Some Googlers have a 20% project for a Traditional Chinese IME (Input Method Editor) on Android. Google announced today that this is now open sourced on Google Code.
They are still working on two features for it:
1. How to support English suggestions without duplicating LatinIME data.
2. How to map Zhuyin’s 41 keys onto the QWERTY 26-key layout for hardware keyboard.
It does include Zhuyin and Cangjie, two dominant input methods for Traditional Chinese users, Yuli Huang of Google’s Software Engineering Team says. “For people interested in building up a new input method over this project, see how ZhuyinIME and CangjieIME extend AbstractIME and create their respective Editor and WordDictionary subclasses to compose Traditional Chinese characters.”