Find a "work" email address for a person in iPhone Address Book?

Is there a way to find a particular kind of email address for a person from the iPhone Address Book? I know how to get all of the email addresses for a person, just not how to identify what kind of e-mail address it is ("home", "work", etc.)...nor (and this might be preferable)开发者_如何学Go, a way to directly access that address without having to iterate through them all.

Thanks.

Check for a label of kABWorkLabel using ABMultiValueCopyLabelAtIndex.

For example, if you have an ABRecordRef named "person", this code will set a single NSString named "emailAddress":

// Email address (if only one, use it; otherwise, use the first work email address)
CFStringRef value, label;
ABMutableMultiValueRef multi = ABRecordCopyValue(person, kABPersonEmailProperty);
CFIndex count = ABMultiValueGetCount(multi);
if (count == 1) {
    value = ABMultiValueCopyValueAtIndex(multi, 0);
    emailAddress = (NSString*)value;
    [emailAddress retain];
    CFRelease(value);
} else {
    for (CFIndex i = 0; i < count; i++) {
        label = ABMultiValueCopyLabelAtIndex(multi, i);
        value = ABMultiValueCopyValueAtIndex(multi, i);

        // check for Work e-mail label
        if (label && CFStringCompare(label, kABWorkLabel, 0) == 0) {
            emailAddress = (NSString*)value;
            [emailAddress retain];
            break;
        }

        CFRelease(label);
        CFRelease(value);
    }
}
CFRelease(multi);