将新号码添加到 ABAddressBook 中的现有 ABRecord - iPhone

我正在尝试通过我的应用程序更新地址簿中现有联系人的内容，但不需要用户界面。场景是这样的：

1 用户输入号码和姓名 2 应用程序检查该姓名是否在联系人列表中 3 如果是，则检查该号码是否是该姓名的联系人之一 4 如果没有，则将其添加到该名称中

我已经设法实现步骤 1-3，但我找不到执行步骤 4 的方法。有人可以帮忙吗？

下面是我的代码的样子

...
CFIndex lTotalContactsCount = ABAddressBookGetPersonCount(lAddressBook);
NSArray *people = (NSArray *)ABAddressBookCopyArrayOfAllPeople(lAddressBook );

for (CFIndex i = 0; i < lTotalContactsCount; i++)
{
    ABRecordRef lRef = (ABRecordRef)[people objectAtIndex:i];   

    ...
    // if names match
    {
        ABMutableMultiValueRef lPhoneNumbers = ABRecordCopyValue(lRef, kABPersonPhoneProperty);
        CFIndex lContactPhoneNumberCount = ABMultiValueGetCount(lPhoneNumbers);
        ABRecordID contactID = ABRecordGetRecordID(lRef);

        ...
         // if numbers dont match
        {
                   // THIS BIT IS NOT WOKRING
            CFErrorRef error = NULL; 

            ABMutableMultiValueRef multiPhone = ABMultiValueCreateMutable(kABMultiStringPropertyType);
            ABMultiValueAddValueAndLabel(multiPhone, number, (CFStringRef)@"Duplicate", NULL);

        //  ABRecordSetValue(newPerson, kABPersonFirstNameProperty, name, &error);

            //add the number to the contact
            ABRecordSetValue(lRef, kABPersonPhoneProperty, multiPhone,nil);
        //  ABAddressBookAddRecord(lAddressBook, lRef, &error);
            ABAddressBookSave(lAddressBook, &error);
        }

        if( firstName )
            CFRelease(firstName);
        if( lastName )
            CFRelease(lastName);
        if( lPhoneNumbers )
            CFRelease(lPhoneNumbers);

        // no need to search other entries
        if(numberExists)
            break;
    }

今天早上进一步查看 API 后，我设法找到了解决方案。干得好：

// contactId is the ID of the person i need to add a new number to his contacts
// got the id through : ABRecordGetRecordID( ABRecordRef )
ABRecordRef person = ABAddressBookGetPersonWithRecordID(lAddressBook, contactID);
ABMutableMultiValueRef multiPhone = ABMultiValueCreateMutableCopy(lPhoneNumbers);
ABMultiValueAddValueAndLabel(multiPhone, number, (CFStringRef)@"Duplicate", NULL);      
//add the number to the contact
ABRecordSetValue(person, kABPersonPhoneProperty, multiPhone,nil);
ABAddressBookSave(lAddressBook, &error);