This book, fully updated for Android Studio Meerkat and the new UI, teaches you how to develop Androidbasedapplications using Kotlin.Beginning with the basics, the book outlines how to set up an Android development and testing environment,followed by an introduction to programming in Kotlin, including data types, control flow, functions, lambdas,and object-oriented programming. Asynchronous programming using Kotlin coroutines and flow is alsocovered in detail.Chapters also cover the Android Architecture Components, including view models, lifecycle management,Room database access, content providers, the Database Inspector, app navigation, live data, and data binding.More advanced topics, such as intents, are also covered, such as touchscreen handling, gesture recognition, andthe recording and playback of audio. This book edition also covers printing, transitions, and foldable devicesupport.The concepts of material design are also covered in detail, including the use of floating action buttons, Snackbars,tabbed interfaces, card views, navigation drawers, and collapsing toolbars.Other key features of Android Studio and Android are also covered in detail, including the Layout Editor,the ConstraintLayout and ConstraintSet classes, view binding, constraint chains, barriers, and direct replynotifications.Chapters also cover advanced features of Android Studio, such as Gradle build configuration, in-app billing, andsubmitting apps to the Google Play Developer Console.Assuming you already have some programming experience, are ready to download Android Studio and theAndroid SDK, have access to a Windows, Mac, or Linux system, and have ideas for some apps to develop, youare ready to get started.