1. Introduction
  2. Toasts
  3. Activity
  4. Dialogs
  5. Intent
  6. Android Life Cycle
  7. Menus
  8. Asynchronous Task
  9. Recycler-view
  10. Broadcast Receiver and Notification
  11. Shared Preferences
  12. Sqlite Database
  13. Alarm Manager
  14. Android Services
  15. Testing Activity
  16. Publishing Ap
  17. Appendix 1 & II