Add UIActivityIndicatorView or UIProgressView to UIAlertView

custom_alert_view.m

// display the alert view
- (void)createProgressionAlertWithTitle:(NSString *)title message:(NSString *)message andIsActivity:(BOOL)isActivity
{
	UIAlertView *progressAlert = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:nil otherButtonTitles:nil];
	
	// Create the progress bar and add it to the alert
	if (isActivity) 
	{
		UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
		activityView.frame = CGRectMake(139.0f-18.0f, 60.0f, 37.0f, 37.0f);
		[progressAlert addSubview:activityView];
		[activityView startAnimating];
	} else 
	{
		UIProgressView *progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(30.0f, 80.0f, 225.0f, 90.0f)];
		[progressAlert addSubview:progressView];
		[progressView setProgressViewStyle: UIProgressViewStyleBar];
	}
	
	[progressAlert show];
        [progressAlert release];
}

// dismiss the alert view 
- (void)dismissProgressAlert {
	[progressAlert dismissWithClickedButtonIndex:0 animated:YES];
}