backTasks.java

package com.slprojects.pizzeria;

import android.os.AsyncTask;
import android.util.Log;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class backTasks extends AsyncTask<String, Void, Void> {
    private Socket socket;
    private PrintWriter output;
    private BufferedReader input;
    private MainActivity activity;

    public backTasks (MainActivity activity){
        this.activity = activity;
    }

    @Override
    protected Void doInBackground(String... message) {
        int serverPort = 9874;
        String address = "chadok.info";

        try {
            Log.i("backTasks:", "Connecting to " + address + ":"+ serverPort + "...");
            socket = new Socket(address, serverPort);
            Log.i("backTasks:", "Connected");

            output = new PrintWriter(socket.getOutputStream(), true);
            input = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            registerCommand(message[0]);

            // Ici on va tout simplement lire les messages du serveur
            // Et arrêter la boucle avec un flag
            String receviedMsg = "";
            Integer receivedFlag = 0;
            while(receivedFlag < 2){
                receviedMsg = input.readLine();
                if (receviedMsg != null){ // Si le message n'est pas null
                    Log.i("backTasks", "received message: " + receviedMsg);
                    receivedFlag++; // On incrémente le flag
                }
            }
            String finalReceviedMsg = receviedMsg; // On stocke le message dans une variable final
            activity.runOnUiThread(() -> { // On lance le code sur l'UI Thread
                activity.createAlertMessage(finalReceviedMsg, "Message de la cuisine"); // On affiche le message reçu
            });
        } catch (Exception x) {
            x.printStackTrace();
        }
        return null;
    }

    public void registerCommand(String command){
        if(output != null){
            Log.i("backTasks", "registered command: "+command);
            output.write(command);
            output.flush();
        }

    }
}