Added in API level 1

SharedPreferences.OnSharedPreferenceChangeListener

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Kotlin |Java

public static interface SharedPreferences.OnSharedPreferenceChangeListener

android.content.SharedPreferences.OnSharedPreferenceChangeListener

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Interface definition for a callback to be invoked when a shared preference is changed.

Summary

Public methods
abstract void	onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) Called when a shared preference is changed, added, or removed.

Public methods

onSharedPreferenceChanged

Added in API level 1

public abstract void onSharedPreferenceChanged (SharedPreferences sharedPreferences, 
                String key)

Called when a shared preference is changed, added, or removed. This may be called even if a preference is set to its existing value.

This callback will be run on your main thread.

Note: This callback will not be triggered when preferences are cleared via Editor.clear(), unless targeting Build.VERSION_CODES.R on devices running OS versions Android R or later.

Parameters
sharedPreferences	SharedPreferences: The SharedPreferences that received the change.
key	String: The key of the preference that was changed, added, or removed. Apps targeting Build.VERSION_CODES.R on devices running OS versions Android R or later, will receive a null value when preferences are cleared.