(Video introduction. This video tutorial was carefully recorded by Li Huoming at the end of 2011 from the beginning of the original Android core basic course. It is more substantial and detailed than the previous Android course, but it does not include the Android core basic strengthening and Android project practice content of the 3G Android workshop for more than two months. Because there are more and more Android developers, the starting salary of Android developers has dropped, and software enterprises have increasingly high technical requirements for Android developers, so we can only go to find Andr by mastering the contents of this set of Android core basic courses)