objective-c - 潜在的泄漏问题

Question

当我构建并分析我的应用程序时，我在代码[array1 release]附近发现了潜在的泄漏...为什么它会发生在那里..？提前致谢

- (void) touchOnFeaturedCatalog
{
    searchId == 2;
    //featuredCatalogName = @"23064_Leeds2010";

    //NSString *response = [ZoomCatalogAppDelegate getResponseFromServer:[NSString stringWithFormat:@"http://www.zoomcatalog.com/iphone/iphone.php?catalog=%@&iphone=Yes&pdf=No", featuredCatalogName]]; 

    NSString *response = [ZoomCatalogAppDelegate getResponseFromServer:@"http://www.zoomcatalog.com/iphone/supplier.php"];
    //NSString *response = [ZoomCatalogAppDelegate getResponseFromServer:@"http://test.atvescape.com/articles.php"];
    //NSLog(@"Response = %@", response);
    NSArray *array = [response componentsSeparatedByString:@"##"];
    [array retain];

    for(int i = 0; i < array.count; i++)
    {
        NSLog(@"Trying outer loop.... %d, %@, %@", i, [array objectAtIndex:i], featuredCatalogName);
        NSArray *array4 = [featuredCatalogName componentsSeparatedByString:[array objectAtIndex:i]];
        if(array4.count > 1)
        {
            response = [ZoomCatalogAppDelegate getResponseFromServer:[NSString stringWithFormat:@"http://www.zoomcatalog.com/iphone/catalog_search.php?tid2=%@&iphone=yes", [array objectAtIndex:i]]]; 
            NSArray *array3= [response componentsSeparatedByString:@"<br>"];
            //baseURL = [NSString stringWithFormat:@"%@", [array3 objectAtIndex:0]];




            global_ContentString = [NSString stringWithFormat:@"%@", [array3 objectAtIndex:2]];//(searchId == 1 ? [array objectAtIndex:2] : ([array objectAtIndex: isLineNameSearch ? 2 :  1]))];
            [global_ContentString retain];  

        //  NSLog(@"baseURL = %@", global_ContentString);
            NSArray *array1 = [global_ContentString componentsSeparatedByString:@"@@#"];

            for(int j = 0; j < array1.count; j++)
            {
                NSArray *array2 = [[array1 objectAtIndex:j] componentsSeparatedByString:@"##"];         
                NSString *str = [NSString stringWithFormat:@"%@", [array2 objectAtIndex:0]];
                str = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
                if ([str caseInsensitiveCompare:featuredCatalogName] == NSOrderedSame)
                {

                    global_ContentString = [ZoomCatalogAppDelegate getResponseFromServer:[NSString stringWithFormat:@"http://www.zoomcatalog.com/iphone/iphone.php?catalog=%@&iphone=Yes&pdf=No", [array2 objectAtIndex:5]]]; 
                    baseURL = [NSString stringWithFormat:@"%@", [[global_ContentString componentsSeparatedByString:@"<br>"] objectAtIndex:0]];
                    //global_ContentString = [NSString stringWithFormat:@"%@", [[global_ContentString componentsSeparatedByString:@"<br>"] objectAtIndex:1]];
                    [global_ContentString retain];

                    [global_MainPageController presentModalViewController:global_FullPageController animated:YES];
                    //NSLog(@"$$$$$$$$$$$$$$$$$$$$$$ Catalog id = %@ $$$$$$$$$$$$$$$$$$$$$$$$$$", [array2 objectAtIndex:5]);
                    //[array1 release];memory leak
                    return;
                }
            //  NSLog(@"Trying inner loop.... %d, %@, %@", j, str, featuredCatalogName);

            }


        }

    //  if([[array objectAtIndex:i] com 
    }
    [array release];
    return;
}

对不起大家..

Answer 1

如果您仅在本地使用对象(在创建该对象的方法内)，则可以自动释放它。由便捷方法创建或返回的对象在函数调用结束之前可用。除非您在其他地方需要这些对象，否则我建议放弃 retain 调用。经验法则是，每当您调用 alloc、new、retain 或 copy 时，您都必须释放该对象。但是，如果您使用便捷方法，则返回的对象会为您自动生成。

您似乎调用了[global_ContentString keep];，但随后无法调用相应的版本。