webViewDidStartLoad方法被调用多次

头文件

UIWebView *itemWebView;

实现文件

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view from its nib. 
    itemWebView = [[UIWebView alloc] initWithFrame:self.view.bounds]; 
    itemWebView.delegate = self; 

    NSURL *url = [NSURL URLWithString:targetString]; 
    NSURLRequest *requestObject = [NSURLRequest requestWithURL:url]; 

    [itemWebView loadRequest:requestObject]; 
    [self.view addSubview:itemWebView]; 
    [itemWebView release]; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    return (interfaceOrientation == UIInterfaceOrientationPortrait); 
} 

- (BOOL) webView:(UIWebView *)_webView shouldStartLoadWithRequest: (NSURLRequest *) request navigationType:(UIWebViewNavigationType)navigationType { 
    NSLog(@"ItemLoadinglViewController - shouldStartLoadWithRequest"); 

    loadingView.hidden = NO; 
    itemWebView.hidden = YES; 
    return YES; 
} 

- (void) webViewDidStartLoad: (UIWebView *) _webView { 
    NSLog(@"ItemLoadinglViewController - webViewDidStartLoad"); 


} 

- (void) webViewDidFinishLoad: (UIWebView *) _webView { 
    NSLog(@"ItemLoadinglViewController - webViewDidFinishLoad"); 

    loadingView.hidden = YES; 
    itemWebView.hidden = NO; 

}

嗯，这是我的NSlog的样子：

ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - webViewDidFinishLoad 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - webViewDidFinishLoad 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - webViewDidFinishLoad 
ItemLoadinglViewController - shouldStartLoadWithRequest 
ItemLoadinglViewController - webViewDidStartLoad 
ItemLoadinglViewController - webViewDidFinishLoad

有没有人有任何想法为什么这些方法被调用多次？我用这个之前，但被称为每种方法只once.Why不同，这一次我不out.Thanks :)

编辑：

- (void) itemPressed:(id)sender{ 
    int x = [sender tag]; 

    ItemLoadingViewController *itemLoadingViewController = [[ItemLoadingViewController alloc] init]; 
    itemLoadingViewController.targetString = [target objectAtIndex:x]; 
    [self.navigationController pushViewController:itemLoadingViewController animated:YES]; 
    [itemLoadingViewController release]; 
}

来源

2011-11-02 adrian

你可以展示你如何加载视图控制器，它看起来像视图加载被称为多一次。 – shannoga

也有可能您的网址使用重定向？这可以解释为什么webview加载多次 – Zoleas

我编辑我的问题与code.please看看！ – adrian

从viewDidLoad中移动你的初始化代码初始化&检查。

来源

2012-03-02 12:49:07 Dee

webViewDidStartLoad方法被调用多次

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