iOS + Android app development book recommendations?

[[)roi(]]

Codename one generates its own UI using OpenGL. It really is quite fast. The platform just isn't very mature.

Unity 3D does the same, with one exception; they only do this for games (a much easier task with openGL)

Adobe tried the same thing and failed; I doubt Codename One will be any different.

For cross platform development you're better off placing your bets on something like www.xamarin.com or http://www.apportable.com