Is there a code sample for this book?

[vietanh1441]

I couldn’t find this book code example similar to this http://www.bignerdranch.com/solutions/AndroidProgramming4e.zip.
Is such zip file exist for this book and if so, where can I find it? Thank you

[Alex7]

https://www.bignerdranch.com/solutions/KotlinProgramming.zip