Kotlin for Android Developers (the book)

This is the code you can use to follow the book.

https://antonioleiva.com/kotlin-android-developers-book/

Are you tired of using an ancient, inexpressive and unsafe language to develop your Android apps? Do you cry out loud every time you see a Null Pointer Exception in your bug tracker? Then Kotlin is your solution! A language specifically created for Java developers, easy to learn, expressive, null safe and really intuitive. Your productivity will boost and your apps will become more robust. Learn Kotlin the easy way by example and discover the tricks that will make coding easier.

And now, it's officially supported by Google!

About the book

In this book, I'll be creating an Android app from ground using Kotlin as the main language. The idea is to learn the language by example, instead of following a typical structure. I'll be stopping to explain the most interesting concepts and ideas about Kotlin, comparing it with Java 7. This way, you can see what the differences are and which parts of the language will help you speed up your work.

This book is not meant to be a language reference, but a tool for Android developers to learn Kotlin and be able to continue with their own projects by themselves. I'll be solving many of the typical problems we have to face in our daily lives by making use of the language expressiveness and some other really interesting tools and libraries.

The book is very practical, so it is recommended to follow the examples and the code in front of a computer and try everything it's suggested. You could, however, take a first read to get a broad idea and then dive into practice.

Versions

As I update the book, I need to push -f this repository with the new changes, so that it matches with the new text.

That means that if you are reading an old version of the book, main branches won't be aligned with your text.

To make things easier, I'll keep track of those versions in separates branches, which will be linked from here:

• 7th edition: February 2019 (current)
• 6th edition: April 2018
• 5th edition: September 2017
• 4th edition: July 2017
• 3rd edition: June 2017
• 2nd edition: January 2017
• 1st edition: March 2016

License

Copyright 2019 Antonio Leiva

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.