([Introduction to Open Class] The first quarter of Android series courses: technical system and basic development technology - easy to get started and quickly master Android development technology, fast improvement, any mastery of Android technology system, and in-depth understanding and skillful use of commonly used technologies and key and difficult points in Android. The series of courses include: Android technology system and basic development technology - easy introduction (May 30)? The use method and high-end skills of multithreading in Android - in-depth understanding (June 6) of the principle, use method and optimization skills of the most important UI component, ListView - rapid improvement (June 20) of how to quickly and efficiently develop the use of Android - thorough understanding (June 27) of this course live broadcast)