Screen off and Lock (Floating)

Screen off and lock aka. One LockScreen, let your phone's screen off and lock without doing any "closing an app, backing to home screen, pressing a lock screen icon" things. Try this.
--- Floating lock screen icon. Power off your phone's screen any way, any time.
--- Shake to hide floating icon. Shake your phone, you will find the floating icon hide conveniently.
--- Long press to hide floating icon. Press long on the icon, it will hide immediately.
--- Double click to lock screen. This function will reduce the possibility of misoperation.
--- Free for free. No more ads!!
*****Our advantage*****
Usually, when you are using other similar apps such as Screen off and lock, Lock screen etc. they all need you return to launcher and press the lock screen icon to power off phone's screen. But if you are using Screen off and lock floating, because its floating design, you can lock your phone's screen immediately, no more return to launcher. And also the deferences between Go Lock screen and my app is that you can using shake to hide floating icon and double click to lock screen in my app.
*****We promise*****
We won't get any of your privacy information, and some the app's permission such as access internet is for the upgrade function.
This application needs to get the device administrator privileges to allow the APP daemon to run properly, giving the user a better user experience.