ios - 使用 CFRelease 内存不会减少/释放 AB 中有 5000 个联系人

Question

• 我有 5154 个联系人。
• 当我启动应用程序时，内存增长到 300MB
• 在 Xcode 中，即使应用程序多次转到 bg 和 fg，它也会保留在那里
• 不执行代码，内存保持在 70MB

为什么 CFRelease 没有释放所有内存？怎么了？或者这是预期的？

    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
    ABRecordRef source = ABAddressBookCopyDefaultSource(addressBook);
    CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, source, kABPersonSortByFirstName);
    CFIndex nPeople = CFArrayGetCount(allPeople);
    for (int i = 0; i < nPeople; i++)
    {
        ABRecordRef person = CFArrayGetValueAtIndex(allPeople, i);
        NSArray *expandedList = [self getExpandedContactsFromABRecordRef:person];
        // do some work

    }
    if (allPeople != NULL) {
        CFRelease(allPeople);
    }
    if (source != NULL) {
        CFRelease(source);
    }
    if (addressBook != NULL) {
        CFRelease(addressBook);
    }


- (NSArray *)getExpandedContactsFromABRecordRef:(ABRecordRef)person
{
    NSMutableArray *expandedContacts = [NSMutableArray new];
    CFStringRef firstNameRef = ABRecordCopyValue(person, kABPersonFirstNameProperty);
    CFStringRef lastNameRef  = ABRecordCopyValue(person, kABPersonLastNameProperty);
    NSString *firstName = (__bridge_transfer NSString*)firstNameRef;
    NSString *lastName =  (__bridge_transfer NSString*)lastNameRef;

    ABMultiValueRef multiPhones = ABRecordCopyValue(person, kABPersonPhoneProperty);
    for(CFIndex i=0;i<ABMultiValueGetCount(multiPhones);i++) {
        CFStringRef phoneNumberRef = ABMultiValueCopyValueAtIndex(multiPhones, i);
        NSString *phoneNumber = (__bridge_transfer NSString *) phoneNumberRef;
    }
    if (multiPhones != NULL) {
        CFRelease(multiPhones);
    }
    return expandedContacts;
}

Answer 1

我的错 - 这是错误的 - CoreFoundation 已经有一段时间了..不要发布它

(未删除，所以 op 看到了)

您不会释放通过 CFArrayGetValueAtIndex 获得的联系人 - 因此您泄露了很多联系人