Android2

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，55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\//查看本机IP,每次开机都不同

//socket=new Socket(\"192.168.1.110\ //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\查看本机IP,每次开机都不同 //socket=new Socket(\"192.168.1.110\//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(55); 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 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 OutputStreamWriter(client.getOutputStream())),true); out.println(\"server message\"); //关闭流

BufferedReader(new BufferedWriter( new 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(); } }