I have this code for my Preference screen,

<RingtonePreference 
    android:key="notification_sound" 
    android:ringtoneType="notification" 
    android:title="Notification Sound" 
    android:showDefault="true" 
    android:showSilent="true" />

我要为铃声preference设为默认值的XML 默认通知声音，该怎么办呢？

感谢

推荐答案

我找到的解决方案，这要归功于乔，设置defaultValue必须是：

i found solution, thanks to Joe, defaultValue Must be :

android:defaultValue="content://settings/system/notification_sound"