Preference

public class Preference
extends Object implements Comparable<Preference>

Known Direct Subclasses DialogPreference,PreferenceGroup,SeekBarPreference,TwoStatePreference DialogPreference A base class for Preference objects that are dialog-based.  PreferenceGroup A container for multiple Preference objects.  SeekBarPreference Preference based on android.preference.SeekBarPreference but uses support v7 preference as base.  TwoStatePreference Common base class for preferences that have two selectable states, persist a boolean value in SharedPreferences, and may have dependent preferences that are enabled/disabled based on the current state.

Known Indirect Subclasses CheckBoxPreference,DropDownPreference,EditTextPreference,ListPreference,MultiSelectListPreference,PreferenceCategory,PreferenceScreen,SwitchPreference,SwitchPreferenceCompat CheckBoxPreference A Preference that provides checkbox widget functionality.  DropDownPreference A version of ListPreference that presents the options in a drop down menu rather than a dialog.  EditTextPreference A Preference that allows for string input.  ListPreference A Preference that displays a list of entries as a dialog.  MultiSelectListPreference A Preference that displays a list of entries as a dialog.  PreferenceCategory Used to group Preference objects and provide a disabled title above the group.  PreferenceScreen Represents a top-level Preference that is the root of a Preference hierarchy.  SwitchPreference A Preference that provides a two-state toggleable option.  SwitchPreferenceCompat A Preference that provides a two-state toggleable option.

Represents the basic Preference UI building block displayed by a PreferenceFragmentCompat in the form of a RecyclerView. This class provides data for the View to be displayed in the list and associates with a SharedPreferences to store/retrieve the preference data.

When specifying a preference hierarchy in XML, each element can point to a subclass of Preference, similar to the view hierarchy and layouts.

This class contains a key that will be used as the key into the SharedPreferences. It is up to the subclass to decide how to store the value.