之前一直会用sockets来实现emulator和PC进行通讯，卡了几天，最后请教其他人终于可以连接了。? 错误原因是在IP和端口，IP要用本机IP（在CMD输入ipconfig，注意：每次开机本机IP都不同，ADSL是动态IP），端口用emulator的名称，5554或5556.java sever文件要另外建java工程运行，在android工程运行不了java（run application）
客户端代码：
Java代码?
package com.yarin.android.Examples_08_04;??
?
import java.io.BufferedReader;??
import java.io.BufferedWriter;??
import java.io.InputStreamReader;??
import java.io.OutputStreamWriter;??
import java.io.PrintWriter;??
import java.net.InetAddress;??
import java.net.Socket;??
?
import android.app.Activity;??
import android.os.Bundle;??
import android.util.Log;??
import android.view.View;??
import android.view.View.OnClickListener;??
import android.widget.Button;??
import android.widget.EditText;??
import android.widget.TextView;??
?
public class Activity01 extends Activity??
{??
??? private final String??????? DEBUG_TAG?? = "Activity01";??
??????
??? private TextView??? mTextView=null;??
??? private EditText??? mEditText=null;??
??? private Button????? mButton=null;??
??? /** Called when the activity is first created. */?
??? @Override?
??? public void onCreate(Bundle savedInstanceState)??
??? {??
??????? super.onCreate(savedInstanceState);??
??????? setContentView(R.layout.main);??
??????????
??????? mButton = (Button)findViewById(R.id.Button01);??
??????? mTextView=(TextView)findViewById(R.id.TextView01);??
??????? mEditText=(EditText)findViewById(R.id.EditText01);??
??????????
??????? //登陆??
??????? mButton.setOnClickListener(new OnClickListener()??
??????? {??
??????????? public void onClick(View v)??
??????????? {??
??????????????? Socket socket = null;??
??????????????? String message = mEditText.getText().toString() + "\r\n";???
??????????????? try???
??????????????? {?????
??????????????????? //创建Socket??
??????????????????? socket = new Socket("116.29.27.138",5554); //查看本机IP,每次开机都不同??
??????????????????? //socket=new Socket("192.168.1.110",50000);??
??????????????????? //向服务器发送消息??
??????????????????? PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);????????
??????????????????? out.println(message);???
??????????????????????
??????????????????? //接收来自服务器的消息??
??????????????????? BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));???
??????????????????? String msg = br.readLine();???
??????????????????????
??????????????????? if ( msg != null )??
??????????????????? {??
??????????????????????? mTextView.setText(msg);??
??????????????????? }??
??????????????????? else?
??????????????????? {??
??????????????????????? mTextView.setText("数据错误!");??
??????????????????? }??
??????????????????? //关闭流??
??????????????????? out.close();??
??????????????????? br.close();??
??????????????????? //关闭Socket??
??????????????????? socket.close();???
??????????????? }??
??????????????? catch (Exception e)???
??????????????? {??
??????????????????? // TODO: handle exception??
??????????????????? Log.e(DEBUG_TAG, e.toString());??
??????????????? }??
??????????? }??
??????? });??
??? }??
}?
package com.yarin.android.Examples_08_04;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class Activity01 extends Activity
{
private final String DEBUG_TAG = "Activity01";
private TextView mTextView=null;
private EditText mEditText=null;
private Button mButton=null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mButton = (Button)findViewById(R.id.Button01);
mTextView=(TextView)findViewById(R.id.TextView01);
mEditText=(EditText)findViewById(R.id.EditText01);
//登陆
mButton.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
Socket socket = null;
String message = mEditText.getText().toString() + "\r\n";
try
{
//创建Socket
socket = new Socket("116.29.27.138",5554); //查看本机IP,每次开机都不同
//socket=new Socket("192.168.1.110",50000);
//向服务器发送消息
PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);?????
out.println(message);
//接收来自服务器的消息
BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String msg = br.readLine();
if ( msg != null )
{
mTextView.setText(msg);
}
else
{
mTextView.setText("数据错误!");
}
//关闭流
out.close();
br.close();
//关闭Socket
socket.close();
}
catch (Exception e)
{
// TODO: handle exception
Log.e(DEBUG_TAG, e.toString());
}
}
});
}
}
服务器端代码：
Java代码?
package com.yarin.android.Examples_08_04;??
?
import java.io.BufferedReader;??
import java.io.BufferedWriter;??
import java.io.InputStreamReader;??
import java.io.OutputStreamWriter;??
import java.io.PrintWriter;??
import java.net.ServerSocket;??
import java.net.Socket;??
?
public class Server implements Runnable??
{??
??? public void run()??
??? {??
??????? try?
??????? {??
??????????? //创建ServerSocket??
??????????? ServerSocket serverSocket = new ServerSocket(5554);??
??????????? while (true)??
??????????? {??
??????????????? //接受客户端请求??
??????????????? Socket client = serverSocket.accept();??
??????????????? System.out.println("accept");??
??????????????? try?
??????????????? {??
??????????????????? //接收客户端消息??
??????????????????? BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));??
??????????????????? String str = in.readLine();??
??????????????????? System.out.println("read:" + str);????
??????????????????? //向服务器发送消息??
??????????????????? PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(client.getOutputStream())),true);????????
??????????????????? out.println("server message");???
??????????????????? //关闭流??
??????????????????? out.close();??
??????????????????? in.close();??
??????????????? }??
??????????????? catch (Exception e)??
??????????????? {??
??????????????????? System.out.println(e.getMessage());??
??????????????????? e.printStackTrace();??
??????????????? }??
??????????????? finally?
??????????????? {??
??????????????????? //关闭??
??????????????????? client.close();??
??????????????????? System.out.println("close");??
??????????????? }??
??????????? }??
??????? }??
??????? catch (Exception e)??
??????? {??
??????????? System.out.println(e.getMessage());??
??????? }??
??? }??
??? //main函数，开启服务器??
??? public static void main(String a[])??
??? {??
??????? Thread desktopServerThread = new Thread(new Server());??
??????? desktopServerThread.start();??
??? }??
}?
?
?
注：博客涉及的源码请在千寻资源库：www.qxzyk.com 下载获取，谢谢支持。
