Android即时通信设计与实现(代码)

Android即时通信系统设计与实现（代码如下）：1，登录界面（IP地址）：package Nclient;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditT ext;public class LoginActivity extends Activity {/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(yout.login);Button btnLink = (Button) findViewById(R.id.btnLink);final EditT ext etIPaddr = (EditT ext) findViewById(R.id.etIPaddr);final Intent intent = new Intent();btnLink.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v){intent.setClass(LoginActivity.this, ClientActivity.class);//清除堆栈中其他Activityintent.putExtra("IPaddr", etIPaddr.getT ext().toString());intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);LoginActivity.this.finish();startActivity(intent);}});}}2，客户端（Android）：package Nclient;// 123456import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintStream;import .Socket;import .UnknownHostException;import java.util.Date;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Looper;import android.os.Message;import android.view.View;import android.view.View.OnClickListener; import android.widget.Button;import android.widget.EditT ext;import android.widget.T oast;public class ClientActivity extends Activity {Socket socket;BufferedReader br;PrintStream ps;Button btnSend;Button btnExit;Button btnFile;EditT ext etSend;EditT ext etReceive;MyHandler handle;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(yout.client);Intent intent = getIntent();String IPaddr = new String(intent.getStringExtra("IPaddr"));etReceive = (EditT ext) findViewById(R.id.etReceive);etSend = (EditT ext) findViewById(R.id.etSend);btnSend = (Button) findViewById(R.id.btnSend);btnExit = (Button) findViewById(R.id.btnExit);btnFile=(Button)findViewById(R.id.btnFile);try{socket = new Socket(IPaddr, 9998);if (socket != null)T oast.makeT ext(ClientActivity.this, "成功连接到服务端", T oast.LENGTH_LONG).show();// 创建输入流InputStream ins = socket.getInputStream();InputStreamReader isr = new InputStreamReader(ins, "gbk");br = new BufferedReader(isr);// 创建输出流OutputStream os = socket.getOutputStream();ps = new PrintStream(os);btnSend.setOnClickListener(new RcbtnOnclickListener());handle = new MyHandler();new Thread(new Receive()).start();// handle.post(new Receive());} catch (UnknownHostException e){e.printStackT race();} catch (IOException e){e.printStackT race();}btnFile.setOnClickListener(new OnClickListener() {public void onClick(View v)// 为文件按钮注册按钮监听{System.out.println("benfile");}});btnExit.setOnClickListener(new OnClickListener() {public void onClick(View v)// 为退出按钮注册按钮监听{System.exit(0);// 此方法可以结束线程，但无法完全退出// ClientActivity.this.finish();//此方法无法结束线程// android.os.Process.killProcess(android.os.Process.myPid());// 此方法可以结束线程，但也无法也完全退出}});// etReceive.setOnKeyListener(new )}// 发送消息按钮监听class RcbtnOnclickListener implements OnClickListener {@Overridepublic void onClick(View v){Date now = new Date();String time = timeFormat(now.getHours()) + ":"+ timeFormat(now.getMinutes()) + ":" + timeFormat(now.getSeconds());String message = etSend.getT ext().toS tring();if (!(message.equals(""))){message = time + " : " + message;etReceive.append("<<< " + message + "\n");ps.println(message);ps.flush();etSend.setT ext("");T oast.makeT ext(ClientActivity.this, "消息已发送", T oast.LENGTH_LONG).show();}else T oast.makeT ext(ClientActivity.this, "消息为空", T oast.LENGTH_LONG).show();}}// 定义消息处理方法class MyHandler extends Handler {public MyHandler(){}public MyHandler(Looper L){super(L);}// 子类必须重写此方法,接受数据@Overridepublic void handleMessage(Message msg){super.handleMessage(msg);Bundle b = msg.getData();String receive = b.getString("receive");if (!(receive.equals(""))) etReceive.append(">>> " + receive + "\n");// else etReceive.append(" ");}}// 创建发送按键的监听器class Receive implements Runnable {@Overridepublic void run(){String receive = "";try{if (br.ready())try{receive = new String(br.readLine());} catch (IOException e){receive = "服务端已停止，请退出";}} catch (IOException e){receive = "服务端已停止，请退出";}Message msg = new Message();Bundle b = new Bundle();b.putString("receive", receive);// b.putString("receive", "刷新");msg.setData(b);ClientActivity.this.handle.handleMessage(msg);handle.postDelayed(new Receive(), 300);}}//发送文件按钮监听/*----------* -----------* -----------class btnFileListener implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubSystem.out.println("发送文件监听");}}*//* ==========转换时间格式========== */ public String timeFormat(int time){if (time < 10) return "0" + time;else return "" + time;}}3，服务端（Java）：package server;import java.awt.*;import java.awt.event.*;import javax.swing.JFrame;import java.io.*;import .ServerSocket;import .Socket;import java.util.Date;import javax.swing.*;public class Server extends JFrame implements ActionListener {private static final long serialV ersionUID = 1L;JPanel panel1 = new JPanel();JPanel panel2 = new JPanel();JPanel panel3 = new JPanel();JButton btnSend = new JButton("发送");JButton btnExit = new JButton("退出");T extArea taSend = new T extArea("", 4, 58, T extArea.SCROLLBARS_NONE); T extArea taReceive = new T extArea("", 15, 58,T extArea.SCROLLBARS_VERTICAL_ONLY);ServerSocket ss = null;Socket socket = new Socket();BufferedReader br;PrintStream ps;public static void main(S tring args[]){new Server();}public Server(){btnSend.addActionListener(this);btnExit.addActionListener(this);btnSend.setMnemonic('1');btnExit.setMnemonic('2');btnSend.setFocusable(false);btnExit.setFocusable(false);setTitle("服务端");setLayout(new FlowLayout());setSize(450, 420);setResizable(false);panel1.add(taReceive);panel2.add(taSend);panel3.add(btnSend, BorderLayout.WEST);panel3.add(btnExit, BorderLayout.EAST);// taReceive.setSize(590, 320);// taSend.setSize(590, 150);// taReceive.setEnabled(false);taReceive.setFocusable(false);taSend.setEnabled(true);add(panel1, BorderLayout.NORTH);add(panel2, BorderLayout.SOUTH);add(panel3);// 关闭窗口事件的监听及处理this.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e){System.exit(0);}});setBackground(Color.GRAY);setLocation(300, 120);setVisible(true);while (true){try{if ((ss = new ServerSocket(9998)) != null){// taReceive.append("系统提示：已打开监听端口\n");break;}} catch (IOException e){e.printStackT race();}}while (true){try{if ((socket = ss.accept()) != null){taReceive.append("系统提示：客户端已连接\n");// 创建输入流InputStream ins = socket.getInputStream();InputStreamReader isr = new InputStreamReader(ins, "utf-8");// 此处注意一定要加上解码方式，否则汉字会出现乱码// 可用System.getProperty("file.encoding")方法获得默认编码方式br = new BufferedReader(isr);// 创建输出流OutputStream os = socket.getOutputStream();ps = new PrintStream(os);break;}} catch (IOException e){e.printStackT race();}}String receive = null;try{while (true){try{receive = br.readLine();} catch (IOException ex){ex.printStackT race();}// receive = new String(receive.getBytes("gb2312"));if (!(receive.equals(""))) taReceive.append(">>>> " + receive + "\n");}} catch (Exception ie){System.out.println("客户端已断开");try{for (int i = 3; i > 0; i--){taReceive.append("客户端已断开连接," + i + "秒后自动退出\n");Thread.sleep(1000);}System.exit(0);} catch (InterruptedException e){e.printStackT race();}}}@Overridepublic void actionPerformed(ActionEvent e){if (e.getActionCommand() == "退出"){System.out.print("服务端已停止");dispose();System.exit(0);} else this.sendMessage(taSend.getT ext().toString());}@SuppressWarnings("deprecation")private void sendMessage(String message){Date now = new Date();String time = timeFormat(now.getHours()) + ":"+ timeFormat(now.getMinutes()) + ":" + timeFormat(now.getSeconds()); if (!(message.isEmpty())){message = time + " : " + message + "\n";taReceive.append("<<<< " + message);// message = new String(message.getBytes("gbk"),"gb2312");// 发送端转码在此处不可行，系统在发送时会默认编码添加行结束符if (ps.checkError()) taReceive.append("系统提示：客户端未连接");else{ps.println(message);ps.flush();taSend.setT ext("");}} else taReceive.append("系统提示：不能发送空消息");}// 将时间格式化成常用格式public String timeFormat(int time) {if (time < 10) return "0" + time;else return "" + time;}}。