iPhone - SBJsonParser 的 Objective-C 内存泄漏

发布于 2024-10-17 16:41:02 字数 1520 浏览 0 评论 0原文

我使用 Xcode 中的“Leaks”工具不断收到以下内存泄漏信息。由于这是一个库，我只是想知道修复此类泄漏的最佳方法是什么。任何帮助将不胜感激。如果需要，我很乐意分享更多代码。

更新：我找到了这篇文章，它似乎没有希望。有人对如何解决这个问题有任何建议吗？

http://code.google.com/p/json- Framework/issues/detail?id=13

在此处输入图像描述

这就是我使用该库的方式。

- (void)getFacebookProfileFinished:(ASIHTTPRequest *)request {
    NSString *responseString = [request responseString];
    NSMutableDictionary *responseJSON = [responseString JSONValue]; //memory leak 100%   

    NSString *username;
    NSString *firstName = [responseJSON objectForKey:@"first_name"];
    NSString *lastName = [responseJSON objectForKey:@"last_name"];
    NSString *facebookId = [responseJSON objectForKey:@"id"];
    if (firstName && lastName) {
        username = [NSString stringWithFormat:@"%@ %@", firstName, lastName];
    } else {
        username = @"";
    }

    UIAppDelegate.userSessionId = facebookId;
    UIAppDelegate.userFullName = username;

    if (UIAppDelegate.userSessionId != nil) {
        Service1 *service = [[Service1 alloc] init];
        [service UserExists:self action:@selector(handlerUserExists:) facebookUserId:UIAppDelegate.userSessionId];
        [service release];
    } else {
        [Utility displayAlertMessage:@"There has been an error. Please try again later." withTitle:@"Error"];
        [self logoutCompletely];
    }
}

原文

I keep getting the following memory leak using the "Leaks" tool in Xcode. As this is a library, I'm just wondering what would be the best way to fix such a leak. Any help would be greatly appreciated. I am happy to share more code if needed.

UPDATE: I found this article, which doesn't seem promising. Has anyone got any suggestions as to how to fix this?

http://code.google.com/p/json-framework/issues/detail?id=13

enter image description here

This is how I'm using the library.

- (void)getFacebookProfileFinished:(ASIHTTPRequest *)request {
    NSString *responseString = [request responseString];
    NSMutableDictionary *responseJSON = [responseString JSONValue]; //memory leak 100%   

    NSString *username;
    NSString *firstName = [responseJSON objectForKey:@"first_name"];
    NSString *lastName = [responseJSON objectForKey:@"last_name"];
    NSString *facebookId = [responseJSON objectForKey:@"id"];
    if (firstName && lastName) {
        username = [NSString stringWithFormat:@"%@ %@", firstName, lastName];
    } else {
        username = @"";
    }

    UIAppDelegate.userSessionId = facebookId;
    UIAppDelegate.userFullName = username;

    if (UIAppDelegate.userSessionId != nil) {
        Service1 *service = [[Service1 alloc] init];
        [service UserExists:self action:@selector(handlerUserExists:) facebookUserId:UIAppDelegate.userSessionId];
        [service release];
    } else {
        [Utility displayAlertMessage:@"There has been an error. Please try again later." withTitle:@"Error"];
        [self logoutCompletely];
    }
}

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

未央 2024-10-24 16:41:02

通过注释掉 if 的主体（第 50 行），您已经使释放（第 51 行）成为有条件的。也注释掉 if（第 49 行）。

然而，话说回来，你以前的方法也有同样的问题，但显然没有警告，或者也许从未使用过？

回复收藏 0 原文

信仰 2024-10-24 16:41:02

正如CRD上面所说。您的 JSONFragmentValue 中也有同样的泄漏。这是一个正确的非泄漏版本。

- (id) JSONFragmentValue
{
    SBJasonParser *jsonParser = [SBJasonParser new];
    id repr = [jsonParser fragmentWithString:self];
    if (repr == nil)
    {
        NSLog(@"JSonFragmentValue failed:%@", [jsonParser ErrorTrace]);
    }
    [jsonparser release], jsonParser = nil;
    return repr;
}

或者如果您更喜欢自动释放池。

- (id) JSONFragmentValue
    {
        SBJasonParser *jsonParser = [SBJasonParser new] autorelease];
        id repr = [jsonParser fragmentWithString:self];
        if (repr == nil)
        {
            NSLog(@"JSonFragmentValue failed:%@", [jsonParser ErrorTrace]);
        }
        return repr;
    }

As CRD said above. You have the same leak in your JSONFragmentValue. Here is a correct non leaking version.

- (id) JSONFragmentValue
{
    SBJasonParser *jsonParser = [SBJasonParser new];
    id repr = [jsonParser fragmentWithString:self];
    if (repr == nil)
    {
        NSLog(@"JSonFragmentValue failed:%@", [jsonParser ErrorTrace]);
    }
    [jsonparser release], jsonParser = nil;
    return repr;
}

Or if you prefer autorelease pools.

- (id) JSONFragmentValue
    {
        SBJasonParser *jsonParser = [SBJasonParser new] autorelease];
        id repr = [jsonParser fragmentWithString:self];
        if (repr == nil)
        {
            NSLog(@"JSonFragmentValue failed:%@", [jsonParser ErrorTrace]);
        }
        return repr;
    }

回复收藏 0 原文

~没有更多了~