ios - swift 3 : CNcontactpicker's phonenumber return 'not fetched' in device

Question

我们的应用程序具有获取设备联系人的功能，我刚刚使用了 CNcontacpickerview，当我在模拟器上运行它时它可以工作，但是当它在设备上运行时，电话号码返回“未获取”。是因为我的允许还是什么？奇怪的是它可以在模拟器上运行

import UIKit
import ContactsUI
import MessageUI

class SharedAboutViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,CNContactPickerDelegate,MFMessageComposeViewControllerDelegate {

    @IBOutlet weak var tableview: UITableView!

    override func viewDidLoad() {
        super.viewDidLoad()
        self.tableview.delegate = self;
        self.tableview.dataSource = self;
        // Do any additional setup after loading the view.
    }

    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
        //... handle sms screen actions
        self.dismiss(animated: true, completion: nil)
    }

    func contactPicker(_ picker: CNContactPickerViewController, didSelect contacts: [CNContact]) {
        for contact in contacts {
            print(contact)
        }

        let when = DispatchTime.now() + 0.2 // change 2 to desired number of seconds
        DispatchQueue.main.asyncAfter(deadline: when) {
            // Your code with delay
            if (MFMessageComposeViewController.canSendText()) {
                let controller = MFMessageComposeViewController()
                controller.body = "Message Body"
                controller.recipients = ["hello"]
                controller.messageComposeDelegate = self
                self.present(controller, animated: true, completion: nil)
            }
        }

    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let contactPicker = CNContactPickerViewController()
        contactPicker.delegate = self
        contactPicker.displayedPropertyKeys =
            [CNContactNicknameKey
                ,CNContactEmailAddressesKey]

        self.present(contactPicker, animated: true, completion: nil)
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 5;
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cells");
        cell?.textLabel?.text = "hello";
        return cell!;
    }

    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return self.view.frame.height*0.08;
    }
}

Answer 1

已解决

我刚刚在我的页面中添加了此代码以显示权限弹出窗口

let addressBookStore = CNContactStore()

addressBookStore.requestAccess(for: CNEntityType.contacts) { (isGranted, error) in
    print(isGranted)
    print(error)
}