(This document is provided for Android Chinese compilation group The API translation work of Android started at the end of August 2010. With the release of the translated articles, more and more people from forums, incumbents, college students and graduate students participated in the translation work, unified the progress, improved the rules and regulations, and set up a non-profit open source translation team. As of September 21, 2011, a total of 300 translators had been recruited to contribute from time to time. In addition to translating the original text, we try our best to attach screenshots, links to relevant articles and sample code, enhance the readability of the translated text, and regularly produce collections in chm format. Welcome to join us!)