([Introduction to Open Class] The second quarter of Android series courses: Multithread usage methods and high-end skills - in-depth understanding and rapid mastery of Android development technology, rapid improvement, any mastery of Android technology system, together with a deep understanding and skilled 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 of the principle, use method and optimization skills of the most important UI component ListView (June 6) - rapid improvement (June 20) of how to develop Android quickly and efficiently -)