addSubview in UIAlertView deprecated in iOS7

There is a solution....

UIAlertView *alertView;

//a simple alert view with a simple message:

alertView = [[UIAlertView alloc]initWithTitle:nil message:@"My message here..." delegate:self cancelButtonTitle:nil otherButtonTitles:nil];

    

//a simple activity indicator:

UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

activityIndicator.frame= CGRectMake(50, 10, 37, 37);

activityIndicator.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin;    

[activityIndicator startAnimating];

//the magic line below,   

//we associate the activity indicator to the alert view: (addSubview is not used)

[alertView setValue:activityIndicator forKey:@"accessoryView"];

    

[alertView show];