1.默认壁纸
frameworks\base\core\res\res\drawable\default_wallpaper.jpg
2.动态壁纸
frameworks\base\core\res\res\values\config.xml
<string name="default_wallpaper_component">com.android.package/.classname</string>
3. 锁屏壁纸
mediatek/source/frameworks/banyan/res/res