Java Android套接字线程

Question

I've a client class which tries to connect to a server. But as you know you can't execute network operations on the Main UI thread. So I've to create different threads for each operation.

Current code:

 package com.example.justus.rocchat; import android.os.AsyncTask; import android.util.JsonWriter; import java.io.BufferedWriter; import java.io.DataOutputStream; import java.io.IOException; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.net.URL; import java.net.UnknownHostException; /** * Created by justus on 13-1-2015. */ public class Client { private String name; private int port; private String hostAddress; private Socket socketClient; private MainActivity mainActivity; public boolean isConnected; public Client(MainActivity mainActivity, String hostAdress, int port) { this.hostAddress = hostAdress; this.port = port; this.mainActivity = mainActivity; } public void send(final byte[] data) { Thread sendThread = new Thread(new Runnable() { public void run() { try { DataOutputStream out = new DataOutputStream(socketClient.getOutputStream()); out.write(data); System.out.println("writed data"); } catch (IOException ex) { } } }); sendThread.start(); } public void connect() { Thread connectThread = new Thread(new Runnable() { public void run() { try { System.out.println("trying to connect"); socketClient = new Socket(hostAddress, port); isConnected = true; } catch(UnknownHostException ex) { System.out.println("ex:" + ex.getMessage()); } catch (IOException ex) { System.out.println("ex:" + ex.getMessage()); } } }); connectThread.start(); } } 

Isn't this a little to much? Are there any better ways to handle this operations? Already thanks for your time.

Answer 1

AsyncTask is the accepted way of handling asynchronous operations. It is a wrapper around the Thread class and is part of the Android SDK. They should only be used for operations that last under a few seconds, for longer operations you should use a Service.

developer.android.com/reference/android/os/AsyncTask.html

Answer 2

There are 2 options that you have

1. Use AsyncTask - much easier, object oriented that using threads but only for shortlived tasks (under 30 secs)
2. Use RoboSpice - https://github.com/stephanenicolas/robospice
   Of the two, I prefer RoboSpice