Ios UIWebView URL截取

我试图在使用

UIWebView

时拦截URL更改。我当前打开了一个URL（）。但是，我想知道用户何时通过点击谷歌网页上的任何按钮来更改URL。然后，我想在加载新页面之前做一些事情

我试过：

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType

但是，当URL更改时，它似乎不会被调用。我在控制台中没有收到任何日志，即使返回的bool为“NO”，它也会加载页面

我也尝试过：

- (void)webViewDidStartLoad:(UIWebView *)webView

但是，该选择器似乎也没有被调用是否有人知道在加载新站点之前检测URL更改并执行某些操作的方法？我的代码如下：

@synthesize webView;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad {

    NSString *urlAddress = @"http://www.google.com";

    //Create a URL object.
    NSURL *url = [NSURL URLWithString:urlAddress];

    //URL Requst Object
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];

    //Load the request in the UIWebView.
    [webView loadRequest:requestObj];

    UIView *tabBar = [self.navigationController.view.superview viewWithTag:100];
    tabBar.hidden = YES;
    self.navigationController.view.frame = RECT_PERSONETICS_FRAME;

}

- (void)webViewDidFinishLoad {
    // Other stuff if necessary...

    // Could use hidden instead of enabled if you don't even want
    // the button to be visible
}

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

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
    // Release anything that's not essential, such as cached data
}

- (void)webViewDidStartLoad:(UIWebView *)webView
{
    NSLog(@"Webview URL: %@",[[[webView request] URL] absoluteString]);
}


- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    NSLog(@"New URL is: %@", request);
    return NO;
}

---

由于没有调用方法，我假设您可能没有在

viewController

中设置，或者

webview

出口设置不正确

您是否设置了webview的委托？你发布的代码中没有设置。哦，是的，这就是问题所在。真不敢相信我竟然忘了做那件事。谢谢