Several UIAlertViews for a delegate

Tag the UIAlertViews like this:

#define kAlertViewOne 1
#define kAlertViewTwo 2

UIAlertView *alertView1 = [[UIAlertView alloc] init...
alertView1.tag = kAlertViewOne;

UIAlertView *alertView2 = [[UIAlertView alloc] init...
alertView2.tag = kAlertViewTwo;

and then differentiate between them in the delegate methods using these tags:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if(alertView.tag == kAlertViewOne) {
        // ...
    } else if(alertView.tag == kAlertViewTwo) {
        // ...
    }
}