目前想让手机客户端和服务器保持长连接故选择socket进行通信

首先是新建一个socket服务器端

 

/*** Main.java* 版权所有(C) 2012 * 创建:cuiran 2012-09-14 08:56:16*/
package com.wpndemo.socket;
import java.io.BufferedReader;  
import java.io.BufferedWriter;  
import java.io.IOException;  
import java.io.InputStreamReader;  
import java.io.OutputStreamWriter;  
import java.io.PrintWriter;  
import java.net.ServerSocket;  
import java.net.Socket;  
import java.util.ArrayList;  
import java.util.List;  
import java.util.concurrent.ExecutorService;  
import java.util.concurrent.Executors;  /*** TODO* @author cuiran* @version TODO*/
public class Main {private static final int PORT = 8090;  private List<Socket> mList = new ArrayList<Socket>();  private ServerSocket server = null;  private ExecutorService mExecutorService = null; //thread pool   public static final String bm="utf-8"; //全局定义，以适应系统其他部分public static void main(String[] args) {  new Main();  }  public Main() {  try {  server = new ServerSocket(PORT);  mExecutorService = Executors.newCachedThreadPool();  //create a thread pool   System.out.print("server start ...");  Socket client = null;  while(true) {  client = server.accept();  mList.add(client);  mExecutorService.execute(new Service(client)); //start a new thread to handle the connection   }  }catch (Exception e) {  e.printStackTrace();  }  }  class Service implements Runnable {  private Socket socket;  private BufferedReader in = null;  private String msg = "";  public Service(Socket socket) {  this.socket = socket;  try {  in = new BufferedReader(new InputStreamReader(socket.getInputStream(),bm));  msg = "user" +this.socket.getInetAddress() + "come toal:"  +mList.size();  this.sendmsg();  } catch (IOException e) {  e.printStackTrace();  }  }  @Override  public void run() {  // TODO Auto-generated method stub   try {  while(true) {  if((msg = in.readLine())!= null) {  if(msg.equals("exit")) {  System.out.println("ssssssss");  mList.remove(socket);  in.close();  msg = "user:" + socket.getInetAddress()  + "exit total:" + mList.size();  socket.close();  this.sendmsg();  break;  } else {  System.out.println("msg="+msg);msg = socket.getInetAddress() + ":" + msg;  this.sendmsg();  }  }  }  } catch (Exception e) {  e.printStackTrace();  }  }  public void sendmsg() {  System.out.println(msg);  int num =mList.size();  for (int index = 0; index < num; index ++) {  Socket mSocket = mList.get(index);  PrintWriter pout = null;  try {  pout = new PrintWriter(new BufferedWriter(  new OutputStreamWriter(mSocket.getOutputStream(),bm)),true);  pout.println(msg);  }catch (IOException e) {  e.printStackTrace();  }  }  }  } 
}

然后是新建一个android工程：

在文件【AndroidManifest.xml】添加内容：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.cayden.socket"android:versionCode="1"android:versionName="1.0" ><uses-sdk android:minSdkVersion="8" /><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission><applicationandroid:icon="@drawable/ic_launcher"android:label="@string/app_name" ><activityandroid:name=".SocketActivity"android:label="@string/app_name" ><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application></manifest>

然后是创建类：

package com.cayden.socket;import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;import com.cayden.util.Conf;import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;public class SocketActivity extends Activity implements Runnable {private TextView tv_msg = null;  private EditText ed_msg = null;  private Button btn_send = null;  
//    private Button btn_login = null;   private static final String HOST = "219.143.49.189";  private static final int PORT = 8403;  private Socket socket = null;  private BufferedReader in = null;  private PrintWriter out = null;  private String content = "";  public static final String bm="utf-8"; //全局定义，以适应系统其他部分/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);tv_msg = (TextView) findViewById(R.id.TextView);  ed_msg = (EditText) findViewById(R.id.EditText01);  
//        btn_login = (Button) findViewById(R.id.Button01);   btn_send = (Button) findViewById(R.id.sendBtn);  try {  socket = new Socket(HOST, PORT);  in = new BufferedReader(new InputStreamReader(socket.getInputStream()));  out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(  socket.getOutputStream(),bm)), true);Log.i(Conf.TAG, "连接成功");} catch (IOException ex) {  ex.printStackTrace(); Log.i(Conf.TAG, "出现异常："+ex.getMessage());ShowDialog("login exception" + ex.getMessage());  }  btn_send.setOnClickListener(new Button.OnClickListener() {  @Override  public void onClick(View v) {  // TODO Auto-generated method stub   String msg = ed_msg.getText().toString();  if (socket.isConnected()) {  if (!socket.isOutputShutdown()) {  try {out.println(msg);} catch (Exception e) {e.printStackTrace();}  }  }  }  });  new Thread(SocketActivity.this).start();  }public void ShowDialog(String msg) {  new AlertDialog.Builder(this).setTitle("notification").setMessage(msg)  .setPositiveButton("ok", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {  }  }).show();  }  @Overridepublic void run() {// TODO Auto-generated method stubtry {  while (true) {  if (socket.isConnected()) {  if (!socket.isInputShutdown()) {  if ((content = in.readLine()) != null) {  content += "\n";  mHandler.sendMessage(mHandler.obtainMessage());  } else {  }  }  }  }  } catch (Exception e) {  e.printStackTrace();  }  }public Handler mHandler = new Handler() {  public void handleMessage(Message msg) {  super.handleMessage(msg);  tv_msg.setText(tv_msg.getText().toString() + content);  }  };  }

在后续中会增加采用mina框架来实现通信。