Change the cell layout to use the other two styles. 2. Expand the settings screen to allow for specifying two sort fields. Then have the sortin

My Contact List/My Contact List/ContactsViewController.swift

// // ContactsViewController.swift // My Contact List // // Created by Michael Eierman on 8/5/19. // Copyright © 2019 Learning Mobile Apps. All rights reserved. // import UIKit import CoreData class ContactsViewController: UIViewController, UITextFieldDelegate, DateControllerDelegate { var currentContact: Contact? let appDelegate = UIApplication.shared.delegate as! AppDelegate @IBOutlet weak var scrollView: UIScrollView! @IBOutlet weak var txtName: UITextField! @IBOutlet weak var txtAddress: UITextField! @IBOutlet weak var txtCity: UITextField! @IBOutlet weak var txtState: UITextField! @IBOutlet weak var txtZip: UITextField! @IBOutlet weak var txtCell: UITextField! @IBOutlet weak var txtPhone: UITextField! @IBOutlet weak var txtEmail: UITextField! @IBOutlet weak var lblBirthdate: UILabel! @IBOutlet weak var btnChange: UIButton! @IBOutlet weak var sgmtEditMode: UISegmentedControl! @IBAction func changeEditMode(_ sender: Any) { let textFields: [UITextField] = [txtName, txtAddress, txtCity, txtState, txtZip, txtPhone, txtCell, txtEmail] if sgmtEditMode.selectedSegmentIndex == 0 { for textField in textFields { textField.isEnabled = false textField.borderStyle = UITextField.BorderStyle.none } btnChange.isHidden = true navigationItem.rightBarButtonItem = nil } else if sgmtEditMode.selectedSegmentIndex == 1{ for textField in textFields { textField.isEnabled = true textField.borderStyle = UITextField.BorderStyle.roundedRect } btnChange.isHidden = false navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .save, target: self, action: #selector(self.saveContact)) } } func textFieldShouldEndEditing(_ textField: UITextField) -> Bool { if currentContact == nil { let context = appDelegate.persistentContainer.viewContext currentContact = Contact(context: context) } currentContact?.contactName = txtName.text currentContact?.streetAddress = txtAddress.text currentContact?.city = txtCity.text currentContact?.state = txtState.text currentContact?.zipCode = txtZip.text currentContact?.cellNumber = txtCell.text currentContact?.phoneNumber = txtPhone.text currentContact?.email = txtEmail.text return true } @objc func saveContact() { appDelegate.saveContext() sgmtEditMode.selectedSegmentIndex = 0 changeEditMode(self) } override func viewDidLoad() { super.viewDidLoad() if currentContact != nil { txtName.text = currentContact!.contactName txtAddress.text = currentContact!.streetAddress txtCity.text = currentContact!.city txtState.text = currentContact!.state txtZip.text = currentContact!.zipCode txtPhone.text = currentContact!.phoneNumber txtCell.text = currentContact!.cellNumber txtEmail.text = currentContact!.email let formatter = DateFormatter() formatter.dateStyle = .short if currentContact!.birthday != nil { lblBirthdate.text = formatter.string(from: currentContact!.birthday!) } } self.changeEditMode(self) let textFields: [UITextField] = [txtName, txtAddress, txtCity, txtState, txtZip, txtPhone, txtCell, txtEmail] for textfield in textFields { textfield.addTarget(self, action: #selector(UITextFieldDelegate.textFieldShouldEndEditing(_:)), for: UIControl.Event.editingDidEnd) } } func dateChanged(date: Date) { if currentContact == nil { let context = appDelegate.persistentContainer.viewContext currentContact = Contact(context: context) } currentContact?.birthday = date let formatter = DateFormatter() formatter.dateStyle = .short lblBirthdate.text = formatter.string(from: date) } override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) self.registerKeyboardNotifications() } override func viewWillDisappear(_ animated: Bool) { super.viewWillDisappear(animated) self.unregisterKeyboardNotifications() } func registerKeyboardNotifications() { NotificationCenter.default.addObserver(self, selector: #selector(ContactsViewController.keyboardDidShow(notification:)), name: UIResponder.keyboardDidShowNotification, object: nil) NotificationCenter.default.addObserver(self, selector: #selector(ContactsViewController.keyboardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil) } func unregisterKeyboardNotifications() { NotificationCenter.default.removeObserver(self) } @objc func keyboardDidShow(notification: NSNotification) { let userInfo: NSDictionary = notification.userInfo! as NSDictionary let keyboardInfo = userInfo[UIResponder.keyboardFrameBeginUserInfoKey] as! NSValue let keyboardSize = keyboardInfo.cgRectValue.size // Get the existing contentInset for the scrollView and set the bottom property to //be the height of the keyboard var contentInset = self.scrollView.contentInset contentInset.bottom = keyboardSize.height self.scrollView.contentInset = contentInset self.scrollView.scrollIndicatorInsets = contentInset } @objc func keyboardWillHide(notification: NSNotification) { var contentInset = self.scrollView.contentInset contentInset.bottom = 0 self.scrollView.contentInset = contentInset self.scrollView.scrollIndicatorInsets = UIEdgeInsets.zero } /* // MARK: – Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation override func prepare(for segue: UIStoryboardSegue, sender: Any?) { // Get the new view controller using segue.destination. // Pass the selected object to the new view controller. } */ override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if(segue.identifier == "segueContactDate"){ let dateController = segue.destination as! DateViewController dateController.delegate = self } } }