Android Development with Kotlin: Crafting Native Android Apps.

Android Development with Kotlin: Crafting Native Android Apps" is a book that focuses on teaching developers how to create native Android applications using the Kotlin programming language. Kotlin is a modern programming language that has gained popularity in the Android development community due to its concise syntax, safety features, and seamless interoperability with Java.

The book likely covers a range of topics related to Android app development using Kotlin, including:

1. Introduction to Kotlin: An overview of the Kotlin programming language, its features, and why it's a good choice for Android development.

2. Setting Up the Development Environment: Instructions on how to set up the Android development environment, including installing Android Studio, the official IDE for Android development.

3. Basic UI Design: How to create user interfaces using XML layout files and how to interact with UI elements programmatically using Kotlin code.

4. Activities and Fragments: Explaining the concepts of activities and fragments, the building blocks of Android applications, and how to manage the user interface and user interactions.

5. Navigation: How to implement navigation within the app, including using the Navigation component to manage fragment transitions and backstack.

6. Working with Data: How to store and retrieve data using local storage options like SharedPreferences, SQLite databases, and how to interact with RESTful APIs to fetch and display data from the internet.

7. UI Components: Exploring various UI components like RecyclerViews for displaying lists of data, CardViews for styling, and handling user input through buttons, text fields, etc.

8. Material Design: Incorporating Google's Material Design guidelines to create visually appealing and consistent user interfaces.

9. Handling User Input: Managing user input, including handling touch events, gestures, and input validation.

10. Debugging and Testing: Techniques for debugging and testing Android applications to ensure they are robust and free of errors.

11. Publishing Apps: Guidance on preparing and publishing apps to the Google Play Store, including considerations for app signing, optimizing app performance, and writing effective app descriptions.

12. Advanced Topics: Depending on the book's depth, it might cover more advanced topics like animations, background processing, working with sensors, and integrating third-party libraries.

Remember that the specific content of the book might vary, but generally, it aims to provide a comprehensive guide for beginners and intermediate developers to build native Android apps using the Kotlin programming language. It's a good resource for individuals looking to get started with Android development or transition from Java to Kotlin for Android app development.