1. Android Studio Hello World

2. Start/All Program/Android Studio/Android Studio

3. I do not have a previous version … OK

4. Lack of permissions Android Studio likes to update often.
You probably do not have the necessary permissions on the lab computers so avoid clicking on update.

5. Next. Maybe only the first user (me for the lab computers) sees this.

6. Next (again)

7. Finish

8. Finish (again)

9. Start a new Android Studio project

10. Name the application and click Next

11. Select a minimum SDK. Next.

12. Next

13. Choose an empty activity. Next

14. Finish

15. Close tip of the day

16. Click the Run App button (green arrow)

17. If there is a virtual device available choose it
If there is a virtual device available choose it. If not, click on create New Virtual Device

18. Next

19. Select a system image

20. Agree to license. Next.

21. Finish

22. Select image. Next.

23. Finish

24. OK

25. Install and continue

26. Finish

27. After closing the emulator and running again

28. Go to activity_main.xml (see res/layout)

29. Right click on “Hello world” TextView and select Cut.

30. Click ON the Auto Connect (U) button

31. Drag a button from the palette to the layout

32. Change the button’s id and text

33. Drag from the little circle on top to the top of the container and from the circle of the right and left edge to the side of the container

34. Result in Text View. Constraints are important in the ConstraintLayout

35. Drag a TextView onto the Layout

36. Change the TextView’s id and text

37. Apply the constraints – this time connect the top of the TextView to the bottom of the Button

38. Result

39. Additional property it asked for to eliminate red

40. Return to MainActivity – begin to instantiate a button object

41. Put mouse over Button (which was red) and click Alt-Enter
Put mouse over Button (which was red) and click Alt-Enter. Adds the import android.widget.Button

42. Start adding the button’s setOnClickListener method

43. Add required onClick method

44. Instantiate TextView object and use its setText method

45. Run
Problem you may find: if you did not take care of the constraints, the TextView and Button may be on top of one another.