安装以下应用之一就可以一键黑屏。
https://play.google.com/store/apps/details?id=in.binarybox.blackscreen1
https://play.google.com/store/apps/details?id=in.binarybox.blackscreen2
https://play.google.com/store/apps/details?id=com.ayushashish.alwaysondarkscreen
https://play.google.com/store/apps/details?id=com.cyphercubecorporation.blackscreen
https://play.google.com/store/apps/details?id=net.mxbi.blackscreen