Chapter 1 Your First Android Application
Previewing the layout
Your layout is now complete, and you can preview the layout in the graphical layout tool (Figure 1.12).
First, make sure that your files are error free. Then return to activity_quiz.xml and open the preview
tool window (if it is not already open) using the tab to the right of the editor.
Figure 1.12 Previewing activity_quiz.xml in graphical layout tool