Android How to Program, 3/e

6.3 Technologies Overview

This section presents the new technologies that we use in the Cannon Game app in the order they’re encountered in the chapter.

6.3.1 Using the Resource Folder res/raw

Media files, such as the sounds used in the Cannon Game app, are placed in the app’s resource folder res/raw. Section 6.4.5 discusses how to create this folder. You’ll copy the app’s sound files into it.

6.3.2 Activity and Fragment Lifecycle Methods

We introduced Activity and Fragment lifecycle methods in Section 5.3.1. This app uses Fragment lifecycle method onDestroy. When an Activity is shut down, its onDestroy method is called, which in turn calls the onDestroy methods of all the Fragments hosted by the Activity. We use this method in the MainActivityFragment ...