Question

Within UIWebView:shouldStartLoadWithRequest:, I’d like to know if the page being loaded is a local file or a remote file. Is there an easy way of finding this out?

I suppose every time a file is loaded I could search the filesystem looking for the file, but is there another way?

Answer 1

Yes it is possible. You should use a regular expression to test against the hostname. Local pages won’t match the regular expression.

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    static NSString *regexp = @"^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9-]*[a-zA-Z0-9])[.])+([A-Za-z]|[A-Za-z][A-Za-z0-9-]*[A-Za-z0-9])$";
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regexp];

    if ([predicate evaluateWithObject:request.URL.host]) {
        [[UIApplication sharedApplication] openURL:request.URL];
        return NO; 
    } else {
        return YES; 
    }
}