UIWebView泄漏

问题描述

| 我有一个扩展UIViewController并实现UIWebViewDelegate的类，如下所示：

@interface TableViewController : UIViewController <UIWebViewDelegate,UIAlertViewDelegate>{
    UIWebView *articleWebView;
    NSString *link;
    UIActivityIndicatorView *activityIndicator;
    NSURL * safariUrl;
}

我正在尝试将网页加载到uiwebview中，一切正常，但是我遇到了一些泄漏（例如GeneralBlock-56，GeneralBlock-1024等），我无法找到它们的来源。 这就是我在做什么：

- (void)viewDidLoad {
[super viewDidLoad];

if (articleWebView){
    [articleWebView loadHTMLString: @\"\" baseURL: nil];
    [articleWebView release];
    articleWebView = nil;
}

articleWebView = [[UIWebView alloc] initWithFrame: CGRectMake(0,320,380)];
if (activityIndicator){

    [activityIndicator release];
    activityIndicator = nil;
}
activityIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(self.view.bounds.size.width/2-24,self.view.bounds.size.height/3-12,50,50)];
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
[self.view addSubview:activityIndicator];


link = [link stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
link = [link stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]];
link = [(NSString*) CFURLCreateStringByAddingPercentEscapes (NULL,(CFStringRef)link,NULL,kCFStringEncodingUTF8) autorelease];


NSURL *url = [NSURL URLWithString:link];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];   

[[self articleWebView] setDelegate: self];

[articleWebView loadRequest:requestObj];

[link release];

}

//////////////////////////////////////////////
-(void)webViewDidFinishLoad:(UIWebView *)webView{
if (activityIndicator){
    [activityIndicator stopAnimating];
    [activityIndicator release];
    activityIndicator = nil;
    self.view = articleWebView;

}
//////////////////////////////////////////////
- (void)viewDidUnload {
    [super viewDidUnload];
    [articleWebView loadHTMLString: @\"\" baseURL: nil];
    [self.articleWebView release];
    self.articleWebView = nil;
}
//////////////////////////////////////////////
- (void)dealloc {
    self.articleWebView.delegate=nil;
    [super dealloc];
}

我究竟做错了什么？先感谢您。     

解决方法

除了将webView委托设置为nil之外，您还应该要求webView停止加载。添加以下代码行，然后尝试：

- (void)dealloc {
    self.articleWebView.delegate = nil;
    [articleWebView stopLoading];
    [articleWebView release];
    [super dealloc];
}

    ,如果

articeWebview

是an4ѭ，为什么要want5 want呢？