Most Android applications inevitably need some form of user interface. In this chapter, we discuss the user interface elements available within the Android SDK. Some of these elements display information to the user, whereas others are input controls that can be used to gather information from the user. In this chapter, you learn how to use a variety of common user interface controls to build different types of screens.
Before we go any further, we need to define a few terms to give you a better understanding of certain capabilities provided by the Android SDK before they are fully introduced. First, let’s talk about the
View and what it is to the Android SDK.