问如何以编程方式从地址簿获取联系人信息

EN

ABRecordRef ref;
ABAddressBookRef m_addressbook = ABAddressBookCreate();

CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(m_addressbook);
CFIndex nPeople = ABAddressBookGetPersonCount(m_addressbook);
NSLog(@" n people count values %ld",nPeople);

for (int i=0; i<nPeople; i++)
{ 
    AFContacts *contactOfAPerson = [[AFContacts alloc] init];
    ref = CFArrayGetValueAtIndex(allPeople,i);
    [contactOfAPerson setEmail:(NSString *)ABRecordCopyValue(ref, kABPersonEmailProperty)];
    [contactOfAPerson setFirstName:(NSString *)ABRecordCopyValue(ref, kABPersonFirstNameProperty)];
    //[contactOfAPerson setPhoneNumber:(NSString *)ABRecordCopyValue(ref, kABPersonPhoneMobileLabel)];
    [contactList addObject:contactOfAPerson];
    [contactOfAPerson release];
}
CFRelease(ref);
}