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    <p>Yes, there is a way to bridge javascript from a UIWebView to Obj-C code.</p> <p>Set your UIWebView delegate, and in your delegate paste in the following method</p> <pre><code>// // Map links starting with file:// // ending with #action // with the action of the controller if it exists. // // Open other links in Safari. - (BOOL)webView: (UIWebView*)webView shouldStartLoadWithRequest: (NSURLRequest*)request navigationType: (UIWebViewNavigationType)navigationType { NSString *fragment, *scheme; if (navigationType == UIWebViewNavigationTypeLinkClicked) { [webView stopLoading]; fragment = [[request URL] fragment]; scheme = [[request URL] scheme]; if ([scheme isEqualToString: @"file"] &amp;&amp; [self respondsToSelector: NSSelectorFromString(fragment)]) { [self performSelector: NSSelectorFromString(fragment)]; return NO; } [[UIApplication sharedApplication] openURL: [request URL]]; } return YES; } </code></pre> <p>Then you can write Obj-C methods that'll handle the request. For example. In your webview you might have a button that has a link tag like</p> <pre><code>&lt;a href="file://myGreatApp.com/saveImage"&gt;Click Me to Save Image &lt;/a&gt; </code></pre> <p>The scheme is "file" the fragment is "saveImage". You can now write an Obj-C method</p> <pre><code>-(void)saveImage; </code></pre> <p>That will be called every time a user clicks on the link.</p> <p><strong>Edit:</strong> If you want to pass string parameters in your method, simply append them to your fragment url using javascript. So instead you might have</p> <pre><code>&lt;a href="file://myGreatApp.com/saveImage*asdgo8asdgl35lkjasgd807ll12"&gt;Click Me to Save Image &lt;/a&gt; </code></pre> <p>Then in your Obj-C code, split the fragment on the char '*'. Use the first half as your selector and the second half as the parameter.</p>
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    1. POHow to save image to Photo gallery using JavaScript/Obj-C on iPad?
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    1. POHow to save image to Photo gallery using JavaScript/Obj-C on iPad?
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    1. COAny idea how to pass the data (just a string really) from the JS app to Obj-C? I might be missing the point here. Thanks for the answer, though. :)
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      1. USJuho Vepsäläinen
    2. COUse a char separator and append it to your fragment. So use javascript to dynamically make your link href file://myGreatApp.com/saveImage*imgdataimgdataimgdataimgdata. Then in the obj c code, you'd split fragment by '*'. The first half becomes your selector 'saveImage' while the second half becomes the string object you pass in the selector.
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    3. COI ended up using this solution, http://blog.techno-barje.fr/post/2010/10/06/UIWebView-secrets-part3-How-to-properly-call-ObjectiveC-from-Javascript .
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