Question

I want to start an activity indicator whenever the user presses any link on a webview.

Answer 1

First assign the ViewController which the UIWebView appears in as its delegate: Do this either by control-dragging from the UIWebView to the File’s Owner object in InterfaceBuilder or in code:

[myWebView setDelegate:myViewController];

Then in your ViewController.m file you can now use the delegate methods to detect when pages are being loaded. These delegate methods will be triggered every time a link or new page is loaded in the UIWebView.

- (void)webViewDidStartLoad:(UIWebView *)webView {
     [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
     [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
     [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
}