Android How to Program, 3/e

9.1 Introduction

The Address Book app (Fig. 9.1) provides convenient access to contact information that’s stored in a SQLite database on the device. You can:

Fig. 9.1 Contact list and a selected contact’s details

Figure 9.1 Full Alternative Text

• scroll through an alphabetical contact list

• view a contact’s details by touching a contact’s name in the contact list

• add new contacts

• edit or delete existing contacts.

The app provides a separate tablet layout (Fig. 9.2) that always displays the contact list in one third of the screen and uses the screen’s remaining two thirds to display either the selected contact’s data or the screen for adding and ...