ios - 使用 ABRecord 和 ARC 的潜在泄漏

Question

我有这个代码:

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker 
      shouldContinueAfterSelectingPerson:(ABRecordRef)personRecord
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier
{
    //TODO: release phoneNumberProperty when done
    ABMultiValueRef phoneNumberProperty = ABRecordCopyValue(personRecord, kABPersonPhoneProperty);
    int selectedPhNum = ABMultiValueGetIndexForIdentifier(phoneNumberProperty, identifier);//Turns identifier into index
    NSString *txtNum = (NSString *)CFBridgingRelease(ABMultiValueCopyValueAtIndex(phoneNumberProperty, selectedPhNum));
    //NSLog(@"Selected ph num = %@", txtNum);
    [[self toTextField] setText:txtNum];
    phoneNumberProperty = nil;
    [self dismissViewControllerAnimated:YES completion:NULL];

静态分析器说存在潜在泄漏。我知道我需要释放 phoneNumberProperty 但如何释放？我正在使用 ARC，因此 [phoneNumberProperty release] 无法正常工作。将它设置为零，它仍然会提示。

感谢帮助

Answer 1

使用 CFRelease 函数释放您的 ABMultiValueRef 变量:

...
if (phoneNumberProperty)
    CFRelease(phoneNumberProperty);