Call 'action' on HTML web form in a UIWebView - iphone

Question

I'm trying to skip the login page of a website, so I can give the user a more aesthetically appealing login page, and save their login credentials for automatic login in the future. So far I have two UITextFields, and a UIButton. The user enters their username and password, and upon pressing the UIButton their details are entered into the actual webform on the sites login page, and the subsequent 'logged-in' page is shown in a UIWebView. The webView will be hidden while the app logs the user in, and then presented when the 'logged-in' page has loaded.
I've managed to populate the webform, but simply can't actually submit it! I'm sure there's a very simple solution!
This is the code I have so far, and if there's a better way I should be doing this let me know!
-(IBAction)login:(id)sender
{
// Create js strings
NSString *loadUsernameJS = [NSString stringWithFormat:#"var username = document.getElementsByName('username')[0]; username.value='%#';", username.text];
NSString *loadPasswordJS = [NSString stringWithFormat:#"var password = document.getElementsByName('password')[0]; password.value='%#';", password.text];
// Autofill the form - this works, and I can see the values being put into the webform
[self.webView stringByEvaluatingJavaScriptFromString: loadUsernameJS];
[self.webView stringByEvaluatingJavaScriptFromString: loadPasswordJS];
// This is the method I have tried to submit the form, but nothing happens (ct100 is the ID of the form).
[self.webView stringByEvaluatingJavaScriptFromString:#"document.ct100.submit();"];
}

Answer 1

Below Approach might be helpful to you
Put this code inside the didFinishLoading Method Of UIWebView Protocol
Fill The USerId
[webView stringByEvaluatingJavaScriptFromString:#"document.getElementById('username').value = 'userId'"];
Fill The Password
[webView stringByEvaluatingJavaScriptFromString:#"document.getElementById('password').value = 'password'"];
Call Submit Button as below
[webView
stringByEvaluatingJavaScriptFromString:#"document.forms['login_form'].submit();"];
Herelogin_form is the Name of You Form
Note: You have to manage one thing once you have filled the Credential clicked the Submit button. you need to make some BOOL or something else for avoiding the loading repetition of UIWebView.

Answer 2

Try:
[webView stringByEvaluatingJavaScriptFromString:#"document.getElementById(\"ct100\").submit()"];
Your view controller needs to implement the UIWebViewDelegate protocol and set itself as the UIWebView's delegate. Returning YES from webView:shouldStartLoadWithRequest (see code below) will allow the web view to navigate to any url the your form is submitting to.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSLog(#"Allow navigation to request = %#", request);
return YES;
}