NSLinguisticTagger 内存泄漏

Question

我一直在 Xcode 4.2 中摆弄 iOS 5.0 的新 NSLinguisticTagger。我使用此函数的目标是获取地址簿记录，然后以 NSString 的形式输出复合名称，有点像 ABRecordCopyCompositeName 所做的那样，但考虑到东亚语言和匈牙利语的命名顺序（最后一个而不是第一个最后） ）。这是函数：

NSString *text = [self getLocalizedFullNameOfRecord:[contacts objectAtIndex:indexPath.section];


- (NSString *) getLocalizedFullNameOfRecord:(ABRecordRef) person
{
    NSString *firstName = ABRecordCopyValue(person, kABPersonFirstNameProperty);
    NSString *middleName = ABRecordCopyValue(person, kABPersonMiddleNameProperty);
    NSString *lastName = ABRecordCopyValue(person, kABPersonLastNameProperty);
    NSString *prefix = ABRecordCopyValue(person, kABPersonPrefixProperty);
    NSString *suffix = ABRecordCopyValue(person, kABPersonSuffixProperty);
    NSString *fullName = @"";

    __block BOOL Asian;
    // Apologies to all Hungarians who aren't actually Asian
    __block NSArray *asianLanguages = [NSArray arrayWithObjects:@"zh-Hant", @"zh-Hans", @"ja", @"ko", @"hu", @"vi", nil];

    [firstName enumerateLinguisticTagsInRange:NSMakeRange(0, firstName.length) scheme: NSLinguisticTagSchemeLanguage options: NSLinguisticTaggerOmitWhitespace orthography: nil usingBlock:^(NSString *tag, NSRange tokenRange, NSRange sentenceRange, BOOL *stop){
        if ([asianLanguages containsObject:tag])
            Asian = YES;
        else
            Asian = NO;
    }];

    if(prefix)
        fullName = [fullName stringByAppendingFormat:@"%@ ", prefix];
    if(Asian && lastName)
        fullName = [fullName stringByAppendingFormat:@"%@ ", lastName];
    else if(firstName)
        fullName = [fullName stringByAppendingFormat:@"%@ ", firstName];
    if(middleName)
        fullName = [fullName stringByAppendingFormat:@"%@ ", middleName];
    if(Asian && firstName)
        fullName = [fullName stringByAppendingFormat:@"%@ ", firstName];
    else if(lastName)
        fullName = [fullName stringByAppendingFormat:@"%@ ", lastName];
    if(suffix)
        fullName = [fullName stringByAppendingFormat:@"%@", suffix];

    [firstName release];
    [middleName release];
    [lastName release];
    [prefix release];
    [suffix release];

    return fullName;
}

Instruments 告诉我，在该函数的每次迭代中，我在 enumerateLinguisticTagger 上泄漏了大约 16 到 32 个字节（显然不是块部分）。由于 NSLinguisticTagger 的在线资源仅限于其类参考和单个教程，因此我不知道从哪里以及如何开始寻找泄漏。

请帮忙？

Answer 1

我也有同样的问题。就我而言，当字符串有换行符（\n 或 \r）时，就会发生泄漏。