How to add UIActivityIndicatorView to UIAlertView using ios7?

Question

I am trying to figure out how to create dialogs with a progress indicator on ios7.

In my old (running on ios6) code that I used:

// ... init alertview ...

indicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 55 + hlines, 30, 30)]; int height = self.frame.size.height + indicator.frame.size.height - 20; [alert addSubview:indicator]; indicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge; [indicator startAnimating]; [alert setFrame:CGRectMake(self.frame.origin.x, self.frame.origin.y, self.frame.size.width, height)]; 

Any idea?