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

Sending an email using Anko


In this recipe, we will see how to send an email using Anko's wrapper. Sending an email is very useful as almost all apps provide a method of contact. So let's get started!

Getting ready

I'll be using Android Studio for coding purposes. You need to include Anko library in your build.gradle file. Just add these lines and you are good to go:

compile "org.jetbrains.anko:anko-commons:$anko_version"

You can also clone the repository at gitlab.com/aanandshekharroy/Anko-examples and switch to the 3-intent-actions branch to get the source code.

How to do it…

We will use the email function provided by Anko library that takes three parameters, out of which only one is mandatory:

email("[email protected]","Subject","Text")

You can remove the subject and text if you don't want prefilled text in the email.

How it works…

Let's take a look at its implementation:

fun Context.email(email: String, subject: String = "", text: String = ""): Boolean {
    val intent = Intent(Intent.ACTION_SENDTO...