wifi，tcp通信数据发送接收客户端服务器安卓源码
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//主活动
MainActivity.java文件：
package com.example.xx.yyyy;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.os.StrictMode;import android.text.method.ScrollingMovementMethod;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.ScrollView;import android.widget.TextView;import android.widget.Toast;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;public class MainActivity extends Activity { EditText IPText,PORTText, editMsgText; Button sendButtonServer, startButton; TextView recvText; ScrollView textScrollView; private Context mContext; private boolean isConnecting = false; private Thread mThreadClient = null; private Thread mThreadServer = null; private Socket mSocketServer = null; private Socket mSocketClient = null; static BufferedReader mBufferedReaderServer = null; static PrintWriter mPrintWriterServer = null; static BufferedReader mBufferedReaderClient = null; static PrintWriter mPrintWriterClient = null; private String recvMessageClient = ""; private String recvMessageServer = ""; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);//加载onCreate函数 setContentView(R.layout.activity_main);//<span style="" font-size:9.0pt;"="">载入界面activity_main mContext = this; StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskReads() .detectDiskWrites() .detectNetwork() // or .detectAll() for all detectable problems .penaltyLog() .build()); StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() .detectLeakedSqlLiteObjects() .penaltyLog() .penaltyDeath() .build()); IPText = (EditText) findViewById(R.id.IPText); PORTText = (EditText) findViewById(R.id.port); editMsgText = (EditText) findViewById(R.id.MessageText); sendButtonServer = (Button) findViewById(R.id.SendButtonServer); startButton = (Button) findViewById(R.id.CreateConnect); recvText = (TextView) findViewById(R.id.RecvText); recvText.setMovementMethod(ScrollingMovementMethod.getInstance()); textScrollView = (ScrollView) findViewById(R.id.scrollView); startButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (isConnecting) { isConnecting = false; try { if(mSocketClient!=null) { mSocketClient.close(); mSocketClient = null; mPrintWriterClient.close(); mPrintWriterClient = null; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } mThreadClient.interrupt(); startButton.setText("开始连接"); IPText.setEnabled(true); PORTText.setEnabled(true); //recvText.setText("信息:\n"); } else { isConnecting = true; startButton.setText("停止连接"); IPText.setEnabled(false); PORTText.setEnabled(false); mThreadClient = new Thread(mRunnable); mThreadClient.start(); } } }); sendButtonServer.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (isConnecting && mSocketClient!=null) { String msgText =editMsgText.getText().toString();//取得编辑框中我们输入的内容 if(msgText.length()<=0) { Toast.makeText(mContext, "<span style="" font-size:"="">发送内容不能为空！", Toast.LENGTH_SHORT).show(); } else { try { mPrintWriterClient.print(msgText);//发送给服务器 mPrintWriterClient.flush(); } catch (Exception e) { // TODO: handle exception Toast.makeText(mContext, "<span style="" font-size:"="">发送异常：" + e.getMessage(), Toast.LENGTH_SHORT).show(); } } } else { Toast.makeText(mContext, "<span style="" font-size:"="">没有连接", Toast.LENGTH_SHORT).show(); } } }); } //<span style="" font-size:9.0pt;"="">线程:监听服务器发来的消息 private Runnable mRunnable = new Runnable() { public void run() { String msgText =IPText.getText().toString(); if(msgText.length()<=0) { //Toast.makeText(mContext, "IP不能为空！", Toast.LENGTH_SHORT).show(); recvMessageClient = "IP不能为空！\n";//<span style="" font-size:9.0pt;"="">消息换行 Message msg = new Message(); msg.what = 1; mHandler.sendMessage(msg); return; } String sIP = msgText; String sPort = PORTText.getText().toString(); int port = Integer.parseInt(sPort); Log.d("gjz", "IP:" + sIP + ":" + port); try { //连接服务器 mSocketClient = new Socket(sIP, port); //portnum //取得输入、输出流 mBufferedReaderClient = new BufferedReader(new InputStreamReader(mSocketClient.getInputStream())); mPrintWriterClient = new PrintWriter(mSocketClient.getOutputStream(), true); recvMessageClient = "<span style="" font-size:"="">已经连接server!\n";//<span style="" font-size:9.0pt;"="">消息换行 Message msg = new Message(); msg.what = 1; mHandler.sendMessage(msg); //break; } catch (Exception e) { recvMessageClient = "<span style="" font-size:"="">连接IP异常:" + e.toString() + e.getMessage() + "\n";//256]; int count = 0; while (isConnecting) { try { //if ( (recvMessageClient = mBufferedReaderClient.readLine()) != null ) if((count = mBufferedReaderClient.read(buffer))>0) { recvMessageClient = getInfoBuff(buffer, count) + "\n";//<span style="" font-size:9.0pt;"="">消息换行 Message msg = new Message(); msg.what = 1; mHandler.sendMessage(msg); } } catch (Exception e) { recvMessageClient = "<span style="" font-size:"="">接收异常:" + e.getMessage() + "\n";//刷新 textScrollView.post(new Runnable() { public void run() { textScrollView.fullScroll(ScrollView.FOCUS_DOWN); } }); } }); } } }; //0; i<count; i++) { temp[i] = buff[i]; } return new String(temp); } public void onDestroy() { super.onDestroy(); if (isConnecting) { isConnecting = false; try { if(mSocketClient!=null) { mSocketClient.close(); mSocketClient = null; mPrintWriterClient.close(); mPrintWriterClient = null; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } mThreadClient.interrupt(); } if (serverRuning) { serverRuning = false; try { if(serverSocket!=null) { serverSocket.close(); serverSocket = null; } if(mSocketServer!=null) { mSocketServer.close(); mSocketServer = null; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } mThreadServer.interrupt(); } }}
<AbsoluteLayout android:layout_width="wrap_content" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="服务器ip地址" android:id="@+id/textView" android:layout_x="3dp" android:layout_y="11dp" /> <EditText android:layout_width="254dp" android:layout_height="wrap_content" android:id="@+id/IPText" android:layout_x="131dp" android:layout_y="3dp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="端口值" android:id="@+id/textView2" android:layout_x="4dp" android:layout_y="38dp" /> <EditText android:layout_width="296dp" android:layout_height="wrap_content" android:id="@+id/port" android:layout_x="74dp" android:layout_y="32dp" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="连接" android:id="@+id/CreateConnect" android:layout_x="27dp" android:layout_y="69dp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="收到的信息是：" android:id="@+id/textView3" android:layout_x="5dp" android:layout_y="132dp" /> <ScrollView android:layout_width="359dp" android:layout_height="277dp" android:id="@+id/scrollView" android:layout_x="6dp" android:layout_y="159dp" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="Large Text" android:id="@+id/RecvText" /> </ScrollView> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="发送" android:id="@+id/SendButtonServer" android:layout_x="313dp" android:layout_y="455dp" /> <EditText android:layout_width="306dp" android:layout_height="wrap_content" android:id="@+id/MessageText" android:layout_x="6dp" android:layout_y="465dp" /></AbsoluteLayout>
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.lu.wifi" > <uses-permission android:name="android.permission.WRITE_SETTINGS" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>
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