Android How to Program, 3/e

9.14 Wrap-Up

In this chapter, you created an Address Book app for adding, viewing, editing and deleting contact information that’s stored in a SQLite database.

You used one activity to host all of the app’s Fragments. On a phone-sized device, you displayed one Fragment at a time. On a tablet, the activity displayed the Fragment containing the contact list, and you replaced that with Fragments for viewing, adding and editing contacts as necessary. You used the FragmentManager and FragmentTransactions to dynamically display Fragments. You used Android’s Fragment back stack to provide automatic support for Android’s back button. To communicate data between Fragments and the host activity, you defined in each Fragment subclass a nested interface ...