(Android Mobile Use Development from Introduction to Proficiency covers a comprehensive topic of Android development from concept, technology to commercial promotion and use, including 7 parts: Android overview, essence of Android user program design, essence of Android user interface design, commonly used Android APIs, more principles of Android user program design, and external release of your Android user program and appendix. The appendix also includes instructions for using common tools for Android development (such as emulators, DDMS, debugging bridges, SQLite, etc.). Android Mobile Application Development from Getting Started to Mastery is not only suitable for Android application developers to read, but also provides guidance for QA testers. Other Android Mobile Use Development from Getting Started to Mastery can also help project managers better manage project progress and project teams, help business promoters better master business and create impressive sales performance. This document includes the following annexes:)