPage = self.currentPage + 1
                        self.fetchNotificationList(page: self.currentPage)
                    }
                    
                    
                case .failure(let error):
                    print(error.localizedDescription)
                    DispatchQueue.main.async {
                        HUD.hide()
                    }
                }
            }
    }
    
    func getBookService(bookId: Int) {
        guard let urlEncodedString = (AppConstants.URL.getBook + "?book_id=(bookId)").addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) else {
            return
        }
        HUD.show(.progress)
        let url = URL(string: urlEncodedString)!
        let task = URLSession.shared.dataTask(with: url) { [weak self] (data, response, error) in
            DispatchQueue.main.async {
                HUD.hide()
            }
            if let er = error {
                print(er)
                Utils.showAlertController(with: er.localizedDescription, viewController: self!)
                return
            }
            guard let unwrappedData = data else { return }
            do {
                //print(String(data: unwrappedData, encoding: .utf8))
                let getBooksResponse = try JSONDecoder().decode(GetBookResponse.self, from: unwrappedData)
                guard getBooksResponse.books.count != 0 else {
                    DispatchQueue.main.async {
                        Utils.showAlertController(with: "No book found.", viewController: self!)
                    }
                    return
                }
                DispatchQueue.main.async { [weak self] in
                    for book in getBooksResponse.books {
                        var bookJson =
                            """
                        "id": (book.bookId),
                        "title": (book.title),
                        "desc": (book.content)
                        """
                        _appDelegate.loadString(jsonString: &bookJson, type: .Book, langType: .Gujrati)
                    }
                    
                    Utils.showAlertController(with: "Book is saved", viewController: self!)
                    
                }
            } catch {
                print("json error: (error)")
            }
        }
        task.resume()
        
    }
    
    func getDate(unixdate: Int, timezone: String) -> String {
        let date = NSDate(timeIntervalSince1970: TimeInterval(unixdate))
        let dayTimePeriodFormatter = DateFormatter()
        dayTimePeriodFormatter.dateFormat = "dd/MM/YYYY"
        dayTimePeriodFormatter.timeZone = (NSTimeZone(name: timezone)! as TimeZone)
        let dateString = dayTimePeriodFormatter.string(from: date as Date)
        return "(dateString)"
    }
    
    
    func downloadBookAndSave(bookId: Int,bookName:String) {
        guard let urlEncodedString = (AppConstants.URL.getBook + "?book_id=(bookId)").addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) else {
            return
        }
        HUD.show(.progress)
        let url = URL(string: urlEncodedString)!
        let task = URLSession.shared.dataTask(with: url) { [weak self] (data, response, error) in
            DispatchQueue.main.async {
                HUD.hide()
            }
            if let er = error {
                print(er)
                Utils.showAlertController(with: er.localizedDescription, viewController: self!)
                return
            }
            guard let unwrappedData = data else { return }
            do {
                //print(String(data: unwrappedData, encoding: .utf8))
                guard let data = try? JSONSerialization.jsonObject(with: unwrappedData, options: []) as? [String:AnyObject]  else {
                    return
                }
                
                let getBooksResponse = try JSONDecoder().decode(GetBookResponse.self, from: unwrappedData)
                guard getBooksResponse.books.count != 0 else {
                    DispatchQueue.main.async {
                        Utils.showAlertController(with: "No book found.", viewController: self!)
                    }
                    return
                }
                DispatchQueue.main.async { [weak self] in
                    let book = getBooksResponse.books[0]
//                        var bookJson =
//                            """
//                        "id": (book.bookId),
//                        "title": (book.title),
//                        "desc": (book.content)
//                        """
                       // _appDelegate.loadString(jsonString: &bookJson, type: .Book, langType: .Gujrati)
                    do {
                        let data = try Data(book.content.utf8)
                        let parsedBookObject = try JSONDecoder().decode([BookContent].self, from: data) // <-- here
                        //print(parsedBookObject)
                        guard let bookModel:BookModelForJSONConversion? = BookModelForJSONConversion(id: book.bookId, title: book.title, content: parsedBookObject)else {return}
                        guard let bookJSONString = bookModel!.convertToJsonString()else {return}
                            let booksManager = VBBooksManager.init()
                        
                            booksManager.saveBook(bookName: book.title, bookData: bookJSONString)
                            Utils.showAlertController(with: "Book is saved", viewController: self!)
                    }
                    catch let error as NSError{
                        print("error: (error)")
                    }
                    
                    
                }
            } catch {
                print("json error: (error)")
            }
        }
        task.resume()
        
    }
}