There are a number of methods of UIView that allow you to modify the view hierarchy.
bringSubviewToFront:sendSubviewToBack:insertSubview:atIndex:insertSubview:aboveSubview:insertSubview:belowSubview:exchangeSubviewAtIndex:withSubviewAtIndex:
Since your views are already inserted into your superview, you could easily call bringSubviewToFront: once for each view in whatever order you like.