Wie zähle ich die Anzahl der Kontakte in swift?

Question

wie die Anzahl der Kontakte in Swift zu zählen, ich bin sehr neu zu diesem iOS-Plattform wollte ich nur wissen, wie man den Kontakt zugreifen und zählen. Alle gültigen Eingaben werden geschätzt.

 // 
// ViewController.swift 
// test1 
// 
// Created by Lakshmi Kanth N on 6/23/17. 
// Copyright © 2017 Lakshmi Kanth N. All rights reserved. 
// 

import UIKit 
import Contacts 
import ContactsUI 
import AddressBook 

class ViewController: UIViewController, CNContactPickerDelegate{ 

    @IBOutlet var label: UILabel! 

    @IBOutlet var click: UIButton! 





    override func viewDidLoad() { 
     super.viewDidLoad() 
     let keysToFetch = [CNContactFormatter.descriptorForRequiredKeys(for: .fullName)] 

     // The container means 
     // that the source the contacts from, such as Exchange and iCloud 
     var allContainers: [CNContainer] = [] 
     do { 
      allContainers = try contactStore.containersMatchingPredicate(nil) 
     } catch { 
      print("Error fetching containers") 
     } 
     print (allContainers.count) 


     // Do any additional setup after loading the view, typically from a nib. 
    } 

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

    @IBAction func obclick(_ sender: UIButton) { 

     let entieyType = CNEntityType.contacts 
     let authStatus = CNContactStore.authorizationStatus(for: entieyType) 

     if authStatus == CNAuthorizationStatus.notDetermined{ 

      let contactStore = CNContactStore.init() 
      contactStore.requestAccess(for: entieyType, completionHandler: { (success, nil) in 

       if success { 

        self.openContacts() 
       } 

       else { 
        print("NOT") 
       } 

      }) 

     } 
     else if authStatus == CNAuthorizationStatus.authorized{ 
      self.openContacts() 

     } 
    } 


    func openContacts(){ 

     let contactPicker = CNContactPickerViewController.init() 
     contactPicker.delegate = self 
     self.present(contactPicker, animated: true, completion: nil) 



    } 


    func contactPickerDidCancel(_ picker: CNContactPickerViewController) { 
     picker.dismiss(animated: true) { 

     } 
    } 

    func contactPicker(_ picker: CNContactPickerViewController, didSelect contact: CNContact) { 


    } 




} 

oben ist mein Code, der die Kontakte zuzugreifen verwendet wird, aber ich brauche eine Anzahl von ihnen

Answer 1

// You may add more "keys" to fetch referred to official documentation 
let keysToFetch = [CNContactFormatter.descriptorForRequiredKeysForStyle(.FullName)] 

// The container means 
// that the source the contacts from, such as Exchange and iCloud 
var allContainers: [CNContainer] = [] 
do { 
    allContainers = try contactStore.containersMatchingPredicate(nil) 
} catch { 
    print("Error fetching containers") 
} 
print (allContainers.count) 

wenn u für die Suche

für gültige Eingabe überprüfen haben wollen

var contacts: [CNContact] = [] 
for container in allContainers { 
    let fetchPredicate = CNContact.predicateForContactsInContainerWithIdentifier(container.identifier) 

    do { 
     let containerResults = try contactStore.unifiedContactsMatchingPredicate(fetchPredicate, keysToFetch: keysToFetch) 
     // Put them into "contacts" 
     contacts.appendContentsOf(containerResults) 
    } catch { 
     print("Error fetching results for container") 
    } 
} 
print (containerResults.count) 

Answer 2

if item.isKeyAvailable(CNContactPhoneNumbersKey){ 
    let phoneNOs=item.phoneNumbers 
     print("Phone No count \(phoneNOs.count)") 
    }