android 模拟器和PC用sockets通讯

 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  

1. package com.yarin.android.Examples_08_04;   
2.   
3. import java.io.BufferedReader;   
4. import java.io.BufferedWriter;   
5. import java.io.InputStreamReader;   
6. import java.io.OutputStreamWriter;   
7. import java.io.PrintWriter;   
8. import java.net.InetAddress;   
9. import java.net.Socket;   
10.   
11. import android.app.Activity;   
12. import android.os.Bundle;   
13. import android.util.Log;   
14. import android.view.View;   
15. import android.view.View.OnClickListener;   
16. import android.widget.Button;   
17. import android.widget.EditText;   
18. import android.widget.TextView;   
19.   
20. public class Activity01 extends Activity   
21. {   
22.     private final String        DEBUG_TAG   = "Activity01";   
23.        
24.     private TextView    mTextView=null;   
25.     private EditText    mEditText=null;   
26.     private Button      mButton=null;   
27.     /** Called when the activity is first created. */  
28.     @Override  
29.     public void onCreate(Bundle savedInstanceState)   
30.     {   
31.         super.onCreate(savedInstanceState);   
32.         setContentView(R.layout.main);   
33.            
34.         mButton = (Button)findViewById(R.id.Button01);   
35.         mTextView=(TextView)findViewById(R.id.TextView01);   
36.         mEditText=(EditText)findViewById(R.id.EditText01);   
37.            
38.         //登陆   
39.         mButton.setOnClickListener(new OnClickListener()   
40.         {   
41.             public void onClick(View v)   
42.             {   
43.                 Socket socket = null;   
44.                 String message = mEditText.getText().toString() + "\r\n";    
45.                 try    
46.                 {      
47.                     //创建Socket   
48.                     socket = new Socket("116.29.27.138",5554); //查看本机IP,每次开机都不同
      
49.                     //socket=new Socket("192.168.1.110",50000);
      
50.                     //向服务器发送消息   
51.                     PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);      
      
52.                     out.println(message);    
53.                        
54.                     //接收来自服务器的消息   
55.                     BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));    
56.                     String msg = br.readLine();    
57.                        
58.                     if ( msg != null )   
59.                     {   
60.                         mTextView.setText(msg);   
61.                     }   
62.                     else  
63.                     {   
64.                         mTextView.setText("数据错误!");   
65.                     }   
66.                     //关闭流   
67.                     out.close();   
68.                     br.close();   
69.                     //关闭Socket   
70.                     socket.close();    
71.                 }   
72.                 catch (Exception e)    
73.                 {   
74.                     // TODO: handle exception
      
75.                     Log.e(DEBUG_TAG, e.toString());   
76.                 }   
77.             }   
78.         });   
79.     }   
80. }  

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  

1. package com.yarin.android.Examples_08_04;   
2.   
3. import java.io.BufferedReader;   
4. import java.io.BufferedWriter;   
5. import java.io.InputStreamReader;   
6. import java.io.OutputStreamWriter;   
7. import java.io.PrintWriter;   
8. import java.net.ServerSocket;   
9. import java.net.Socket;   
10.   
11. public class Server implements Runnable   
12. {   
13.     public void run()   
14.     {   
15.         try  
16.         {   
17.             //创建ServerSocket   
18.             ServerSocket serverSocket = new ServerSocket(5554);   
19.             while (true)   
20.             {   
21.                 //接受客户端请求   
22.                 Socket client = serverSocket.accept();   
23.                 System.out.println("accept");   
24.                 try  
25.                 {   
26.                     //接收客户端消息   
27.                     BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));   
28.                     String str = in.readLine();   
29.                     System.out.println("read:" + str);     
30.                     //向服务器发送消息   
31.                     PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(client.getOutputStream())),true);      
      
32.                     out.println("server message");    
33.                     //关闭流   
34.                     out.close();   
35.                     in.close();   
36.                 }   
37.                 catch (Exception e)   
38.                 {   
39.                     System.out.println(e.getMessage());   
40.                     e.printStackTrace();   
41.                 }   
42.                 finally  
43.                 {   
44.                     //关闭   
45.                     client.close();   
46.                     System.out.println("close");   
47.                 }   
48.             }   
49.         }   
50.         catch (Exception e)   
51.         {   
52.             System.out.println(e.getMessage());   
53.         }   
54.     }   
55.     //main函数，开启服务器   
56.     public static void main(String a[])   
57.     {   
58.         Thread desktopServerThread = new Thread(new Server());   
59.         desktopServerThread.start();   
60.     }   
61. }