不要轻易给出你的通讯录权限

import SwiftUI
import Contacts

struct ContentView: View {
    @State private var contacts: [CNContact] = []
    
    var body: some View {
        VStack {
            Button("请求通讯录权限") {
                requestContactsPermission()
            }
            .padding()
            
            List(contacts, id: \.identifier) { contact in
                Text("\(contact.givenName) \(contact.familyName)")
            }
        }
    }

    func requestContactsPermission() {
        let contactStore = CNContactStore()

        switch CNContactStore.authorizationStatus(for: .contacts) {
        case .authorized:
            fetchContacts()
            
        case .notDetermined:
            contactStore.requestAccess(for: .contacts) { (granted, error) in
                if granted {
                    DispatchQueue.main.async {
                        self.fetchContacts()
                    }
                } else {
                    print("用户拒绝了通讯录权限")
                }
            }
            
        case .denied, .restricted:
            print("通讯录权限被拒绝或受到限制")
            
        @unknown default:
            break
        }
    }

    func fetchContacts() {
        do {
            let keysToFetch = [CNContactGivenNameKey, CNContactFamilyNameKey, CNContactPhoneNumbersKey]
            let request = CNContactFetchRequest(keysToFetch: keysToFetch as [CNKeyDescriptor])

            try CNContactStore().enumerateContacts(with: request) { contact, _ in
                contacts.append(contact)
                print(contact.givenName, contact.familyName, contact.phoneNumbers.first?.value.stringValue)
            }
        } catch {
            print("无法获取通讯录信息: \(error.localizedDescription)")
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}