Android Socket 聊天室示例

1.服务端

 package com.test.chatServer;

 import java.io.IOException;
 import java.net.ServerSocket;
 import java.net.Socket;

 import javax.swing.JOptionPane;

 public class ChatServer extends Thread {
     @Override
     public void run() {
         try {
             ServerSocket svSocket = new ServerSocket();
             while(true){
                 Socket socket = svSocket.accept();//accept会阻塞当前线程，最好把这独立在线程中，然后等待客户socket连接
                 JOptionPane.showMessageDialog(null, "已经有客户socket连接到servSocket");
                 ChatClient c = new ChatClient(socket);
                 ChatManager.getChatManager().add(c);
                 c.start();
             }
         } catch (IOException e) {
             e.printStackTrace();
         }
     }
 }

 package com.test.chatServer;

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.Socket;

 public class ChatClient extends Thread {
     Socket socket;

     void output(String out) {
         try {
             socket.getOutputStream().write(out.getBytes("UTF-8"));
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     void receiveMsg() {
         try {
             InputStream is = socket.getInputStream();
             InputStreamReader isr = new InputStreamReader(is, "UTF-8");
             BufferedReader br = new BufferedReader(isr);
             String line = null;
             while ((line = br.readLine()) != null) {
                 line += "\n";//手动增加的\n，是由于命令行只有\r没有\n，正常客户端发送的要有10
                 ChatManager.getChatManager().sendToEveryone(this, line);
             }
             br.close();
             isr.close();
             is.close();

         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     void sendMsg() {
         int count = ;
         while (true) {
             count++;
             output("\n loop : " + count + "\n");
             try {
                 sleep();
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }
         }
     }

     @Override
     public void run() {
         receiveMsg();
     }

     public ChatClient(Socket socket) {
         this.socket = socket;
     }

 }

 package com.test.chatServer;

 import java.util.Vector;

 public class ChatManager {

     private static final ChatManager cm = new ChatManager();

     private Vector<ChatClient> vector = new Vector<>();

     public void add(ChatClient cc){
         vector.add(cc);
     }

     public void sendToEveryone(ChatClient cc,String msg){
         for (int i = ; i < vector.size(); i++) {
             ChatClient client = vector.get(i);
             if (!cc.equals(client)) {
                 client.output(msg);
             }
         }
     }

     private ChatManager(){
     }
     public static ChatManager getChatManager(){
         return cm;
     }
 }

2.android客户端

 package com.example.socketsample;

 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.net.SocketTimeoutException;
 import java.net.UnknownHostException;

 import android.app.Activity;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;

 public class MainActivity extends Activity {

     private static final String IP = "192.168.1.100";
     private static final int PORT = ;
     private static final int TIME_OUT = ;

     private EditText ip,input;
     private TextView msgList;

     private Socket socket;

     private BufferedReader reader;
     private BufferedWriter writer;

     void connect(){

         AsyncTask<Void, String, String> listnerThread = new AsyncTask<Void, String, String>(){
             @Override
             protected String doInBackground(Void... params) {
                 try {
                     //1，连接 socket
                     //socket不能在main线程中构造。
                     socket = new Socket();
                     //设置ip，端口，超时时间
                     socket.connect(new InetSocketAddress(ip.getText().toString(), PORT), TIME_OUT);

                     //2,初始化 in流，out流
                     writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
                     reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                     publishProgress("@success");

                     //3，从socket中读取内容
                     String line;
                     while ((line = reader.readLine())!= null) {
                         publishProgress(line);
                     }
                 }catch(UnknownHostException uhe) {
                     return "无法建立链接,主机名错误";
                 }catch(SocketTimeoutException ste){
                     return "连接 超时";
                 }catch(IOException ioe) {
                     return "IO异常" + ioe.getMessage();
                 }
                 return "执行完毕";
             }
             @Override
             protected void onProgressUpdate(String... values) {
                 if (values[].equals("@success")) {
                     msgList.append("链接成功！");
                 }
                 msgList.append("其它人说：" + values[] + "\n");
             }
             @Override
             protected void onPostExecute(String result) {
                 msgList.setText(result);
             }
         };
         listnerThread.execute();

     }
     void send(){
         try {
             if (writer != null) {
                 msgList.append("你对其它人说：" + input.getText().toString() + "\n");
                 writer.write(input.getText().toString() + "\n");
                 writer.flush();
                 input.setText("");
             }else{
                 msgList.setText("还没有连接");
             }
         } catch (IOException e) {
             e.printStackTrace();
             msgList.setText("写入数据异常");
         }
     }

     //------------------------------------------
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         ip = (EditText) findViewById(R.id.edt_ip);
         input = (EditText) findViewById(R.id.edt_input);
         msgList = (TextView) findViewById(R.id.tv_msg_list);

         findViewById(R.id.btn_connect).setOnClickListener(new View.OnClickListener() {

             @Override
             public void onClick(View v) {
                 connect();
             }
         });
         findViewById(R.id.btn_send).setOnClickListener(new View.OnClickListener() {

             @Override
             public void onClick(View v) {
                 send();
             }
         });
     }
 }

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/Linear_frame"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     tools:context="${relativePackage}.${activityClass}" >

     <LinearLayout
         android:id="@+id/Linear_top"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" >

         <EditText
             android:id="@+id/edt_ip"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1.10"
             android:ems="10"
             android:text="192.168.1.100" />

         <Button
             android:id="@+id/btn_connect"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="connect" />
     </LinearLayout>

     <TextView
         android:id="@+id/tv_msg_list"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_weight="1"
         android:hint="msg list" />

     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical" >

         <EditText
             android:id="@+id/edt_input"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:ems="10"
             android:hint="input your msg" >

             <requestFocus />
         </EditText>

         <Button
             android:id="@+id/btn_send"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:text="send" />

     </LinearLayout>

 </LinearLayout>