Cannot print on Embedded printer about printama HOT 2 CLOSED

        @Override
        protected BluetoothSocket doInBackground(BluetoothDevice... bluetoothDevices) {
            BluetoothDevice device = bluetoothDevices[0];
            UUID uuid;
            if (device != null) {
//                uuid = device.getUuids()[0].getUuid();
                ParcelUuid[] uuids = device.getUuids();
                uuid = (uuids != null && uuids.length > 0) ? uuids[0].getUuid() : UUID.randomUUID();
            } else {
                return null;
            }
            BluetoothSocket socket = null;
            boolean connected = true;
            try {
                socket = device.createRfcommSocketToServiceRecord(uuid);
                socket.connect();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (Exception e2) {
                connected = false;
            }
            return connected ? socket : null;
        }