1. Chapter 2 Building User Interfaces and Basic Applications

2. Figure 02.01: Standard Layout Types

3. Figure 02.02: RelativeLayout elements are positioned relative to each other

4. Figure 02.03: A GridLayout has two orientations

5. Figure 02.04: FrameLayouts contain a single control object, such as a canvas or list

6. Figure 02.05: Soft keyboards can be altered during stages of input

7. Figure 02.06: A soft keyboard configured for the input of an email address

8. Figure 02.07: A soft keyboard configured for password input

9. Figure 02.08: Android supports multiple soft keyboard configurations

10. Figure 02.09: Text AutoComplete will produce dictionary-based suggestions during input

11. Figure 02.10: The Search icon appears when you declare android:imeOptions=”actionSearch.”

12. Figure 02.11: The Shipping Cost Calculator is partially conceptualized in a sketched prototype

13. Figure 02.12: The final project structure for the Shipping Calculator app

14. Figure 02.13: View objects arranged in the Layout Editor’s Design mode

15. Figure 02.14: Widgets are subclasses of the View base class

16. Figure 02.15:

17. Figure 02.16: Switch and TobbleButton widgets

18. Figure 02.17: CheckBox, Seekbar, Switch, and Button widgets arranged in a LinearLayout

19. Figure 02.18: A Spinner widget displays values from a set

20. Figure 02.19: View objects can be organized in ViewGroup containers.

21. Figure 02.20: A RadioGroup is a ViewGroup that contains RadioButton widgets

22. Figure 02.21: The Burger Calorie Calculator App and its View Structure

23. Figure 02.22: The final project structure for the Burger Calorie Counter app

24. Figure 02.23: activity_my.xml layout design

25. Figure 02.24: Sample contents of R.java showing generated-resource identifiers

26. Figure 02.25: Adaptive Design is used to display different content for different screens

27. Figure 02.26: Many versions of activity_my.xml can be used by an application

28. Figure 02.27: The Shipping Cost app reconceptualized in portrait and landscape orientations

29. Figure 02.28: Additional layout directories can be used to store different configurations of a user interface

30. Figure 02.29: Computed output values are organized in a separate ViewGroup container in res/ layout/activity_my.xml

31. Figure 02.30: A LinearLayout is added to res/layout-land/activity_my.xml to group elements related to weight input

32. Figure 02.31: A TableLayout built in Java

33. Figure 02.32: The Calculator running in an AVD designed for a small device

34. Figure 02.33: The project structure for the Calculator application

35. Figure 02.34: The Layout design, activity_my.xml, for the Calculator application

36. Figure 02.35: The display component of the calculator spans across four cells

37. Figure 02.36: The second row of the Calculator contains the AC, %, and / buttons

38. Figure 02.37: The buttons in the 3rd, 4th, and 5th rows are of equal size

39. Figure 02.38: The final TableRow of the TableLayout contains two Buttons

40. Figure 02.39: A SimpleExpression object is defined by two operands and an operator

41. Figure 02.40: ViewGroup Containers

42. Figure 02.41: The Renaissance Paintings App contains clickable paintings that scroll horizontally

43. Figure 02.42: Project Structure for the Renaissance application

44. Figure 02.43: The layout structure for activity_my.xml