CHAPTER 12: Digital Audio: Providing Aural Feedback for UI Designs Using SoundPool 473You learned how to implement the SoundPool engine as a SoundPool object in your application,
and about how to use it with the SparceIntArray object and the AudioManager class (and Service)
in the Android OS.
Next you added digital audio sound effects to each of your ImageButton UI elements, to make them
way cooler, and to give your application’s end-users some aural (audio) feedback regarding when
they click on the app’s ImageButton UI elements.
Next, in Chapter 13, you’ll learn all about Service classes in Android, which you actually got some
exposure to in this chapter when you implemented the AudioManager object. The next chapter
is thus a logical extension to what you learned in this chapter. As you can see, I’m trying to cover
things in the most logical, optimal fashion, as we progress through this long and complex journey to
learn how to develop applications for the Android OS.