Long time lurker - first time poster!
I am having an issue while recreating a bar with a UITextView like WhatsApp does it.
UITextView
I am using a custom <
Unfortunately, iOS8 adds a private height constraint to the inputAccessoryView, and this constraint is not public.
I recommend recreating the accessory view when its frame should change, and call reloadInputViews so that the new one is installed.
This is what I do, and it works as expected.