学习笔记：一、设置壁纸通过系统设置进行锁屏壁纸和桌面壁纸的设置。Setting部分的代码：//DefaultWallpaperPersister.javaprivateintsetStreamToWallpaperManagerCompat(InputStreaminputStream,booleanallowBackup,intwhichWallpaper){try{//whichWallpaper//壁纸类型returnmWallpaperManagerCompat.setStream(inputStream,null,allowBackup,whichWallpaper);}catch(