Add double tap to sleep feature in your Android devices.
Using this app, you can double tap status bar / navigation bar / lockscreen / notifications shade to quickly lock your screen. No need to reach for the power button always!
Note: The app is fully free, without ads. If you wish to donate, you can do that via an in-app purchase. This does NOT unlock any new feature. Thank you for your support.
Permissions explained:
* Admin permission is required to turn of the screen and put the phone to sleep
* Lollipop smart lock is not supported by Device Admin. It's an Android system limitation. However, smart lock is supported by Easy Lock if you have root access. If you see a prompt for root access, this is what that's for.
* Draw over other apps permission is required to detect double taps.
* App Usage Statistics (in Lollipop and above) is required if you enable the option 'Try to avoid soft key presses'. This permission will be requested only if you enable this option.
Hopefully it won't come to this, but just in case, to uninstall the app, you'll have to deactivate device admin permission first (Settings -> Security -> Device Admin -> Easy Lock).
Source code is available under Apache v2 licence: https://github.com/aravindsagar/EasyLock/