Book Image

Mastering Android Development with Kotlin

By : Miloš Vasić
Book Image

Mastering Android Development with Kotlin

By: Miloš Vasić

Overview of this book

Kotlin is a programming language intended to be a better Java, and it's designed to be usable and readable across large teams with different levels of knowledge. As a language, it helps developers build amazing Android applications in an easy and effective way. This book begins by giving you a strong grasp of Kotlin's features in the context of Android development and its APIs. Moving on, you'll take steps towards building stunning applications for Android. The book will show you how to set up the environment, and the difficulty level will grow steadily with the applications covered in the upcoming chapters. Later on, the book will introduce you to the Android Studio IDE, which plays an integral role in Android development. We'll use Kotlin's basic programming concepts such as functions, lambdas, properties, object-oriented code, safety aspects, type parameterization, testing, and concurrency, which will guide you through writing Kotlin code in production. We'll also show you how to integrate Kotlin into any existing Android project.
Table of Contents (24 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Looking deeper into Android Intents


The most operations you plan to perform in Android are defined through the Intent class. Intents can be used to start activities like we did, start services (processes running in background), or send broadcast messages.

Intent usually accepts an action and data that we want to pass to some class. Action attributes we can set are, for example, ACTION_VIEW, ACTION_EDIT, ACTION_MAIN.

Except action and data, we can set a category for the intent. The category gives additional information to the action we set. We can also set the type for the intent and the component that stands for the explicit component class name we will use.

There are two types of intents:

  • Explicit intents
  • Implicit intents

Explicit intents have an explicit component set that provides an explicit class to be run. Implicit intents do not have an explicit component, but the system decides what to do with it based on the data and attributes we assigned. Intent resolution process is responsible for...