ios - 使用 ABPeoplePickerNavigationController 和 Core Data 的应用程序中出现奇怪的 48 字节泄漏

Question

此时我不确定这些泄漏是否与 CoreData 相关或什么，因为我在同一应用程序的其他部分中因明显不同的原因经历了 48 字节 strdup 泄漏 - 请参阅我的其他问题:another stack overflow question

但是，假设没有关系，我有一个 viewController，它根据用户选择的选项，呈现一个 ABPeoplePicker。然而，无论是否选择联系人，似乎仅仅通过呈现选择器我就会泄漏。

用于呈现选择器的代码是:

- (void)showPeoplePickerController
{
    ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
    picker.displayedProperties = [NSArray arrayWithObject:[NSNumber numberWithInt:kABPersonEmailProperty]];
    picker.peoplePickerDelegate = self;
    [self presentModalViewController:picker animated:YES];
    [picker release];
}

委托(delegate)方法实现如下:

- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker
{
    [self dismissModalViewControllerAnimated:YES];
}

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person 
{
    return YES;
}

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier
{
    ABMultiValueRef emails = ABRecordCopyValue(person, property);

    if(userEmailString)
        [userEmailString release];

    userEmailString = (NSString*)ABMultiValueCopyValueAtIndex(emails, identifier);

    CFRelease(emails);

    [[NSNotificationCenter defaultCenter] postNotificationName:@"recipientEmailDidUpdateNotification"  
                                                        object:self]; 
    return NO;
}

为了以防万一，userEmailString 是 Controller 保留的 NSString 属性(这意味着我也可以使用 self.userEmailString = blah)。

这些是 Instruments 报告泄漏的屏幕截图。但请注意，它认为选择器没有被释放，尽管我在呈现它后调用释放。我也尝试过使用 CFRelease() 来代替......但仍然是一样的。

Answer 1

无论如何，是的..泄漏在 SDK 中。