IOS UIWebView泄漏

Question

IOS UIWebView泄漏

And*_*dei 5 memory memory-leaks uiwebview ios

你好我有一个UIWebView泄漏内存问题基本上我有我的WebView显示页面,链接在另一个控制器的UITableView中.我用带有导航器的WebView推送控制器,并将带有retain属性的链接传递给它.

我尝试过互联网上的所有内容,例如:

[[NSUserDefaults standardUserDefaults] setInteger:0 forKey:@"WebKitCacheModelPreferenceKey"];

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//Clear cache of UIWebView
NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:0 diskCapacity:0 diskPath:nil];
[NSURLCache setSharedURLCache:sharedCache];
[sharedCache release];
sharedCache = nil;
[[NSURLCache sharedURLCache] removeAllCachedResponses];

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这是我的代码:

-(void) viewWillAppear:(BOOL) animated
{
    NSMutableURLRequest *_req=[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:link] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:120];

    [_req setHTTPShouldHandleCookies:NO];
    [self setMyRequest:_req];
    [req release];
}

[webView loadRequest:myRequest];

-(void) viewWillDisappear:(BOOL) Animated
{
    [webView stopLoading];
    [webView loadHTMLString:@"<html></html>" baseURL:nil];
}

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- (void)dealloc {
    [myRequest release];
    [webView stopLoading];
    [webView release];
    [link release];
    [super dealloc];
}

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现在我只在模拟器4.2和4.3上测试,我使用xcode 4,当我点击导航器上的后退按钮时,我得到了这个泄漏.

这是我的tableview控制器的代码

- (void)viewDidLoad {
    webViewController=[[ItemDetail alloc] initWithNibName:@"ItemDetail" bundle:[NSBundle mainBundle] ];

    [super viewDidLoad];
}


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    webViewController.link=http://www.myLink.com;
    [self.navigationController pushViewController:webViewController animated:YES];

}

-(void) dealloc
{
    [webViewController release];
    ...
    ...
    [super dealloc];
}

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这是一个屏幕链接:http://postimage.org/image/368r0g0xw/

任何帮助将不胜感激,谢谢

Answer 1

And*_*dei 1

-(void) viewWillAppear:(BOOL) Animated
{
    //CONNECTION INIT
    [web setDelegate:self];

    NSURL *url=[[NSURL alloc] initWithString:link];

    NSURLRequest *_req=[[NSURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:120];

    [self setReq:_req];

     [_req release];
     [url release];
    [web loadRequest:req];


}

-(void) viewWillDisappear:(BOOL) Animated
{
    [self setReq:nil];
    if ([web isLoading])
    [web stopLoading];
    [web setDelegate:nil];
}

- (void)dealloc {
    [req release];
    [map release];
    [web setDelegate:nil];
    [web release];
    [link release];
    [super dealloc];
}

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现在我在返回表视图后释放它，释放它后它仍然留下大约 3 mb，但是现在当我再次创建视图并再次释放它时，这 3 mb 没有改变。诡异的...

Item Detail *webViewController=[[ItemDetail alloc] initWithNibName:@"ItemDetail" bundle:[NSBundle mainBundle] ];


    [self.navigationController pushViewController:webViewController animated:YES];
    [webViewController release];

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