Question

I have an iPhone app which sends an email. If the “To:” address is not set, I display an Alert (UIAlertView). At the present time, I do not check for the user tapping OK, I just go on my merry way! 😀

I am getting the following error when tapping OK on the Alert:

wait_fences: failed to receive reply: 10004003

I believe it’s because I don’t handle the tapping of OK and it’s still showing when the app is doing something else. So, after doing some research on SO and Google, it appears I have to have this:

- (void) Alert: (NSString *) title andData: (NSString *) errorMsg  {

    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle: title
                          message: errorMsg 
                          delegate:nil
                          cancelButtonTitle: @"OK"
                          otherButtonTitles: nil];
    [alert show];


    return;

}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    NSLog(@"button was pressed");
}

My problem is that I can’t figure out how to set up the delegate for this. I already have a delegate:

@interface ReportViewController : UIViewController <UIWebViewDelegate>  {

How do I set the delegate so the tap of the OK button is handled, thus removing the error?

Answer 1

Inside the angle brackets, you can provide a comma-separated list of protocols.

@interface ReportViewController : UIViewController <UIWebViewDelegate, UIAlertViewDelegate>  {

Now you can implement both sets of methods. And don’t forget to set the alert view’s delegate to self.