Most visited

Recently visited

public static interface Preference.OnPreferenceChangeListener

android.support.v7.preference.Preference.OnPreferenceChangeListener

当此用户更改了此Preference的值并即将设置和/或保持时，将调用回调的接口定义。这使客户有机会防止设置和/或保持价值。

Public methods
`abstract boolean`	`onPreferenceChange(Preference preference, Object newValue)` 当用户更改首选项时调用。

boolean onPreferenceChange (Preference preference, 
                Object newValue)

当用户更改首选项时调用。这在优先状态即将更新并且状态持续之前调用。

Parameters
`preference`	`Preference`: The changed Preference.
`newValue`	`Object`: The new value of the Preference.

Returns
`boolean`	True to update the state of the Preference with the new value.