Update information received from Arduin

Question

I have made an application that interacts with a robotic head with Arduino and I would like to know how to automatically receive all the data from the robot without having to trigger the sending of some command

It would work similar to a log, always keeping updated the app of the information received from the robot

This is the thread I have to configure the receipt of information

 class ThreadServidor extends Thread{
        @Override
        public void run(){
            try{
                if(socket != null){
                    /*serverSocket.close();*/
                    // Depois que alguém conectou, pega a InputStream para ler as mensagens
                    in = socket.getInputStream();
                    // Fica em loop, para receber as mensagens
                    while(true) {
                        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
                        String line = reader.readLine();
                        updateViewMensagem(line);
                    }
                }
            } catch(IOException e){
                e.printStackTrace();
            }
        }
    }

And this is the method that shows on the screen the information received

private void updateViewMensagem(String s) {
        if((!s.isEmpty()) && s != null){
            if(qtdLinhas == 10){
                list = "";
                qtdLinhas = 1;
            }
            if(ordem == 7){
                list += s;
                ordem = 1;
                qtdLinhas++;
            }else{
                list += s + " - ";
                ordem++;
            }
            getActivity().runOnUiThread(new Runnable(){
                @Override
                public void run(){
                    if(list != null){
                        logInfo.setText(list);
                    }
                }
            });
        }
    }

Note:I don’t know how to put the code among the necessary markups here in the forum(yet.....)

Thank you.