webViewDidFinishLoad not calling when having javascript content in webpage

问题

I'm using UIWebView in a project. Sometimes it doesn't call the webViewDidFinishLoad method. Because the web page have some javascripts. The method

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

is getting call but webViewDidFinishLoad doesn't. I want to catch that method. Because I'm start an animation when the webview start loading. Then I want to stop this animation when it finished. It's not working with websites having javascript content. Any one have an idea please?

Thanks

回答1:

webViewDidFinishLoad method gets called when the UIWebView has finished loading the url, in your case since you are calling a javascript, it doesn't load your content, it just calls a javascript function in your already loaded webview. But YES you can catch the javascript actions in the same method you stated as below

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

    NSString *url = [[request URL] absoluteString];

    if(navigationType == UIWebViewNavigationTypeLinkClicked){

          if([url rangeOfString:@"SOMETHING"].length > 0 ){ 
             //if your action returns something appended in your url like the anchors work

                     //DO YOUR STUFFS       
          }
    }

    return TRUE;


}

回答2:

apparently, the webview in ios checks specifically for "iframe" tags in the html's dom and in case it finds, it creates events based on that tag as well. therefore, a simple however a patchy solution would be adding the following code in the part of the dom that is changing (for example, in the actual template of each section):

<iframe></iframe>

did the trick for me..

来源：https://stackoverflow.com/questions/16274059/webviewdidfinishload-not-calling-when-having-javascript-content-in-webpage