Identify submit button click of UIWebview

Question

I have a UIWebView page with multiple button . Need to identify which button is clicked of the UIWebView.

Page source for UIWebview load contents:

        <form action="settings_personal.php" data-ajax="false" method="post">   
            <input type="submit" name ="btn_settings_personal" value=" Goals (Personal data) " data-icon="star" data-theme="g" />
        </form> 

        <form action="settings_global.php" data-ajax="false" method="post"> 
            <input type="submit" name ="btn_settings_global" value=" Settings " data-icon="gear" data-theme="g" />
        </form>
        <form action="" data-ajax="false" method="post">    
            <input type="submit" name ="btn_web_access" value=" Web Plattform Access " data-icon="plus" data-theme="h" />
        </form>     

I need to identify button clicked for 'btn_web_access' named button ???

I have implemented following :

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType{

 NSString* clicked = [self.webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('btn_web_access').click();"];

    NSLog(@"CLICK %@",clicked);

}

but its of no use..Thanks in advance.

Answer 1

Just use the request's URL attribute to distinguish the load request's target:

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType{

    NSLog(@"url: %@", [[request URL] absoluteString]);

    return YES;

}

Based on the URL being called, you know which button (or even any link) of your currently shown webpage was clicked. Then take the action being needed and don't forget to return a BOOL value indicating wether or not to actually load the requested URL.

In Swift you might have

func webView(webView:UIWebView,
          shouldStartLoadWithRequest request:NSURLRequest,
          navigationType:UIWebViewNavigationType) -> Bool
    {
    if (navigationType == .FormSubmitted)
        {
        print("was the 'submit' form")
        }

    let u = request.mainDocumentURL
    print("local or remote url was " ,u)

    return true // allow the form to in fact send the form
    }

Answer 2

Do this with HTML Code

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:
    (NSURLRequest *)request navigationType: 
    (UIWebViewNavigationType)navigationType {
        if ([request.URL.scheme isEqualToString:@"inapp"]) {
            if ([request.URL.host isEqualToString:@"capture"]) {
            // do capture action
        }  
        return NO;
     }  

   return YES;
}