SD Maid – System Cleaning Tool ，非常强大专业的储存卡垃圾文件清理工具，原生简体中文，原生无广告、其所带功能非常全，且清理占用空间软少，操作简便，手机SD卡垃圾清理安卓必备之利器！
2017-12-21 SD Maid v4.9.2 Final
* Improved: Translations.
* Improved: Clutter database.
* Fixed: Inconsistent list display when deleting the last items [#1361].
* Fixed: Strings such as SD Maid PRO or BETA not actually being colored on Android 8.0+.
* Fixed: A rare crash that could happen when a shell process failed and exited prematurely.
* Fixed: Crash when granting SAF on permissions and the ROM returns that the action was OK, but actually wasn’t, and no data is returned.
* Fixed: Crash when trying to report a clutter entry but the list of installed apps contains an app without a name.
* Fixed: Crash when creating an Activity shortcut and the app has no name.
* Changed: The thumbnails filter is no longer enabled by default [#1382].
* Changed: The three different types of thumbnail filters have been merged into one [#1386]
* Changed: Filter categories generic/specific.
* Improved: Bugreports filter.
* Improved: if freeStorageAndNotify is unavailable, hide it.
* Improved: Duplicates scan now skips files when I/O errors occur during checksum calculation instead of aborting [#1389].
* Fixed: Crash when opening the Scheduler settings [#1383].
* Fixed: Crash when restoring the Scheduler page after low memory events [#1387].