android 改变系统默许动态壁纸

./device/samsung/xxxx/overlay/frameworks/base/core/res/res/values/config.xml

?

  <string name="default_wallpaper_component">@null</string>    <integer name="config_deskDockKeepsScreenOn">0</integer>    <integer name="config_carDockKeepsScreenOn">1</integer>    <!-- Default color for notification LED is white -->    <color name="config_defaultNotificationColor">#ffffffff</color>    <!-- Default blink frequency for notification LED is 9 seconds. -->    <integer name="config_defaultNotificationLedOff">9000</integer>    <!-- Component name of the service providing network location support. -->    <string name="config_networkLocationProvider">com.google.android.location.NetworkLocationProvider</string>    <!-- Component name of the service providing geocoder API support. -->    <string name="config_geocodeProvider">com.google.android.location.GeocodeProvider</string>

?在这里改

  <string name="default_wallpaper_component">@null</string>