Hello i have implemented the following NSAlert:

NSString *title = [NSString stringWithFormat:@"Keine Internetverbindung"];
        NSString *alertMessage = [NSString stringWithFormat:@"Es konnte keine Verbindung zu www.sip.de aufgebaut werden!"];
        NSString *ok = [NSString stringWithFormat:@"Ok"];               

        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage  delegate:self cancelButtonTitle:ok otherButtonTitles:nil];

        [alert show];
        [alert release];

and this is the delegate method to close the app:

- (void)alertView:(UIAlertView *)alertView didDisMissWithButtonIndex:(NSInteger)buttonIndex{
    exit(3);
}

But why the programm doesn't go into the method, what is my mistake?

greetings Marco