从iPhone通讯簿获取电子邮件地址

我目前能够成功地从 peoplePickerNavigationController ,但我想做的是访问联系人的电子邮件地址,然后在按下联系人名称时取消模式窗口。

脚本:

"Button is clicked to add a contact
AddressBook Modal Window slides into view
Name of Contact is pressed
If available, the contact's email address is stored in an array
Dismiss modal window"

我当前的代码包括:

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier {
    ABMultiValueRef container = ABRecordCopyValue(person, property);
    CFStringRef contactData = ABMultiValueCopyValueAtIndex(container, identifier);
    CFRelease(container);
    NSString *contactString = [NSString stringWithString:(NSString *)contactData];
    CFRelease(contactData);

    NSLog(@"Value is: %@", contactString);

    [self dismissModalViewControllerAnimated:YES];  
    return NO;
}