How to create vCard/vcf file to use in share sheet? - ios

Question

I'm new to swift and methods I am finding are deprecated regarding my issue. I'm building a directory app and I'm pulling contact data from an API, not from the phone's address book.
In iOS, if you go to your address book, you can select a contact and choose 'Share Contact' which brings up a share sheet. I want this exact functionality in my app.
I think I've got Share Sheets figured out, and here's my code for that:
#IBAction func actShare(sender: AnyObject) {
let activityViewController = UIActivityViewController(activityItems: ["text" as NSString], applicationActivities: nil)
presentViewController(activityViewController, animated: true, completion: {})
}
I want to to change "text" as NSString to be a vCard, as that is the object that iOS shares from the address book, right? Assuming I'm right, I want to create a vCard from my own app's contact object in order to share it to appropriate apps (email, sms, etc).
How can I achieve that in Swift? If I'm wrong, please correct me and show me what I need to do. Thanks.
EDIT: Okay, here's my changes.
#IBAction func actShare(sender: AnyObject) {
do {
var contactData = NSData()
try contactData = CNContactVCardSerialization.dataWithContacts([createContact()])
let activityViewController = UIActivityViewController(activityItems: [contactData as NSData], applicationActivities: nil)
presentViewController(activityViewController, animated: true, completion: {})
} catch {
print("CNContactVCardSerialization cannot save address")
}
and
func createContact() -> CNMutableContact {
let contactCard = CNMutableContact()
contactCard.givenName = "John"
contactCard.familyName = "Doe"
contactCard.emailAddresses = [
CNLabeledValue(label: CNLabelWork, value: "john.doe#email.com")
]
return contactCard
}
However, when I click the share button and it brings up my share sheet, I select the application I want to share to and it doesn't add/attach the contact data as intended. How do I accomplish this?

Answer 1

The trick here is to save the contact to a VCard (.vcf) file using CNContactVCardSerialization.dataWithContacts, then pass the file URL to the UIActivityViewController. The activity view controller detects the VCard format from the file extension, and shows the apps where the format is supported (e.g. Messages, Mail, Notes, Airdrop, etc)
Example:
#IBAction func buttonTapped(button: UIButton) {
let contact = createContact()
do {
try shareContacts([contact])
}
catch {
// Handle error
}
}
func shareContacts(contacts: [CNContact]) throws {
guard let directoryURL = NSFileManager.defaultManager().URLsForDirectory(.CachesDirectory, inDomains: .UserDomainMask).first else {
return
}
var filename = NSUUID().UUIDString
// Create a human friendly file name if sharing a single contact.
if let contact = contacts.first where contacts.count == 1 {
if let fullname = CNContactFormatter().stringFromContact(contact) {
filename = fullname.componentsSeparatedByString(" ").joinWithSeparator("")
}
}
let fileURL = directoryURL
.URLByAppendingPathComponent(filename)
.URLByAppendingPathExtension("vcf")
let data = try CNContactVCardSerialization.dataWithContacts(contacts)
print("filename: \(filename)")
print("contact: \(String(data: data, encoding: NSUTF8StringEncoding))")
try data.writeToURL(fileURL, options: [.AtomicWrite])
let activityViewController = UIActivityViewController(
activityItems: [fileURL],
applicationActivities: nil
)
presentViewController(activityViewController, animated: true, completion: {})
}
func createContact() -> CNContact {
// Creating a mutable object to add to the contact
let contact = CNMutableContact()
contact.imageData = NSData() // The profile picture as a NSData object
contact.givenName = "John"
contact.familyName = "Appleseed"
let homeEmail = CNLabeledValue(label:CNLabelHome, value:"john#example.com")
let workEmail = CNLabeledValue(label:CNLabelWork, value:"j.appleseed#icloud.com")
contact.emailAddresses = [homeEmail, workEmail]
contact.phoneNumbers = [CNLabeledValue(
label:CNLabelPhoneNumberiPhone,
value:CNPhoneNumber(stringValue:"[phone]"))]
return contact
}

Answer 2

You may use a CNContact (requires iOS 9):
let contact = CNMutableContact()
contact.givenName = "John"
contact.familyName = "Doe"
contact.emailAddresses = [
CNLabeledValue(label: CNLabelWork, value: "john.doe#email.com")
]

Answer 3

It is very simple to create contact from your iOS app and share over
the external apps.
First you need to create Share Button Action like below :-
-(void)shareContactAction:(UIButton*)sender
{
CNMutableContact *selectedCon = [[CNMutableContact alloc] init];
selectedCon.givenName = #"ABC";
selectedCon.familyName = #"XYZ";
NSString *phoneNum = #"+91-XXXXXXXXXXX"
CNLabeledValue *contactNum1 = [CNLabeledValue labeledValueWithLabel:CNLabelHome value:[CNPhoneNumber phoneNumberWithStringValue:phoneNum]];
selectedCon.phoneNumbers = #[contactNum1];
NSString *url=[self saveContactDetailsToDocDir:selectedCon];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[#"Contact", [NSURL fileURLWithPath:url]] applicationActivities:nil];
[self presentViewController:activityViewController animated:YES completion:nil];
}
Than you can call the function below which will return the path of the
contact card in above button event.
- (NSString *)saveContactDetailsToDocDir:(CNContact *)contact {
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString * contactCardPath = [documentsDirectory stringByAppendingString:#"/vCardName.vcf"];
NSArray *array = [[NSArray alloc] initWithObjects:contact, nil];
NSError *error;
NSData *data = [CNContactVCardSerialization dataWithContacts:array error:&error];
[data writeToFile:contactCardPath atomically:YES];
return contactCardPath;
}

Answer 4

Updated for Swift 4:
#IBAction func buttonTapped(button: UIButton) {
let contact = createContact()
do {
try shareContacts(contacts: [contact])
}
catch {
// Handle error
}
}
func shareContacts(contacts: [CNContact]) throws {
guard let directoryURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first else {
return
}
var filename = NSUUID().uuidString
// Create a human friendly file name if sharing a single contact.
if let contact = contacts.first, contacts.count == 1 {
if let fullname = CNContactFormatter().string(from: contact) {
filename = fullname.components(separatedBy: " ").joined(separator: "")
}
}
let fileURL = directoryURL
.appendingPathComponent(filename)
.appendingPathExtension("vcf")
let data = try CNContactVCardSerialization.data(with: contacts)
print("filename: \(filename)")
print("contact: \(String(describing: String(data: data, encoding: String.Encoding.utf8)))")
try data.write(to: fileURL, options: [.atomicWrite])
let activityViewController = UIActivityViewController(
activityItems: [fileURL],
applicationActivities: nil
)
present(activityController, animated: true, completion: nil)
}
func createContact() -> CNContact {
// Creating a mutable object to add to the contact
let contact = CNMutableContact()
contact.imageData = NSData() as Data // The profile picture as a NSData object
contact.givenName = "John"
contact.familyName = "Appleseed"
let homeEmail = CNLabeledValue(label:CNLabelHome, value:"john#example.com")
let workEmail = CNLabeledValue(label:CNLabelWork, value:"j.appleseed#icloud.com")
contact.emailAddresses = [homeEmail, workEmail]
contact.phoneNumbers = [CNLabeledValue(
label:CNLabelPhoneNumberiPhone,
value:CNPhoneNumber(stringValue:"[phone]"))]
return contact
}

Answer 5

Successful approach:
First get all Contacts then save it and after this make .vcf file and also share the .vcf in Emails, WhatsApp, Messaging, Skype and save in iPhone files....
#IBAction func vcfPressed(_ sender: UIButton) {
let arrayContacts = self.fetchAllContacts()
self.saveContactsInDocument(contacts: arrayContacts)
let contact = fetchAllContacts()
do {
try shareContacts(contacts: contact)
}
catch {
}
}
func shareContacts(contacts: [CNContact]) throws {
guard let directoryURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first else {
return}
var filename = NSUUID().uuidString
if let contact = contacts.first, contacts.count == 1 {
if let fullname = CNContactFormatter().string(from: contact) {
filename = fullname.components(separatedBy: " ").joined(separator: "")}}
let fileURL = directoryURL.appendingPathComponent(filename).appendingPathExtension("vcf")
let data = try CNContactVCardSerialization.data(with: contacts)
print("filename: \(filename)")
print("contact: \(String(data: data, encoding: String.Encoding.utf8))")
try data.write(to: fileURL, options: [.atomicWrite])
let activityViewController = UIActivityViewController(activityItems: [fileURL],applicationActivities: nil)
present(activityViewController, animated: true, completion: {})
}
func fetchAllContacts() -> [CNContact] {
var contacts : [CNContact] = []
let contactStore = CNContactStore()
let fetchReq = CNContactFetchRequest.init(keysToFetch: [CNContactVCardSerialization.descriptorForRequiredKeys()])
do {
try contactStore.enumerateContacts(with: fetchReq) { (contact, end) in
contacts.append(contact)
}}
catch {print("Failed to fetch")}
return contacts
}