Self-Review Exercises

14.1. Fill in the blanks in each of the following statements:

a. A ListFragment is a Fragment containing a(n) __________.

b. A FragmentTransaction (package android.app) obtained from the __________ allows an Activity to add, remove and transition between Fragments.

c. We extend class AppWidgetProvider __________(package android.appwidget), a subclass of (package android.content), to create an app widget and allow it to receive notifications from the system when the app widget is enabled, disabled, deleted or updated.

d. You can force an item to appear in the ActionBar by using the always value of attribute __________ but you risk overlapping menu items by doing so.

14.2. State whether each of the following is true or false. If false, explain why.