(From the perspective of beginners, The Famous Teacher's Forum: The Classic of Android Development Practice systematically describes the technologies used in Android development with rich examples, cases, easy to understand languages and simple diagrams. The book is divided into 13 chapters, including understanding Android, building an Android development environment, learning about Activity, basic controls in Android (top), layout manager, Android event management, basic controls in Android (bottom), data storage, Android component communication, multimedia technology, mobile phone services, network communication, location services, etc. The Famous Teacher's Forum: The Classic of Android Development Practice provides many small examples, cases, and diagrams for readers to quickly understand and use. More than 50 hours of teaching videos and PPT electronic teaching plans are accompanied with the book. In addition, BBS forums are also provided for readers to answer questions. The author of The Famous Teacher's Forum: A Classic of Android Development Practice has many years of experience in development and teaching, and is willing to be a mentor to readers. This document includes the following annexes:)