android中使用Socket连接进行聊天程序示例

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package com.ryg.chapter_2.socket;

import java.io.*;
import java.net.Socket;
import java.sql.Date;
import java.text.SimpleDateFormat;

import com.ryg.chapter_2.R;
import com.ryg.chapter_2.utils.MyUtils;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class TCPClientActivity extends Activity implements OnClickListener {

private static final int MESSAGE_RECEIVE_NEW_MSG = 1;
private static final int MESSAGE_SOCKET_CONNECTED = 2;

private Button mSendButton;
private TextView mMessageTextView;
private EditText mMessageEditText;

private PrintWriter mPrintWriter;
private Socket mClientSocket;

@SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_RECEIVE_NEW_MSG: {
mMessageTextView.setText(mMessageTextView.getText()
+ (String) msg.obj);
break;
}
case MESSAGE_SOCKET_CONNECTED: {
mSendButton.setEnabled(true);
break;
}
default:
break;
}
}
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tcpclient);
mMessageTextView = (TextView) findViewById(R.id.msg_container);
mSendButton = (Button) findViewById(R.id.send);
mSendButton.setOnClickListener(this);
mMessageEditText = (EditText) findViewById(R.id.msg);
Intent service = new Intent(this, TCPServerService.class);
startService(service);
new Thread() {
@Override
public void run() {
connectTCPServer();
}
}.start();
}

@Override
protected void onDestroy() {
if (mClientSocket != null) {
try {
mClientSocket.shutdownInput();
mClientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
super.onDestroy();
}

@Override
public void onClick(View v) {
if (v == mSendButton) {
final String msg = mMessageEditText.getText().toString();
if (!TextUtils.isEmpty(msg) && mPrintWriter != null) {
mPrintWriter.println(msg);
mMessageEditText.setText("");
String time = formatDateTime(System.currentTimeMillis());
final String showedMsg = "self " + time + ":" + msg + "\n";
mMessageTextView.setText(mMessageTextView.getText() + showedMsg);
}
}
}

@SuppressLint("SimpleDateFormat")
private String formatDateTime(long time) {
return new SimpleDateFormat("(HH:mm:ss)").format(new Date(time));
}

private void connectTCPServer() {
Socket socket = null;
while (socket == null) {
try {
socket = new Socket("localhost", 8688);
mClientSocket = socket;
mPrintWriter = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(socket.getOutputStream())), true);
mHandler.sendEmptyMessage(MESSAGE_SOCKET_CONNECTED);
System.out.println("connect server success");
} catch (IOException e) {
SystemClock.sleep(1000);
System.out.println("connect tcp server failed, retry...");
}
}

try {
// 接收服务器端的消息
BufferedReader br = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
while (!TCPClientActivity.this.isFinishing()) {
String msg = br.readLine();
System.out.println("receive :" + msg);
if (msg != null) {
String time = formatDateTime(System.currentTimeMillis());
final String showedMsg = "server " + time + ":" + msg
+ "\n";
mHandler.obtainMessage(MESSAGE_RECEIVE_NEW_MSG, showedMsg)
.sendToTarget();
}
}
System.out.println("quit...");
MyUtils.close(mPrintWriter);
MyUtils.close(br);
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}接收端
package com.ryg.chapter_2.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.Random;

import com.ryg.chapter_2.utils.MyUtils;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

public class TCPServerService extends Service {

private boolean mIsServiceDestoryed = false;
private String[] mDefinedMessages = new String[] {
"你好啊，哈哈",
"请问你叫什么名字呀？",
"今天北京天气不错啊，shy",
"你知道吗？我可是可以和多个人同时聊天的哦",
"给你讲个笑话吧：据说爱笑的人运气不会太差，不知道真假。"
};

@Override
public void onCreate() {
new Thread(new TcpServer()).start();
super.onCreate();
}

@Override
public IBinder onBind(Intent intent) {
return null;
}

@Override
public void onDestroy() {
mIsServiceDestoryed = true;
super.onDestroy();
}

private class TcpServer implements Runnable {

@SuppressWarnings("resource")
@Override
public void run() {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(8688);
} catch (IOException e) {
System.err.println("establish tcp server failed, port:8688");
e.printStackTrace();
return;
}

while (!mIsServiceDestoryed) {
try {
// 接受客户端请求
final Socket client = serverSocket.accept();
System.out.println("accept");
new Thread() {
@Override
public void run() {
try {
responseClient(client);
} catch (IOException e) {
e.printStackTrace();
}
};
}.start();

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

private void responseClient(Socket client) throws IOException {
// 用于接收客户端消息
BufferedReader in = new BufferedReader(new InputStreamReader(
client.getInputStream()));
// 用于向客户端发送消息
PrintWriter out = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(client.getOutputStream())), true);
out.println("欢迎来到聊天室！");
while (!mIsServiceDestoryed) {
String str = in.readLine();
System.out.println("msg from client:" + str);
if (str == null) {
break;
}
int i = new Random().nextInt(mDefinedMessages.length);
String msg = mDefinedMessages[i];
out.println(msg);
System.out.println("send :" + msg);
}
System.out.println("client quit.");
// 关闭流
MyUtils.close(out);
MyUtils.close(in);
client.close();
}

}

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