我编码如下，但我发现 webViewDidFinishLoad() 会发生若干次。

如何知道 webViewDidFinishLoad() 最后发生吗？

iNavigate = ;

- (void)webViewDidFinishLoad:(UIWebView *)webView

{    

    iNavigate ++;

    NSLog(@"Navigate Count = %d", iNavigate);

    if (iNavigate >)

    {

        CGRect rect = self.webView.frame;

        rect.size.height = rect.size.height - toolBarBrowser.frame.size.height;

        self.webView.frame = rect;

        self.toolBarBrowser.hidden = FALSE;

    }

    barButtonBack.enabled = (self.webView.canGoBack);

    barButtonForward.enabled = (self.webView.canGoForward);

}

//解决方法 1:

//您可以使用 (webview.isLoading) 来知道 UIWebView webViewDidFinishLoad 最后或发生不

- (void)webViewDidFinishLoad:(UIWebView *)webView{

    if (!webView.isLoading){

        [self ChickUrlIsDownload:myWebview.request.URL.absoluteString];

    }

    {

        [progress setProgress: animated:YES];

        [progress removeFromSuperview];

        progress=nil;

    }

    if ([myWebview canGoBack]) {

        [btn_back setSelected:YES];

    }else{

        [btn_back setSelected:NO];

    }

    [btn_back setEnabled:btn_back.selected];

    if ([myWebview canGoForward]) {

        [btn_go setSelected:YES];

    }else{

        [btn_go setSelected:NO];

    }

    [btn_go setEnabled:btn_go.selected];

    //获取到title

    NSString *title=[webView stringByEvaluatingJavaScriptFromString:@"document.title"];

    if (title.length>) {

        sel_title=[NSString stringWithFormat:@"%@%@",[title substringWithRange:NSMakeRange(,)],@"..."];

    }else{

        sel_title=title;

    }

    NSLog(@"_str_title=%@",sel_title);

}