Book Image

Android Studio 3.5 Development Essentials - Kotlin Edition

By : Neil Smyth
Book Image

Android Studio 3.5 Development Essentials - Kotlin Edition

By: Neil Smyth

Overview of this book

Popularity of Kotlin as an Android-compatible language keeps growing every day. This book will help you to build your own Android applications using Kotlin. Android Studio 3.5 Development Essentials Kotlin Edition first teaches you to install Android development and test environment on different operating systems. Next, you will create an Android app and a virtual device in Android studio, and install an Android application on emulators. You will test apps on physical android devices, then study Android Studio code editor, Android architecture, and the anatomy of an Android app. The focus then shifts to Kotlin language. You’ll get an overview of Kotlin language and practice converting code from Java to Kotlin. You’ll also explore Kotlin data types, operators, expressions, loops, functions, and the basics of OOP concept in Kotlin. This book will then cover Android Jetpack and how to create an example app project using ViewModel component, as well as advanced topics such as views and widgets implementation, multi-window support integration, and biometric authentication. Finally, you will learn to upload your app to the Google Play Console and handle the build process with Gradle. By the end of this book, you will have gained enough knowledge to develop powerful Android applications using Kotlin.
Table of Contents (93 chapters)
93
Index

58.4 Implicit Intents

Unlike explicit intents, which reference the class name of the activity to be launched, implicit intents identify the activity to be launched by specifying the action to be performed and the type of data to be handled by the receiving activity. For example, an action type of ACTION_VIEW accompanied by the URL of a web page in the form of a URI object will instruct the Android system to search for, and subsequently launch, a web browser capable activity. The following implicit intent will, when executed on an Android device, result in the designated web page appearing in a web browser activity:

val intent = Intent(Intent.ACTION_VIEW,

        Uri.parse("http://www.ebookfrenzy.com"))

 

startActivity(intent)

When the above implicit intent is issued by an activity, the Android system will search for activities on the device that have registered the ability to handle ACTION_VIEW requests on http scheme...