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javascriptiosuiwebviewuiwebviewdelegate

Hiding elements from UIWebView

I have a UIWebView in which I load a NSURLRequest. I do not have full control over the html for the page shown but I do know it will contain an element which has an id I happen to know beforehand. Let's say it is submmit_form_button.

I don't want the user of the app to see this element. I want to hide it before it appears to the user in the UIWebView.

What is the best option to do that? Where in the controller that shows the UIWebView should I put the code that will solve this? I am aware that I can use Javascript for this. I am more concerned about how can I approach this in the context of a native iOS app that shows a UIWebView which gets it's html from an external source.

Solution

  • Following the lead from the comment by @Ric I solved the problem with

    - (void)webViewDidFinishLoad:(UIWebView *)webView {
    [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('submmit_form_button').style.display = 'none'"];
}