Classical computer science classes often define a program in terms of functionality and data, and Android applications are no different. They perform tasks, display information to the screen, and act upon data from a variety of sources.
Developing Android applications for mobile devices with limited resources requires a thorough understanding of the application lifecycle. Android also uses its own terminology for these application building blocks—terms such as
View. This chapter familiarizes you with the different components of Android applications and how to configure the important file every Android application must include, the Android Manifest file.