4.9 SettingsActivityFragment Class
Class SettingsActivityFragment (Fig. 4.44) inherits from PreferenceFragment (package android.preference). When the SettingsActivityFragment is created, method onCreate (lines 10–14) builds the preferences GUI by calling inherited PreferenceFragment method addPreferencesFromResource to build the preferences GUI from the preferences.xml (Section 4.4.11). As the user interacts with the preferences GUI, the preferences are automatically stored into a SharedPreferences file on the device. If the file does not exist, it will be created; otherwise, it will be updated. We removed the other unused autogenerated code from this class.
Fig. 4.44 SettingsActivityFragment subclass of PreferenceFragment displays the app’s ...
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