how to use javascript in uiwebview to get the clicked button id?

Question

This Time i want to know how to determine which button is click in UIWebView.....

    appDelegate.mystring = [[NSMutableString string]init];
    NSString *b         


        

Answer 1

The only method I know is by implementing webView:shouldStartLoadWithRequest:navigationType method of UIWebViewDelegate protocol. The required steps are as follows:

1) Create a new class subclassed from NSObject named, say, MyWebViewDelegate. You can implement only that method:

-(BOOL)webView:(UIWebView*)webView
       sholdStartLoadWithRequest:(NSURLRequest *)request
       navigationType:(UIWebViewNavigationType)navigationType
{
    NSLog(@"%@", [[request URL] relativePath]);
}

2) Create instance of delegate in your code and set it as a delegate of UIWebView before loading page:

MyWebViewDelegate *mydelegate = [[MyWebViewDelegate alloc] init];
mywebview.delegate = mydelegate;

3) And then try to debug. Try to put breakpoint inside ..sholdStartLoadWithRequest:.. method and ensure that you application stops in that breakpoint. Maybe you shold do a little redesign of you HTML webpage to achieve this. After that try to distinguish different buttons by value of request parameter.