Book Image

Kotlin Programming Cookbook

By : Aanand Shekhar Roy, Rashi Karanpuria
Book Image

Kotlin Programming Cookbook

By: Aanand Shekhar Roy, Rashi Karanpuria

Overview of this book

The Android team has announced first-class support for Kotlin 1.1. This acts as an added boost to the language and more and more developers are now looking at Kotlin for their application development. This recipe-based book will be your guide to learning the Kotlin programming language. The recipes in this book build from simple language concepts to more complex applications of the language. After the fundamentals of the language, you will learn how to apply the object-oriented programming features of Kotlin 1.1. Programming with Lambdas will show you how to use the functional power of Kotlin. This book has recipes that will get you started with Android programming with Kotlin 1.1, providing quick solutions to common problems encountered during Android app development. You will also be taken through recipes that will teach you microservice and concurrent programming with Kotlin. Going forward, you will learn to test and secure your applications with Kotlin. Finally, this book supplies recipes that will help you migrate your Java code to Kotlin and will help ensure that it's interoperable with Java.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Logging using Anko


Logging is a great way to debug your application. You might have used android.util.Log, which wasn’t a very convenient way to log messages as it required you to provide the Log tag with every message and also required you to define the tag, which was usually the class name every time. Anko provides the anko-logger, which comes with anko-commons. It is a very convenient way of logging messages as it doesn’t require you to necessarily override the log tag. In this recipe, we will learn how to do it.

Getting ready

I'll be using Android Studio to write the code. You need to add anko-commons to your build.gradle file. Anko logger comes within the anko-commons library:

dependencies {
    compile "org.jetbrains.anko:anko-commons:$anko_version"
}

How to do it…

Follow the given steps to learn how to use logging with the help of Anko library:

  1. Logging in to Anko is very simple. You just need to implement AnkoLogger, as follows:
class MainActivity : AppCompatActivity(),AnkoLogger {
  1. Then,...