iPhone UIWebView becomeFirstResponder

Question

I have an UIWebView with an <input type="text"/> html element in it. I want to focus the input element in the html and show the keyboard on the iPhone programmatically, without tapping the screen.

I've tried the following:

• set the focus from JavaScript (in this case the onFocus JS event will fire but the keyboard won't show up)
• [webView becomeFirstresponder] (returns NO)
• set the first subview of the webView to be the firstResponder (returns NO)
• subclass UIWebView to return YES to canBecomeFirstResponder: (nothing happens)

I'm trying to find the solution since yesterday but I couldn't find it. Please help.

Answer 1

In iOS6 or above, you have to set keyboardDisplayRequiresUserAction to NO first:

- (void)webViewDidFinishLoad:(UIWebView *)webView 
{
    webView.keyboardDisplayRequiresUserAction = NO;
    [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"theElementId\").setFocus();"]; 
}