public class Networking extends AsyncTask{

        @Override
        protected Object doInBackground(Object[] arg0) {

            Socket client =null;

            try {

                client = new Socket("192.168.10.120", 2050);
                client.setKeepAlive(true);
                client.setSoTimeout(1000);
                dataOutputStream = new DataOutputStream(client.getOutputStream());
                dataInputStream = new DataInputStream(client.getInputStream());

                dataOutputStream.write(byteArray);//Отправляем массив

                byte[] Answer = new byte[dataInputStream.readUnsignedByte()];//Создание массива соответствующего размера
                dataInputStream.read(Answer);//Чтение данных в массив

                return Answer;

            } catch (UnknownHostException e) {
                //toast("Got an UnknownHostException: " + e.getMessage());
                byte[] Answer = new byte[0];
                return Answer;
            } catch (IOException e) {
                //toast("Got an IOException: " + e.getMessage());
                byte[] Answer = new byte[0];
                return Answer;
            }
        }

    }

Networking n = new Networking();
        n.execute();
        GetData();

protected void onPostExecute(String result) {           
            if (textView != null) {
                textView.setText(result);
            }
        }