([Android development starts from scratch]. 1. Building an Android development environment. rar [Android development starts from scratch]. 2. Use of simulators. rar [Android development starts from scratch]. 3. The first Android program. rar [Android development starts from scratch]. 4. TextView control learning. rar [Android development starts from scratch]. 5. EditText control learning. rar [Android development starts from scratch]. 6. DDMS view and Button. rar [Android development starts from scratch]. 7. Content primary learning. rar [Android development starts from scratch]. 8. Activity life cycle. rar [Android development starts from scratch]. 9. Activity high-end learning. rar)