Getting the rect of the rotated view in willAnimateFirstHalfOfRotationToInterfaceOrientation:duration:

Question

I am trying to animate between portrait and landscape orientations by hooking the various autorotation methods in UIViewController. Due to some subtleties of my view hierarchy, I'd like to set the frame of a child UIScrollView in the first half the animation and then scroll into position during the second half. This requires knowledge of the final, rotated frame of my view from within willAnimateFirstHalfOfRotationToInterfaceOrientation:duration:

The system must know this frame in order to perform the rotation animation, but is it accessible to UIViewController subclasses? If not, are my only options to hardcode the rotated frame or perform all layout in didRotateFromInterfaceOrientation...?

Thank you.

Answer 1

I somehow managed to overlook the willAnimateRotationToInterfaceOrientation:duration: callback. This resolved my issue, revealing a handful more. I will leave the question open in case someone else would like to elaborate on two-part rotation animation. EDIT: Closing, since no takers for days.