Limit what opens appear while sharing contact - iphone

Question

I want to share a contact inside of my application but I only want to let the user do it via Message and Mail. Can I block out all other options on the alert sheet?
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)
try data.write(to:fileURL, options: [.atomicWrite])
let textToShare = "This is my clear captions text test"
let objectsToShare = [textToShare, fileURL] as [Any]
let activityViewController = UIActivityViewController(
activityItems: objectsToShare,
applicationActivities: nil
)
present(activityViewController, animated: true, completion: {})
}

Answer 1

It is not possible to simply exclude everything besides Mail and iMessage but you can do the following.
You can use a function to exclude options for the UIActivityViewController but there are only some apps you can disable. To disable more you would need a private API and you would violate the App Guidelines Apple has for all iOS Apps.
You are allowed to disable these types:
UIActivityTypePostToFacebook,
UIActivityTypePostToTwitter,
UIActivityTypePostToWeibo,
UIActivityTypeMessage,
UIActivityTypeMail,
UIActivityTypePrint,
UIActivityTypeCopyToPasteboard,
UIActivityTypeAssignToContact,
UIActivityTypeSaveToCameraRoll,
UIActivityTypeAddToReadingList,
UIActivityTypePostToFlickr,
UIActivityTypePostToVimeo,
UIActivityTypePostToTencentWeibo,
UIActivityTypeAirDrop
by using this code (Xcode suggests you the exact types):
activityController.excludedActivityTypes = [
UIActivityType.assignToContact,
// ... and all of the types you want to disable
// If you know the rawValue/BundleID of other types you can try to disable them too like this
UIActivityType(rawValue: "..."),
]
Apple Documentation about UIActivityViewController
Check out this question: How to exclude Notes and Reminders apps from the UIActivityViewController?