Pro Android with Kotlin: Developing Modern Mobile Apps with Kotlin and Jetpack

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

P. SpäthPro Android with Kotlinhttps://doi.org/10.1007/978-1-4842-8745-3_2

2. Application

Peter Späth¹  

(1)

Leipzig, Germany

 

An Android app consists of components like activities, services, broadcast receivers, and content providers. See Figure 2-1. Activities are for interacting with device users, services are for program parts that run without a dedicated user interface, broadcast receivers listen for standardized messages from other apps and components, and content providers allow other apps and components to access a certain amount and kind of data provided by a component.

The flow diagram of android OS with an app into APIs and android runtime.

Figure ...