Android 9 Libro

Apogeo

Android 9. Guida completa per lo sviluppo di applicazione mobile

Android 9编程通俗演义                                  

Independently published

Android Studio 3.3 Development Essentials - Android 9 Edition: Developing Android 9 Apps Using Android Studio 3.3, Java and Android Jetpack

Packt Publishing

Android 9 Development Cookbook: Over 100 recipes and solutions to solve the most common problems faced by Android developers, 3rd Edition (English Edition)

Android 9 Digital Photograpy: The Unofficial Mini-Guide (English Edition)

Area51 Publishing

Android Studio Videocorso. Volume 9              

ANDROID移动应用开发任务驱动教程(ANDROID/9.0+/ANDROID/STUD    

Android Services & App Development 9.0 (English Edition)

Payload Media, Inc.

Android Studio 3.2 Development Essentials - Android 9 Edition: Developing Android 9 Apps Using Android Studio 3.2, Java and Android Jetpack (English Edition)

Payload Media, Inc.

Android Studio 3.4 Development Essentials - Java Edition: Developing Android 9 Apps Using Android Studio 3.4, Java and Android Jetpack