Preference

public class Preference
extends Object implements Comparable<Preference>

java.lang.Object
↳	androidx.preference.Preference

Known direct subclasses DialogPreference, PreferenceGroup, SeekBarPreference, TwoStatePreference DialogPreference A base class for Preferences that are dialog-based.  PreferenceGroup A container for multiple Preferences.  SeekBarPreference Preference based on android.preference.SeekBarPreference but uses support preference as a base .  TwoStatePreference Common base class for preferences that have two selectable states, save a boolean value, 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 ListPreference that presents the options in a drop down menu rather than a dialog.  EditTextPreference A DialogPreference that shows a EditText in the dialog.  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 A container that is used to group similar Preferences.  PreferenceScreen A top-level container that represents a settings screen.  SwitchPreference A Preference that provides a two-state toggleable option.  SwitchPreferenceCompat A Preference that provides a two-state toggleable option.

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The basic building block that represents an individual setting displayed to a user in the preference hierarchy. This class provides the data that will be displayed to the user and has a reference to the SharedPreferences or PreferenceDataStore instance that persists the preference's values.

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 that represents the key that is used to persist the value to the device. It is up to the subclass to decide how to store the value.

Summary

Nested classes
class	Preference.BaseSavedState A base class for managing the instance state of a Preference.
interface	Preference.OnPreferenceChangeListener Interface definition for a callback to be invoked when the value of this Preference has been changed by the user and is about to be set and/or persisted.
interface	Preference.OnPreferenceClickListener Interface definition for a callback to be invoked when a Preference is clicked.
interface	Preference.SummaryProvider<T extends Preference> Interface definition for a callback to be invoked when the summary of this Preference is requested (typically when this preference is added to the hierarchy or its value is updated).

Constants
int	DEFAULT_ORDER Specify for setOrder(int) if a specific order is not required.

Public constructors
Preference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) Perform inflation from XML and apply a class-specific base style.
Preference(Context context, AttributeSet attrs, int defStyleAttr) Perform inflation from XML and apply a class-specific base style.
Preference(Context context, AttributeSet attrs) Constructor that is called when inflating a preference from XML.
Preference(Context context) Constructor to create a preference.

Public methods
boolean	callChangeListener(Object newValue) Call this method after the user changes the preference, but before the internal state is set.
int	compareTo(Preference another) Compares preference objects based on order (if set), otherwise alphabetically on the titles.
Context	getContext() Returns the Context of this preference.
String	getDependency() Returns the key of the dependency on this preference.
Bundle	getExtras() Return the extras Bundle object associated with this preference, creating a new Bundle if there currently isn't one.
String	getFragment() Return the fragment class name associated with this preference.
Drawable	getIcon() Returns the icon of this preference.
Intent