Is there any mature form validation API / library for Android? I've found http://code.google.com/p/android-binding/ but it seems that is under heavy development.
UPDATE: Just to clarify my question. Currently, I have hardcoded form validation imperatively. And I would like to know, if there is a mature form validation library that allows me to declaratively specify validators (e.g. directly in XML or in code using annotations or by functional fluent way, ...).