Book Image

Android Studio 4.1 Development Essentials – Java Edition

By : Neil Smyth
Book Image

Android Studio 4.1 Development Essentials – Java Edition

By: Neil Smyth

Overview of this book

For developers, Android 11 has a ton of new capabilities. The goal of this book is to teach the skills necessary to develop Android-based applications using the Java programming language. This book begins with the steps necessary to set up an Android development and testing environment. An overview of Android Studio along with the architecture of Android is covered next, 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, including the use of floating action buttons, Snackbars, tabbed interfaces, card views, navigation drawers, and collapsing toolbars are a highlight of this book. This edition of the book also covers printing, transitions, and cloud-based file storage; the 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, Java, and Android Jetpack. The code files for the book can be found here: https://www.ebookfrenzy.com/retail/androidstudio41/index.php
Table of Contents (88 chapters)
88
Index

13.5 Lifetimes

The final topic to be covered involves an outline of the entire, visible and foreground lifetimes through which an activity or fragment will transition during execution:

Entire Lifetime –The term “entire lifetime” is used to describe everything that takes place between the initial call to the onCreate() method and the call to onDestroy() prior to the object terminating.

Visible Lifetime – Covers the periods of execution between the call to onStart() and onStop(). During this period the activity or fragment is visible to the user though may not be the object with which the user is currently interacting.

Foreground Lifetime – Refers to the periods of execution between calls to the onResume() and onPause() methods.

It is important to note that an activity or fragment may pass through the foreground and visible lifetimes multiple times during the course of the entire lifetime.

The concepts of lifetimes...