ios - kABPersonLastName 不工作

Question

我使用此代码，对于 kABPersonEmailProperty 它有效，但对于 kABPersonLastNameProperty 无效。为什么？

NSMutableArray *allNumbers = [[NSMutableArray alloc] initWithCapacity:CFArrayGetCount(people)];
for (CFIndex i = 0; i < CFArrayGetCount(people); i++) {
    ABRecordRef person2 = CFArrayGetValueAtIndex(people, i);
    ABMultiValueRef numbers = ABRecordCopyValue(person2, kABPersonLastNameProperty);
    for (CFIndex j=0; j < ABMultiValueGetCount(numbers); j++) {
        NSString* number = (NSString *)CFBridgingRelease(ABMultiValueCopyValueAtIndex(numbers, j));
        [allNumbers addObject:number];
    }
    CFRelease(numbers);
}

Answer 1

一位联系人只有一个姓氏。简单地做:

NSString *lastName = (__bridge_transfer NSString *)ABRecordCopyValue(person2, kABPersonLastNameProperty);