Turn Off Screen Widget allows you to turn off the screen and lock your device in different ways:
1. Launcher shortcut - No need to create a widget
2. Launcher widget 1x1, 2x2, 4x4, ( resizable in Android 4.0+)
3. Widget available in lock screen ( Android 4.2+)
4. Notification option - Fast screen off from notification area.
For those who cannot see the screen off animation, make sure animations are enabled:
Android 4.x: Go to "Setting > Developer options > Transition animation", and then select 1x for this option.
Android 2.x, Make sure you selected the option "All animations" under "Settings > Display > Animation".