lock screen - nature animation APK

*Fix bugs on android 4.1 JB.

******Features:******
*Private features:
--25 nature animation backgrounds available to choose.
--15 awesome swipe style to change.
*Common features:
--Preview lock screen to test.
--Active/Deactive lock screen.
--Set time out screen off.
--On/Off lock screen sound.
--Show/hide clock & datetime.
--On/Off passcode for security.
--Change your own passcode.
--Can choose background from gallery and can crop it for your own size of picture.
--On/Off auto change background each time the lock screen is shown.
--On/Off auto change swipe style each time the lock screen is shown.