Pushing NContactViewController results in black navigationbar. Why?

I have been trying to solve this problem for a while, so here is my question :

I want to create an unknown contact with a given set of values as you may say:

fileprivate func showUnknownContactViewController() {
let aContact = CNMutableContact()
let newEmail = CNLabeledValue(label: CNLabelWork, value: email! as NSString)
aContact.emailAddresses.append(newEmail)

let workPhone = CNLabeledValue(label: CNLabelWork, value: CNPhoneNumber(stringValue : phone!))
aContact.phoneNumbers.append(workPhone)


let ucvc = CNContactViewController(forUnknownContact: aContact)
ucvc.delegate = self
ucvc.allowsEditing = true
ucvc.allowsActions = true
ucvc.alternateName = firstName! + " " + lastName!
ucvc.title = "Company"
ucvc.message = UserDefaults.standard.string(forKey: "company")!
ucvc.contactStore = self.store //needed for editing/adding contacts?

self.navigationController?.pushViewController(ucvc, animated: true)
}


I also called the delegate function, which I am not sure has any effect:

func contactViewController(_ viewController: CNContactViewController, shouldPerformDefaultActionFor property: CNContactProperty) -> Bool {

return true
}


When pushing ucvc my navigationbar becomes black, while this tutorial which i followed doesn't. Note: I dont use a tableview, i just used the showUnknownContactViewController function.

import UIKit
import Contacts
import ContactsUI
enum ActionType: Int {
case pickContact = 0
case createNewContact
case displayContact
case editUnknownContact
}
// Height for the Edit Unknown Contact row
let kUIEditUnknownContactRowHeight: CGFloat = 81.0

class ViewController: UITableViewController, CNContactPickerDelegate, CNContactViewControllerDelegate {
fileprivate var store: CNContactStore!
fileprivate var menuArray: NSMutableArray?

override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
store = CNContactStore()
checkContactsAccess()
}

fileprivate func checkContactsAccess() {
switch CNContactStore.authorizationStatus(for: .contacts) {
// Update our UI if the user has granted access to their Contacts
case .authorized:
self.accessGrantedForContacts()

// Prompt the user for access to Contacts if there is no definitive answer
case .notDetermined :
self.requestContactsAccess()

// Display a message if the user has denied or restricted access to Contacts
case .denied,
.restricted:
let alert = UIAlertController(title: "Privacy Warning!",
message: "Permission was not granted for Contacts.",
preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
}

fileprivate func requestContactsAccess() {

store.requestAccess(for: .contacts) {granted, error in
if granted {
DispatchQueue.main.async {
self.accessGrantedForContacts()
return
}
}
}
}

// This method is called when the user has granted access to their address book data.
fileprivate func accessGrantedForContacts() {
// Load data from the plist file
let plistPath = Bundle.main.path(forResource: "Menu", ofType:"plist")
self.menuArray = NSMutableArray(contentsOfFile: plistPath!)
self.tableView.reloadData()
}


//MARK: Table view methods

override func numberOfSections(in tableView: UITableView) -> Int {
return self.menuArray?.count ?? 0
}

// Customize the number of rows in the table view.
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}

// Customize the appearance of table view cells.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let DefaultCellIdentifier = "DefaultCell"
let SubtitleCellIdentifier = "SubtitleCell"
var aCell: UITableViewCell?
// Make the Display Picker and Create New Contact rows look like buttons
if indexPath.section < 2 {
aCell = tableView.dequeueReusableCell(withIdentifier: DefaultCellIdentifier)
if aCell == nil {
aCell = UITableViewCell(style: .default, reuseIdentifier: DefaultCellIdentifier)
}
aCell!.textLabel?.textAlignment = .center
} else {
aCell = tableView.dequeueReusableCell(withIdentifier: SubtitleCellIdentifier)
if aCell == nil {
aCell = UITableViewCell(style: .subtitle, reuseIdentifier: SubtitleCellIdentifier)
aCell!.accessoryType = .disclosureIndicator
aCell!.detailTextLabel?.numberOfLines = 0
}
// Display descriptions for the Edit Unknown Contact and Display and Edit Contact rows
aCell!.detailTextLabel?.text = (self.menuArray![indexPath.section] as AnyObject).value(forKey: "description") as! String?
}

aCell!.textLabel?.text = (self.menuArray![indexPath.section] as AnyObject).value(forKey: "title") as! String?
return aCell!
}

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let actionType = ActionType(rawValue: indexPath.section) {
switch actionType {
case .pickContact:
self.showContactPickerController()
case .createNewContact:
showNewContactViewController()
case .displayContact:
showContactViewController()
case .editUnknownContact:
showUnknownContactViewController()
}
} else {
self.showContactPickerController()
}
}

//MARK: TableViewDelegate method
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
// Change the height if Edit Unknown Contact is the row selected
return (indexPath.section == ActionType.editUnknownContact.rawValue) ? kUIEditUnknownContactRowHeight : tableView.rowHeight
}

//MARK: Show all contacts
// Called when users tap "Display Picker" in the application. Displays a list of contacts and allows users to select a contact from that list.
// The application only shows the phone, email, and birthdate information of the selected contact.
fileprivate func showContactPickerController() {
let picker = CNContactPickerViewController()
picker.delegate = self

// Display only a person's phone, email, and birthdate
let displayedItems = [CNContactPhoneNumbersKey, CNContactEmailAddressesKey, CNContactBirthdayKey]
picker.displayedPropertyKeys = displayedItems

// Show the picker
self.present(picker, animated: true, completion: nil)
}


//MARK: Display and edit a person
// Called when users tap "Display and Edit Contact" in the application. Searches for a contact named "Appleseed" in
// in the address book. Displays and allows editing of all information associated with that contact if
// the search is successful. Shows an alert, otherwise.
fileprivate func showContactViewController() {
// Search for the person named "Appleseed" in the Contacts
let name = "Appleseed"
let predicate: NSPredicate = CNContact.predicateForContacts(matchingName: name)
let descriptor = CNContactViewController.descriptorForRequiredKeys()
let contacts: [CNContact]
do {
contacts = try store.unifiedContacts(matching: predicate, keysToFetch: [descriptor])
} catch {
contacts =
}
// Display "Appleseed" information if found in the address book
if !contacts.isEmpty {
let contact = contacts[0]
let cvc = CNContactViewController(for: contact)
cvc.delegate = self
// Allow users to edit the person’s information
cvc.allowsEditing = true
//cvc.contactStore = self.store //seems to work without setting this.
self.navigationController?.pushViewController(cvc, animated: true)
} else {
// Show an alert if "Appleseed" is not in Contacts
let alert = UIAlertController(title: "Error",
message: "Could not find (name) in the Contacts application.",
preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Cancel", style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
}

//MARK: Create a new person
// Called when users tap "Create New Contact" in the application. Allows users to create a new contact.
fileprivate func showNewContactViewController() {
let npvc = CNContactViewController(forNewContact: nil)
npvc.delegate = self
//npvc.contactStore = self.store //seems to work without setting this.

let navigation = UINavigationController(rootViewController: npvc)
self.present(navigation, animated: true, completion: nil)
}

//MARK: Add data to an existing person
// Called when users tap "Edit Unknown Contact" in the application.
fileprivate func showUnknownContactViewController() {
let aContact = CNMutableContact()
let newEmail = CNLabeledValue(label: CNLabelOther, value: "John-Appleseed@mac.com" as NSString)
aContact.emailAddresses.append(newEmail)

let ucvc = CNContactViewController(forUnknownContact: aContact)
ucvc.delegate = self
ucvc.allowsEditing = true
ucvc.allowsActions = true
ucvc.alternateName = "John Appleseed"
ucvc.title = "John Appleseed"
ucvc.message = "Company, Inc"
ucvc.contactStore = self.store //needed for editing/adding contacts?

self.navigationController?.pushViewController(ucvc, animated: true)
}

//MARK: CNContactPickerDelegate methods
// The selected person and property from the people picker.
func contactPicker(_ picker: CNContactPickerViewController, didSelect contactProperty: CNContactProperty) {
let contact = contactProperty.contact
let contactName = CNContactFormatter.string(from: contact, style: .fullName) ?? ""
let propertyName = CNContact.localizedString(forKey: contactProperty.key)
let message = "Picked (propertyName) for (contactName)"

DispatchQueue.main.async {
let alert = UIAlertController(title: "Picker Result",
message: message,
preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
}

// Implement this if you want to do additional work when the picker is cancelled by the user.
func contactPickerDidCancel(_ picker: CNContactPickerViewController) {
picker.dismiss(animated: true, completion: {})
}


//MARK: CNContactViewControllerDelegate methods
// Dismisses the new-person view controller.
func contactViewController(_ viewController: CNContactViewController, didCompleteWith contact: CNContact?) {
//
self.dismiss(animated: true, completion: nil)
}

func contactViewController(_ viewController: CNContactViewController, shouldPerformDefaultActionFor property: CNContactProperty) -> Bool {
return true
}


override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}


}


I have tried to change the navigationcontroller of the ucvc like this:

ucvc.navigationController?.navigationBar.backgroundColor = UIColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 1)


I have also tried to set the backgroundImage to an empty image:

ucvc.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)


Something interesting I see when I load the ucvc, I get this from console log:

Access to PassKit Shared Cache file denied. Please verify sandbox exceptions and/or file a Radar.

But it still turns out black. What am I doing wrong and how would I prevent the black navigationbar? It looks like this:

Navigation bar

Just let me know if I am posting to much code, I think its better with too much than too little:)

1 Answer
1

Have you tried to see how the storyboard on the tutorial is, compared to yours?

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