AddressBook 프레임 워크에서 메모리 누수가 발생했습니다.

Question

ABAddressBookGetPersonWithRecordID 및 ABPersonSetImageData와 함께 메모리 누수가 발생합니다. 나는 여기에 게시하기 전에 솔루션을 찾고 있었지만 여전히 이해할 수는 없습니다. iPhone 3GS 또는 iPhone 3G와의 접촉이 아주 길어서 실제로 응용 프로그램이 충돌합니다. 다음은 didSelectRowAtIndexPath 메소드의 코드입니다. 나는이 방법들로 샘플 코드를 보았고 내가 무엇을 놓치고 있는지 보지 못했다. 미리 감사드립니다. (실수 죄송합니다 ...)

Contact *myContact = [fetchedResultsController objectAtIndexPath:indexPath]; 

cancelCreateContact = NO; 


ABAddressBookRef ab = ABAddressBookCreate(); 
int len = ABAddressBookGetPersonCount(ab); 
ABRecordID contactID; 
ABRecordRef person; 
BOOL alreadyExists = NO; 
CFStringRef first, last; 

for(int i = 1; i < (len + 1); i++) 
{ 
    person = ABAddressBookGetPersonWithRecordID(ab, (ABRecordID)i); 

    if(!person){ 
     len++; 
     continue; 
    } 

    first = ABRecordCopyValue(person, kABPersonFirstNameProperty); 
    last = ABRecordCopyValue(person, kABPersonLastNameProperty); 

    if ([[(NSString*)first lowercaseString] isEqualToString:[myContact.firstname lowercaseString]] && [[(NSString*)last lowercaseString] isEqualToString:[myContact.lastname lowercaseString]]) { 
     alreadyExists = YES; 
     contactID = ABRecordGetRecordID(person); 
     break; 
    } 
} 

if (alreadyExists) { 
    //NSLog(@"already exists"); 
    ABRecordRef aContactFound = ABAddressBookGetPersonWithRecordID(ab, contactID); 

    ABRecordRef aRecord = ABPersonCreate(); 

    CFErrorRef anError = NULL; 

    CFStringRef firstname = ABRecordCopyValue(aContactFound, kABPersonFirstNameProperty); 
    ABRecordSetValue(aRecord, kABPersonFirstNameProperty, firstname, &anError); 
    CFRelease(firstname); 

    CFStringRef lastname = ABRecordCopyValue(aContactFound, kABPersonLastNameProperty); 
    ABRecordSetValue(aRecord, kABPersonLastNameProperty, lastname, &anError); 
    CFRelease(lastname); 

    CFStringRef job = ABRecordCopyValue(aContactFound, kABPersonJobTitleProperty); 
    ABRecordSetValue(aRecord, kABPersonJobTitleProperty, job, &anError); 
    CFRelease(job); 

    ABMultiValueRef instantMessage = ABRecordCopyValue(aContactFound, kABPersonInstantMessageProperty); 
    ABRecordSetValue(aRecord, kABPersonInstantMessageProperty, instantMessage, &anError); 
    CFRelease(instantMessage); 

    ABMultiValueRef phone = ABRecordCopyValue(aContactFound, kABPersonPhoneProperty); 
    ABRecordSetValue(aRecord, kABPersonPhoneProperty, phone, &anError); 
    CFRelease(phone); 

    ABMultiValueRef email = ABRecordCopyValue(aContactFound, kABPersonEmailProperty); 
    ABRecordSetValue(aRecord, kABPersonEmailProperty, email, &anError); 
    CFRelease(email); 

    CFDataRef imageData = ABPersonCopyImageData(aContactFound); 
    ABPersonSetImageData(aRecord, imageData, &anError); 
    ABAddressBookSave(ab, &anError); 
    CFRelease(imageData); 

    ABUnknownPersonViewController *ABView = [[ABUnknownPersonViewController alloc] init]; 
    ABView.unknownPersonViewDelegate = self; 
    ABView.displayedPerson = aRecord; 
    ABView.allowsAddingToAddressBook = NO; 
    ABView.allowsActions = YES; 
    ABView.hidesBottomBarWhenPushed = YES; 

    [self.navigationController pushViewController:ABView animated:YES]; 

    [ABView release]; 

    CFRelease(aRecord); 

}else{ 
    //NSLog(@"doesn't exist"); 
    //sinon ouvre une fiche pré-remplie 

    ABRecordRef aRecord = ABPersonCreate(); 

    CFErrorRef anError = nil; 

    if(![myContact.firstname isEqualToString:@""]) ABRecordSetValue(aRecord, kABPersonFirstNameProperty, myContact.firstname, &anError); 

    if(![myContact.lastname isEqualToString:@""]) ABRecordSetValue(aRecord, kABPersonLastNameProperty, myContact.lastname, &anError); 

    if(![myContact.email isEqualToString:@""]) { 
     ABMultiValueRef ABemail = ABMultiValueCreateMutable(kABMultiStringPropertyType); 
     ABMultiValueAddValueAndLabel(ABemail, myContact.email, kABWorkLabel, NULL); 
     ABRecordSetValue(aRecord, kABPersonEmailProperty, ABemail, &anError); 
     CFRelease(ABemail); 
    } 

    if(![myContact.phone_business isEqualToString:@""] || ![myContact.phone_mobile isEqualToString:@""]){ 
     ABMultiValueRef ABphones = ABMultiValueCreateMutable(kABMultiStringPropertyType); 
     if(![myContact.phone_business isEqualToString:@""]) ([myContact.phone_business stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length == 4 || [myContact.phone_business stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length == 5) ? ABMultiValueAddValueAndLabel(ABphones, [NSString stringWithFormat:@"014443%@", myContact.phone_business], kABPersonPhoneMainLabel, NULL) : ABMultiValueAddValueAndLabel(ABphones, myContact.phone_business, kABPersonPhoneMainLabel, NULL); 
     if(![myContact.phone_mobile isEqualToString:@""] && ([myContact.phone_mobile stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length == 10)) ABMultiValueAddValueAndLabel(ABphones, myContact.phone_mobile, kABPersonPhoneMobileLabel, NULL); 
     ABRecordSetValue(aRecord, kABPersonPhoneProperty, ABphones, &anError); 
     CFRelease(ABphones); 
    } 

    if(![myContact.job isEqualToString:@""]) ABRecordSetValue(aRecord, kABPersonJobTitleProperty, myContact.job, &anError); 

    if(![myContact.msn isEqualToString:@""] || ![myContact.twitter isEqualToString:@""] || ![myContact.facebook isEqualToString:@""]){ 
     ABMultiValueRef ABmessaging = ABMultiValueCreateMutable(kABMultiDictionaryPropertyType); 
     NSMutableDictionary *dMessaging; 

     if(![myContact.msn isEqualToString:@""]){ 
      dMessaging = [[NSMutableDictionary alloc] init]; 
      [dMessaging setObject:myContact.msn forKey:(NSString *) kABPersonInstantMessageUsernameKey]; 
      [dMessaging setObject:@"MSN" forKey:(NSString *)kABPersonInstantMessageServiceKey]; 
      ABMultiValueAddValueAndLabel(ABmessaging, dMessaging, kABPersonInstantMessageServiceMSN, NULL); 
      [dMessaging release]; 
     } 

     if(![myContact.twitter isEqualToString:@""]){ 
      dMessaging = [[NSMutableDictionary alloc] init]; 
      [dMessaging setObject:myContact.twitter forKey:(NSString *) kABPersonInstantMessageUsernameKey]; 
      [dMessaging setObject:@"Twitter" forKey:(NSString *)kABPersonInstantMessageServiceKey]; 
      ABMultiValueAddValueAndLabel(ABmessaging, dMessaging, kABOtherLabel, NULL); 
      [dMessaging release]; 
     } 

     if(![myContact.facebook isEqualToString:@""]){ 
      dMessaging = [[NSMutableDictionary alloc] init]; 
      [dMessaging setObject:myContact.facebook forKey:(NSString *) kABPersonInstantMessageUsernameKey]; 
      [dMessaging setObject:@"Facebook" forKey:(NSString *)kABPersonInstantMessageServiceKey]; 
      ABMultiValueAddValueAndLabel(ABmessaging, dMessaging, kABOtherLabel, NULL); 
      [dMessaging release]; 

     } 


     ABRecordSetValue(aRecord, kABPersonInstantMessageProperty, ABmessaging, &anError); 
     CFRelease(ABmessaging); 
    } 

    //pas dans l'XMLToObjectParser parce que ça prenait une plombe... 
    NSURL *url = [NSURL URLWithString:myContact.picture_path]; 
    NSData *data = [NSData dataWithContentsOfURL:url]; 

    if(!data){ 
     NSString *picture_path = (![myContact.gender isEqualToString:@""]) ? [NSString stringWithFormat:@"default_%@_head.png", [myContact.gender lowercaseString]] : @"default_m_head.png"; 

     [myContact setPicture_path:picture_path]; 
     NSError *error = nil; 
     if(![self.managedObjectContext save:&error]){ 
      NSLog(@"pb lors de l'enregistrement de picture path"); 
     } 

     //NSData *localData = [NSData dataWithContentsOfFile:myContact.picture_path]; 
     UIImage *image = [UIImage imageNamed:picture_path]; 
     NSData *localData = UIImagePNGRepresentation(image); 

     CFDataRef cfLocalData = CFDataCreate(NULL, [localData bytes], [localData length]); 
     ABPersonSetImageData(aRecord, cfLocalData, &anError); 
     ABAddressBookSave(ab, &anError); 
     CFRelease(cfLocalData); 

    }else { 
     UIImage *image = [UIImage imageWithData:data]; 
     NSString *extension = [(NSArray*)[myContact.picture_path componentsSeparatedByString:@"."] objectAtIndex:1]; 

     NSData *localData = ([extension isEqualToString:@"png"]) ? UIImagePNGRepresentation(image) : UIImageJPEGRepresentation(image, 1.0f); 

     CFDataRef cfLocalData = CFDataCreate(NULL, [localData bytes], [localData length]); 
     ABPersonSetImageData(aRecord, cfLocalData, &anError); 
     ABAddressBookSave(ab, &anError); 
     CFRelease(cfLocalData); 
    } 

    if (anError != nil) { NSLog(@"error :: %@", anError); } 



    ABUnknownPersonViewController *ABView = [[ABUnknownPersonViewController alloc] init]; 
    ABView.unknownPersonViewDelegate = self; 
    ABView.displayedPerson = aRecord; 
    ABView.allowsAddingToAddressBook = YES; 
    ABView.allowsActions = YES; 
    ABView.hidesBottomBarWhenPushed = YES; 

    [self.navigationController pushViewController:ABView animated:YES]; 


    [ABView release]; 

    CFRelease(aRecord); 

} 
CFRelease(ab); 

Answer 1

첫째 :은 코어 재단 메모리 관리에 읽어. 아직 규칙을 마음으로 알지 못합니다.

둘째 :가 CF 친화적 인 기능은 이름에서 "복사"를 가질 때, 당신은 NULL위한 그것의 결과를 확인해야하며,이 NULL가 아니라면 완료되면 그 결과를 놓습니다. 그래서이 :이 CFRelease(first); 다음에 결코 경우

first = ABRecordCopyValue(person, kABPersonFirstNameProperty); 

메모리 누수가 될 것입니다.

셋째 : 코어 재단 값이 충돌합니다 CFRelease에 전달, NULL 경우 : firstname가

CFStringRef firstname = ABRecordCopyValue(aContactFound, kABPersonFirstNameProperty); 
ABRecordSetValue(aRecord, kABPersonFirstNameProperty, firstname, &anError); 
CFRelease(firstname); 

경우 NULL (그것이 될 수있는 - 단순히 "스미스"라는 이름의 접촉을 상상) 그때 충돌 은이됩니다.