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    <p>Here's a quick example of a simple implementation that can get you started.</p> <h2>example.html</h2> <pre><code>&lt;script type="text/javacript"&gt; function populateField(fieldId, fieldText) { $('#' + fieldId).val(fieldText); } var bridgeScheme = 'myapp'; (function($) { $('#my-textfield').on('focus', function() { var data = { 'action': 'focus', 'field-id': $(this).attr('id') }; var encodedData = encodeURIComponent(JSON.stringify(data)); $('#iframe').attr('src', bridgeScheme + encodedData); }); })(jQuery) &lt;/script&gt; &lt;form id="my-form"&gt; &lt;div&gt; &lt;input type="text" id="my-textfield"&gt; &lt;/div&gt; &lt;/form&gt; &lt;iframe src="" id="iframe"&gt;&lt;/iframe&gt; </code></pre> <p>A few things:</p> <ul> <li>The <code>iframe</code> is used to generate a request which will go through the <code>UIWebView</code>. We will be able to capture it by implementing <code>UIWebViewDelegate</code> in the controller (see after)</li> <li>The <code>bridgeScheme</code> variable is how you'll be able to detect that a request is coming from your own javascript code (see after)</li> <li>The <code>populateField</code> javascript function will be called from the native side to populate the text field with whatever value you want</li> </ul> <hr> <h2>ExampleViewController.m</h2> <pre><code>- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { // This needs to be the same value as used in the javascript NSString *bridgeScheme = @"myapp"; // That's where we capture the request if the request's scheme matches if ([request.URL.scheme isEqualToString:bridgeScheme]) { // Extract the part of the request url that contains the data we need NSString *dataString = [request.URL.absoluteString substringFromIndex:bridgeScheme.length + 1]; // The data was URL encoded dataString = [dataString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; // Here we transform the JSON string into a JSON object (dictionary) NSData *data = [dataString dataUsingEncoding:NSUTF8StringEncoding]; NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; // Extract the field id from the dictionary NSString *fieldId = dataDictionary[@"field-id"]; // Call the javascript method on the webview NSString *populateFieldJS = [NSString stringWithFormat:@"populateField('%@', '%@')", fieldId, @"Whatever text you want to put in there"]; [webView stringByEvaluatingJavaScriptFromString:populateFieldJS]; return NO; } return YES; } </code></pre> <p>Hope it helps!</p>
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    1. POFind input elementID of the input field that the user has selected
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    1. USSylvain Guillopé
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