Book Image

Android Studio 4.1 Development Essentials – Kotlin Edition

By : Neil Smyth
Book Image

Android Studio 4.1 Development Essentials – Kotlin Edition

By: Neil Smyth

Overview of this book

Android 11 has a ton of new capabilities. It comes up with three foci: a people-centric approach to communication, controls to let users quickly access and manage all of their smart devices, and privacy to give users more ways to control how data on devices is shared. This book starts off with the steps necessary to set up an Android development and testing environment, followed by an introduction to programming in Kotlin. An overview of Android Studio and its architecture is provided, followed by an in-depth look at the design of Android applications and user interfaces using the Android Studio environment. You will also learn about the Android architecture components along with some advanced topics such as touch screen handling, gesture recognition, the recording and playback of audio, app links, dynamic delivery, the AndroidStudio profiler, Gradle build configuration, and submitting apps to the Google Play Developer Console. The concepts of material design are also covered in detail. This edition of the book also covers printing, transitions, and cloud-based file storage; foldable device support is the cherry on the cake. By the end of this course, you will be able to develop Android 11 Apps using Android Studio 4.1, Kotlin, and Android Jetpack. The code files for the book can be found here: https://www.ebookfrenzy.com/retail/as41kotlin/index.php
Table of Contents (95 chapters)
95
Index

77.2 Working with the Storage Access Framework

Android includes a set of Intents designed to integrate the features of the Storage Access Framework into Android applications. These intents display the Storage Access Framework picker user interface to the user and return the results of the interaction to the application via a call to the onActivityResult() method of the activity that launched the intent. When the onActivityResult() method is called, it is passed the Uri of the selected file together with a value indicating the success or otherwise of the operation.

The Storage Access Framework intents can be summarized as follows:

ACTION_OPEN_DOCUMENT – Provides the user with access to the picker user interface so that files may be selected from the document providers configured on the device. Selected files are passed back to the application in the form of Uri objects.

ACTION_CREATE_DOCUMENT – Allows the user to select a document provider, a...