[ACCEPTED]-UITransitionView and UILayoutContainerView-iphone
They are both internal views used by Apple 12 and not published in the SDK.
It's difficult 11 to say exactly what Apple will or won't 10 do however, adding a view to an undocumented 9 view you retrieve from a superView message 8 is not contentious. What you should not 7 do (or be careful if you do do) is make 6 assumptions about the view you are adding 5 to. Specifically its class but even basic 4 things like the fact that it even exists.
What 3 are you trying to do? There may be a simpler 2 way - like adding your view directly to 1 the app's UIWindow.
Directly doing anything with those views 3 goes against the SDK guidelines of not using 2 undocumented APIs. So, sadly, it doesn't 1 matter much what they do.
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