Then set it to true again when TransitionToNext or TransitionToPrevious is called.
That does work with edits, but it does not work with any TTIWIPhoneButton
controls. I have a few of those in regions. They do not update in the PageTransition's Async events.
Unfortunately it's currently not supported to asynchronously toggle the Enabled property of a TIWIPhoneButton control.
However, this is a good suggestion and we'll consider adding this functionality in a future version.