用处初学者开发android程序所写的一本书，是用第一人称视角以一个菜鸟和一个老鸟的对话来展开一系列问题和解答，引领大家对android的学习。-Useful for beginners develop android program written a book, is a first person perspective to a rookie and an old bird dialogue to commence a series of questions and answers, leading everyone to learn on android.