When tapped on search bar, the app crashes - swift

Question

The app crashes with the following error when the search bar is tapped:
Not able to understand why?
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier ContactCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'
This is my code:
import UIKit
class ContactViewController: UITableViewController, UISearchResultsUpdating {
var dataSource: [Contact] = []
var filteredResult = [Contact]()
let searchController = UISearchController(searchResultsController: nil)
override func viewDidLoad() {
super.viewDidLoad()
downloadJSONUrl()
}
func downloadJSONUrl() {
let urlString = "https://us-central1-practo-contacts-sample.cloudfunctions.net/get"
let url = NSURL(string: urlString)
URLSession.shared.dataTask(with: (url as URL?)!, completionHandler: {(data, response , error) -> Void in
if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? NSDictionary {
if let NameArray = jsonObj?.value(forKey: "contacts") as? [[String: Any]] {
for names in NameArray {
var cont = Contact()
if let name = names["name"] as? String {
cont.name = name
}
if let ph = names["number"] as? String {
cont.phoneNumber = ph
}
self.dataSource.append(cont)
}
self.dataSource.sort {$0.name.lowercased() < $1.name.lowercased()}
}
OperationQueue.main.addOperation {
self.tableView.reloadData()
}
}
}).resume()
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.dataSource.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ContactCell", for: indexPath) as UITableViewCell
let contact = self.dataSource[indexPath.row]
cell.textLabel?.text = contact.name
cell.detailTextLabel?.text = contact.phoneNumber
return cell
}
func updateSearchResults(for searchController: UISearchController) {
if searchController.searchBar.text! == "" {
filteredResult = dataSource
} else {
filteredResult = dataSource.filter { $0.name.lowercased().contains(searchController.searchBar.text!.lowercased()) }
}
self.tableView.reloadData()
}
#IBAction func unwindToContactList(segue: UIStoryboardSegue) {
guard let viewController = segue.source as? AddOrEditViewController else { return }
if let name = viewController.nameTextField.text, let phoneNumber = viewController.phoneNumberTextField.text {
let contact = Contact(name: name, phoneNumber: phoneNumber)
self.dataSource.append(contact)
tableView.reloadData()
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "contactDetailsSegue" {
guard let viewController = segue.destination as? ContactDetialsViewController else {
return
}
guard let indexPath = tableView.indexPathForSelectedRow else { return }
let contact = self.dataSource[indexPath.row]
viewController.contact = contact
}
}
}

Answer 1

Are you sure that you have set the identifier for the cell on the storyboard and the identifier name is the same used on the code "ContactCell"?