Android How to Program, 3/e

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Objectives

In this chapter you’ll:

• Use Fragments to make better use of available screen real estate in an Activity’s GUI on phones and tablets.

• Display a settings icon on the app bar to enable users to access the app’s user preferences.

• Automatically manage and persist an app’s settings via a PreferenceFragment.

• Modify key–value pairs settings via a SharedPreferences.Editor.

• Organize image resources in the app’s assets subfolders and manipulate them with an AssetManager.

• Define an animation and apply it to a View.

• Use a Handler to schedule a future task to perform on the GUI thread.

• Use Toasts to display messages briefly to the user.

• Launch a specific Activity with an explicit Intent.

• Use collections from the java.util package. ...