4.5 Building the App’s GUI
In this section, you’ll build the Flag Quiz app’s user interface. In the two previous chapters, you saw how to create a GUI and configure component properties, so Sections 4.5.1–4.5.4 focus primarily on new features. Many of the component properties you need to set are specified in tables.
4.5.1 activity_main.xml Layout for Devices in Portrait Orientation
In the two prior apps, you defined the app’s GUI in activity_main.xml. When working with Fragments, an Actvity’s GUI typically displays one or more Fragments’ GUIs. In this app, the layout for MainActivity—activity_main.xml—uses an <include> element in the XML to include in MainActivity’s layout the GUI defined in content_main.xml. The content_main.xml layout, in ...
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