Iphone ABMultiValueRef内存泄漏？

当我使用仪器时，它会抱怨emailProperty内存泄漏。Analyzer抱怨mobileLabel。下面是代码片段。考虑到我使用的是release和CFRelease，它抱怨有什么明显的原因吗？提前感谢您的回复

    // Email is a multi value property, take "Home"
ABMultiValueRef emailProperty = ABRecordCopyValue(person, kABPersonEmailProperty);
NSString *email;
NSString *mobileLabel;
for (CFIndex i = 0; i < ABMultiValueGetCount(emailProperty); i++)
{
    mobileLabel = (NSString *)ABMultiValueCopyLabelAtIndex(emailProperty, i);
    if ([mobileLabel isEqualToString:@"_$!<Home>!$_"])
    {
        email = (NSString *)ABMultiValueCopyValueAtIndex(emailProperty,i);
        self.emailAddress.text = email;
        self.emailAddress.enabled = NO;
        self.emailAddress.borderStyle = UITextBorderStyleNone;
        [email release];
        break;
    }
    [mobileLabel release];

}
CFRelease(emailProperty);

//电子邮件是一种多值属性，请使用“Home”
ABMultiValueRef emailProperty=ABRecordCopyValue（person，kABPersonEmailProperty）；
NSString*电子邮件；
NSString*移动标签；
对于（CFIndex i=0；i

我从使用NSString*切换到使用CFString+CFRelease，这似乎奏效了。分析仪仍在抱怨，但它似乎在Profile->Leaks下运行良好