android socket编程client

来源：互联网发布：世界杯门票知乎编辑：程序博客网时间：2024/05/21 17:56

一个android通信的客户端实例，力求代码简洁，程序完善。
复制粘贴之后可直接运行

activity篇：

package com.mysocket.androidclient;import java.io.*;import java.net.InetSocketAddress;import java.net.Socket;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.app.Activity;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;public class MainActivity extends Activity {    private Socket mSocket;    private OutputStream mOut;    private TextView mMsgView = null;    //发送信息和接收信息的文本框    private EditText mMsgSend = null;    //定义发送信息的文本框    private Button mBtnConnect = null;   //定义一个连接按钮    private Button mBtnSend = null;     //定义发送信息的按钮    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获得UI的实例        mMsgView = (TextView) findViewById(R.id.textView_socketMsg);        mBtnConnect = (Button) findViewById(R.id.btn_connect);        mBtnSend = (Button) findViewById(R.id.btn_send);        mMsgSend = (EditText) findViewById(R.id.editText_send);        //点击“连接”按钮，建立socket连接        mBtnConnect.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                // TODO Auto-generated method stub                new Thread(new MyClientThread()).start();                mBtnConnect.setText("已   连   接");            }        });        //发送信息        mBtnSend.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                try {                    String sendStr = mMsgSend.getText().toString();                    mOut.write((sendStr + "\n").getBytes());                    mMsgSend.setText("");                    Message send = new Message();                    send.obj = "客户端：\n\t\t" + sendStr;                    mHandler.sendMessage(send);                } catch (IOException e) {                    e.printStackTrace();                }            }        });    }    public Handler mHandler = new Handler() {        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            mMsgView.append(msg.obj.toString() + "\n");        }    };    class MyClientThread implements Runnable {        @Override        public void run() {            try {                // 建立socket连接，获取输入输出流                mSocket = new Socket();                mSocket.connect(new InetSocketAddress("113.251.218.119", 8080),                        50000);                mOut = mSocket.getOutputStream();                BufferedReader in = new BufferedReader(new InputStreamReader(                        mSocket.getInputStream()));                // 读取发来服务器信息                String line = null;                while ((line = in.readLine()) != null) {                    Message reveived = new Message();                    reveived.obj = "服务器端：\n\t" + line;                    mHandler.sendMessage(reveived);                }                // 关闭各种输入输出流                in.close();                mOut.close();                mSocket.close();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }    }}

布局文件

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <LinearLayout        android:id="@+id/linearLayout1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal" >        <EditText            android:id="@+id/editText_send"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:ems="10"            android:inputType="textMultiLine" >            <requestFocus />        </EditText>        <Button            android:id="@+id/btn_send"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="0"            android:text="发 送" />    </LinearLayout>    <ScrollView        android:layout_width="match_parent"        android:layout_height="match_parent"          android:layout_weight="1">        <TextView            android:id="@+id/textView_socketMsg"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:isScrollContainer="true"            android:text="" />    </ScrollView>    <Button         android:layout_weight="0"        android:id="@+id/btn_connect"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="点 击 连 接" /></LinearLayout>

最后，别忘了加访问网络的权限

     <uses-permission android:name="android.permission.INTERNET"/>

0 0