(It is highly recommended to create an Android introductory tutorial. 1. Building Android development environment.rar2. Use of simulator.rar3. The first Android program. rar4. TextView control learning. rar5. EditText control learning. rar6. DDMS view and Button.rar7. Intent primary learning. rar8. Activity lifecycle. rar9. Activity advanced learning. rar10_ LinearLayout study. rar)