从iPhone地址簿获取电子邮件地址

Question

我目前能够成功访问并从peoplePickerNavigationController获取数据，但我想要的是访问联系人的电子邮件地址，然后在按下联系人姓名时解除模态窗口

情景：

"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"

我目前的代码包括：

- (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;
}

Answer 1

这就是我的所作所为。

if(property == kABPersonEmailProperty) {
  CFTypeRef prop = ABRecordCopyValue(person, property);
  CFIndex index = ABMultiValueGetIndexForIdentifier(prop,  identifierForValue);
  NSString *email = (NSString *)ABMultiValueCopyValueAtIndex(prop, index);

  ...

  CFRelease(prop);
  [email release];
}