Unlock camera AWB lock only when white-balance is changed.

        /**

         * Sets the white balance. Changing the setting will release the

         * auto-white balance lock.

         * auto-white balance lock. It is recommended not to change white

         * balance and AWB lock at the same time.

         *

         * @param value new white balance.

         * @see #getWhiteBalance()

         * @see #setAutoWhiteBalanceLock(boolean)

         */

        public void setWhiteBalance(String value) {

            String oldValue = get(KEY_WHITE_BALANCE);

            if (same(value, oldValue)) return;

            set(KEY_WHITE_BALANCE, value);

            set(KEY_AUTO_WHITEBALANCE_LOCK, FALSE);

        }

            return result;

        }

        private boolean same(String s1, String s2) {

            if (s1 == null && s2 == null) return true;

            if (s1 != null && s1.equals(s2)) return true;

            return false;

        }

    };

    /**