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copied!<p>As you need to read JSON only, then read it by:</p> <pre><code>NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *fullPath = [[paths lastObject] stringByAppendingPathComponent:@"myJson.json"]; NSData *jsonData = [[NSFileManager defaultManager] contentsAtPath:fullPath]; </code></pre> <p>then parse it to nsdictionary:</p> <pre><code>id jsonDict = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:nil]; </code></pre> <p>Updated Again: If you want to call obj c from javascript, you need to define a specific URL like:</p> <pre><code>http://abc.com/?key=value </code></pre> <p>Then call it from js:</p> <pre><code>function callObjC(){ location.href='http://abc.com/?key=value'; } </code></pre> <p>Then in shouldStartLoadWithRequest, compare the request's url and the specific URL, it they are the same then do your function.</p> <pre><code>- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { if ([[[request URL] absoluteString] hasPrefix:@"http://abc.com/"]) { //comparing urls, if almost the same //if you need to pass parameters to Obj C, put them in the URL as my example and explode yourself [self anotherMethod];//your method return NO;//skip the request, as the link is not valid or we don't want to change the webview } return YES; } </code></pre> <p>Your <a href="http://blog.techno-barje.fr/post/2010/10/06/UIWebView-secrets-part3-How-to-properly-call-ObjectiveC-from-Javascript/" rel="nofollow">link provided</a>, it uses a self-defined protocol: js-call rather than http. It works, but Apple do not recommend it.</p>

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