@Override
    public void finish() {
        super.finish();

        //If code successful, reset the timer
        if (isCodeSuccessful) {
            if (mLockManager != null) {
                AppLock appLock = mLockManager.getAppLock();
                if (appLock != null) {
                    appLock.setLastActiveMillis();
                }
            }
        }

        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.GINGERBREAD_MR1) {
            //Animate if greater than 2.3.3
            overridePendingTransition(R.anim.nothing, R.anim.slide_down);
        }
    }
Overrides to allow a slide_down animation when finishing
lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java