Added in API level 1

SharedPreferences.OnSharedPreferenceChangeListener

Kotlin |Java

public static interface SharedPreferences.OnSharedPreferenceChangeListener

android.content.SharedPreferences.OnSharedPreferenceChangeListener

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.