Screen Off
APK Real Demo : https://www.dropbox.com/s/tn86yymu6lhgjka/9.Screen%20Off%20and%20Lock.apk?dl=1
+ Android Studio Project
+ Put your device sleep without power button
Similar apps on Google Play:
https://play.google.com/store/apps/details?id=com.katecca.screenofflock
https://play.google.com/store/apps/details?id=nl.matthijsvh.screenoff