Preference.OnPreferenceChangeListener

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. This gives the client a chance to prevent setting and/or persisting the value.

Summary

Public functions

Boolean
onPreferenceChange(preference: Preference, newValue: Any!)

Called when a preference has been changed by the user.

Public functions

onPreferenceChange

Added in 1.0.0
fun onPreferenceChange(preference: Preference, newValue: Any!): Boolean

Called when a preference has been changed by the user. This is called before the state of the preference is about to be updated and before the state is persisted.

Parameters
preference: Preference

The changed preference

newValue: Any!

The new value of the preference

Returns
Boolean

true to update the state of the preference with the new value