What is the max height a keyboard can be in iOS?

ios, ios8, iphone, uikeyboard

Solution

There is not limits. I'm tried to create keyboard wich have a height == 1000.0f px. and that has been success.

Problem

Now that iOS8 has introduced custom keyboards, what is the max height that a keyboard can be? Can it potentially take up the whole screen or is there a limit to the height?

Original source