They are instantiated by the Android operating system (OS) as needed. The Four Possible Components of an Android ApplicationĮvery application is made up of one or more of these components. These functionalities can be classified into four different Android components, shown in Table 2.1, each of which is specified by a Java base class. Some examples are editing a note, playing a music file, ringing an alarm, or opening a phone contact. Android Application OverviewĪn Android application consists of various functionalities. Then the focus of this chapter turns to activities and the intents that launch them. An overview of the project structure, including a brief introduction to the basic building blocks of an application, is provided as useful background information for the recipes in this book. Android Developer's Cookbook, The: Building Applications with the Android SDK: Building Applications with the Android SDKĮach Android application is represented by a single Android project.
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