How to fetch all contacts record in iOS 9 using Contacts Framework

Question

Most part of AddressBook framework is deprecated in iOS 9. In the new Contacts Framework documentation only shows how to fetch records matches a NSPredicate, bu

Answer 1

@flohei answer in Swift-4

 var contacts: [CNContact] = {
        let contactStore = CNContactStore()
        let keysToFetch = [
            CNContactFormatter.descriptorForRequiredKeys(for: CNContactFormatterStyle.fullName),
            CNContactEmailAddressesKey,
            CNContactPhoneNumbersKey,
            CNContactImageDataAvailableKey,
            CNContactThumbnailImageDataKey] as [Any]

        // Get all the containers
        var allContainers: [CNContainer] = []
        do {
            allContainers = try contactStore.containers(matching: nil)
        } catch {
            print("Error fetching containers")
        }

        var results: [CNContact] = []

        // Iterate all containers and append their contacts to our results array
        for container in allContainers {
            let fetchPredicate = CNContact.predicateForContactsInContainer(withIdentifier: container.identifier)

            do {
                let containerResults = try contactStore.unifiedContacts(matching: fetchPredicate, keysToFetch: keysToFetch as! [CNKeyDescriptor])
                results.append(contentsOf: containerResults)
            } catch {
                print("Error fetching results for container")
            }
        }

        return results
    }()