获取通讯录-AddressBookUI（OC）

1. 实现步骤

   // 1. 创建选择联系人的控制器
       ABPeoplePickerNavigationController *ppnc = [[ABPeoplePickerNavigationController alloc] init];
   
   // 2. 设置代理(用来接收用户选择的联系人信息)
       ppnc.peoplePickerDelegate = self;
   
   // 3. 弹出联系人控制器
       [self presentViewController:ppnc animated:YES completion:nil];
   
   // 4. 实现代理
   
       // 1. 选中某个联系人时调用
       - (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker didSelectPerson:(ABRecordRef)person
       {
   
       }
   
       // 2. 选中某个联系人某个属性时调用
       - (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker didSelectPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier
       {
   
       }
   
       // 3. 点击了取消按钮会执行该方法
       - (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker
       {
   
       }
   
   // 5. 在对应的代理方法中获取联系人信息
   
       // 1. 获取选中联系人的姓名(姓lastname和名firstname)
       CFStringRef firstname = ABRecordCopyValue(person, kABPersonFirstNameProperty);
       CFStringRef lastname = ABRecordCopyValue(person, kABPersonLastNameProperty);
       NSString *firstName = (__bridge_transfer NSString *)(firstname);
       NSString *lastName = (__bridge_transfer NSString *)(lastname);
       NSLog(@"%@ %@", firstName, lastName);
   
       // 2. 获取联系人的电话号码
       ABMultiValueRef phones = ABRecordCopyValue(person, kABPersonPhoneProperty);
       CFIndex count = ABMultiValueGetCount(phones);
       for (CFIndex i = 0; i < count; i++) {
           NSString *phoneLabel = (__bridge_transfer NSString *)ABMultiValueCopyLabelAtIndex(phones, i);
           NSString *phoneValue = (__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(phones, i);
               NSLog(@"label : %@ value : %@", phoneLabel, phoneValue);
           }
   
       // 3. 释放不再使用的对象
       CFRelease(phones);