(Features of this video: 1. The coverage of knowledge points in this video is the broadest and deepest in the market, from the beginning to the middle, to the end of a project. 2. This set of videos is highly hierarchical. It is not like other organizations that just put out the video in a literal way, so as to lift the appetite of learners. 3. This set of video highlights 1) Overview of Android; 2) Building of Android integrated development environment; 3) . Common UI controls; 4) , Android's LinearLayout, RelativeLayout, AbsoluteLayout, FarmeLayout, TableLayout and GridLayout; 5)、Activity、BroadcastReceiver、Service、ContentProvider; 6) . Thread communication; 7) Android network programming, sending and receiving data to the server; 8) IO programming for Android: including preferences, memory storage and SD card programming; 9) SQLite programming; 10) , JSON, PULL parsing; 11) Online examination project, including three-layer structure, simple factory mode, etc.)