Adding this to quick settings is framework thing and we cant decompile it... Huawei using method of compiling we dont know.... I think enable/disable is easy with just a switch :)
With Android Nougat there is the possibility to add quicksettings ...
Hi can you add support for show/hide actionbar?
You have only to add this to props ro.config.showNavigationBar=true and the switch appear on virtual keys settings
Is system/data partition f2fs?