About the Author

Rivu Chakraborty is a Google-certified Android developer and a senior tech member at the Institute of Engineers (India), and also has certifications in Scrum. With over 5 years of experience, he is currently working as a senior software engineer (Android) at Indus Net Technologies Pvt. Ltd.

He considers himself a Kotlin and Android enthusiast and a Kotlin evangelist. He has been using Kotlin since December 2015, so he has around 2 years of experience in Kotlin at the time of publishing this book. As a part of his mission to spread the use and knowledge of the Kotlin language as much as possible, he created the KotlinKolkata user group—one of the most active Kotlin user groups throughout the world, and he is the Founder Organizer of KotlinKolkata. He is also an active member of GDG Kolkata and gives talks at the GDG Kolkata meetups.

As Rivu believes that knowledge increases by sharing, he writes a lot of tutorials on JavaCodeGeeks, AndroidHive, and his own site (http://www.rivuchk.com), which you can visit to read his tutorials and learn more about him.

I would like to thank my wife, parents and whole family (including inlaws) for being with me while I was writing this book.

I would like to thank my college teachers, Avik Dey and Nandan Banerjee—they have always encouraged and helped me learn and strive to become a better developer from the beginning of my engineering course till date. I always feel more encouraged whenever I speak to them.

Also, this book wouldn't have been completed without the continuous guidance and support of the Packt team, especially by the CDE of this book, Akshada—her encouraging comments meant a lot to me.