Android™ How to Program, Second Edition

8.4.2. Creating the App’s Classes

This app consists of five classes:

• Class MainActivity (Section 8.5) manages the app’s fragments and coordinates the interactions between them.

• Class ContactListFragment (Section 8.6) is a subclass of ListFragment that displays the contacts’ names and provides a menu item for adding a new contact.

• Class AddEditFragment (Section 8.7) is a subclass of Fragment that provides a GUI for adding a new contact or editing an existing one.

• Class DetailsFragment (Section 8.8) is a subclass of Fragment that displays one contact’s data and provides menu items for editing and deleting that contact.

• Class DatabaseConnector (Section 8.9) is a subclass of Object that manages this app’s interactions with a SQLite database. ...