Android开发_socket编程_wifi连接电脑实现PPT控制器.docx

Android开发_socket编程_wifi连接电脑实现PPT控制器代码还是很简单的，这里不多说了，强调一下的是，client端除了一个activity的类外，还有上面的Choices类！与服务器端的类型一模一样！同时，别忘记了需要在android manifest.XML文件中添加 1 2 用户权限！别忘记添加。当然，代码还有很多需要改进的地方，比如要解决按下可能延迟PPT没有 反应，但是又不知道是否真的按下等问题，我们可以在手机端的按钮上加上一个震动的效果，这样我们就能准确的知道我们是否按下手机上的按键。这个应该不难 吧！不过本篇文章主要还是简单介绍android socket编程与PC的连接。 标签： 代码片段(2)图片 untitled.png代码 Java代码001package nate.PPT.control;002import java.awt.AWTException;003import java.awt.Robot;004import java.awt.event.KeyEvent;005import java.io.IOException;006import java.io.ObjectInputStream;007import java.io.ObjectOutputStream;008import .ServerSocket;009import .Socket;010011012013public class PPTServer 014private final static int RIGHT = 1;015private final static int LEFT = 2;016private final static int SHIFTF5 = 0;017private final static int ESC = 3;018019private static int key;020/注意这里用的输入输出流的对象021private static ObjectInputStream fromClient;022private static ObjectOutputStream fromServer;023024public static void main(String args) throws IOException,025ClassNotFoundException, AWTException, InterruptedException026ServerSocket sSocket = new ServerSocket(2011);027System.out.println(waiting a connection from the client);028Robot robot = new Robot(); 029Socket sock = sSocket.accept();030System.out.println(recv a connection);031fromClient = new ObjectInputStream(sock.getInputStream();032fromServer = new ObjectOutputStream(sock.getOutputStream();033do034Choices choice = (Choices)fromClient.readObject();035System.out.println(the flag is + choice.getKey();036key = choice.getKey();037switch(key)038039case SHIFTF5:040robot.keyPress(KeyEvent.VK_SHIFT);041Thread.sleep(20);042robot.keyPress(KeyEvent.VK_F5);043Thread.sleep(10);044robot.keyRelease(KeyEvent.VK_F5);045robot.keyRelease(KeyEvent.VK_SHIFT);046Thread.sleep(10);047break;048049case LEFT:050robot.keyPress(KeyEvent.VK_LEFT);051Thread.sleep(10);052robot.keyRelease(KeyEvent.VK_LEFT);053Thread.sleep(10);054break;055056case RIGHT:057robot.keyPress(KeyEvent.VK_RIGHT);058Thread.sleep(10);059robot.keyRelease(KeyEvent.VK_RIGHT);060Thread.sleep(10);061break;062063case ESC:064robot.keyPress(KeyEvent.VK_ESCAPE);065Thread.sleep(10);066robot.keyPress(KeyEvent.VK_ESCAPE);067Thread.sleep(10);068break;069070default:071break;072073while(key != -1);074System.out.println(exit the app);075fromClient.close();076fromServer.close();077sock.close();078sSocket.close();079080081注 意一下所用的输入输出流对象，关于这个java中已经很清楚了，就不多说。同时，本例中使用java中的Robot来模拟按键，即PPT中的快捷 键从而实现控制PPT的目的。当然，大家都知道，使用ObjectInputStream、ObjectOutputStream传输对象首先还需下面的 条件。即传送的对象所属的类，该类必须实现Serializable接口！同时注意在android手机客户端，我们需要同样拥有这样一个类型！将此 类copy过去即可，这些都是java中的知识。082package nate.PPT.control;083084import java.io.Serializable;085086public class Choices implements Serializable087088private int key;089090public Choices(int key) 091super();092this.key = key;093094095public int getKey() 096return key;097098099public void setKey(int key) 100this.key = key;101102103104105上面类包含了传输的信息数据内容。106来看看client端的代码，部署在android手机端：107package nate.PPT.control;108109import java.io.IOException;110import java.io.ObjectInputStream;111import java.io.ObjectOutputStream;112import .InetAddress;113import .Socket;114import .UnknownHostException;115import android.app.Activity;116import android.app.AlertDialog;117import android.content.DialogInterface;118import android.content.Intent;119import android.os.Bundle;120import android.view.KeyEvent;121import android.view.View;122import android.widget.Button;123124public class PPTClient extends Activity 125private Button start;126private Button escape;127private Button forward;128private Button back;129private Socket sock;130private ObjectOutputStream fromClient;131private ObjectInputStream fromServer;132private final static int RIGHT = 1;133private final static int LEFT = 2;134private final static int SHIFTF5 = 0;135private final static int ESC = 3;136137/* Called when the activity is first created. */138Override139public void onCreate(Bundle savedInstanceState) 140super.onCreate(savedInstanceState);141setContentView(R.layout.main);142143try 144/sock = new Socket(InetAddress.getByName(99),2011);145sock = new Socket(InetAddress.getByName(65),2011);146fromClient = new ObjectOutputStream(sock.getOutputStream();147fromServer = new ObjectInputStream(sock.getInputStream();148149 catch (UnknownHostException e1) 150e1.printStackTrace();151 catch (IOException e1) 152e1.printStackTrace();153154155start = (Button)this.findViewById(R.id.start);156escape = (Button)this.findViewById(R.id.escape);157forward = (Button)this.findViewById(R.id.froward);158back = (Button)this.findViewById(R.id.back);159160start.setOnClickListener(new Button.OnClickListener()161162Override163public void onClick(View v) 164Choices choice = new Choices(SHIFTF5);165try 166fromClient.writeObject(choice);167System.out.println(send the start shift + f5);168 catch (IOException e) 169e.printStackTrace();170171172173);174175escape.setOnClickListener(new Button.OnClickListener()176177Override178public void onClick(View arg0) 179Choices choice = new Choices(ESC);180try 181fromClient.writeObject(choice);182System.out.println(send the escape);183 catch (IOException e) 184e.printStackTrace();185186187);188forward.setOnClickListener(new Button.OnClickListener()189190Override191public void onClick(View v) 192Choices choice = new Choices(RIGHT);193try 194fromClient.writeObject(choice);195System.out.println(send the right (the next);196 catch (IOException e) 197e.printStackTrace();198199200201202);203back.setOnClickListener(new Button.OnClickListener()204205Override206public void onClick(View v) 207Choices choice = new Choices(LEFT);208try 209fromClient.writeObject(choice);210System.out.println(send the left (the last);211 catch (IOException e) 212e.printStackTrace();213214215);216217218/*219* 监听BACK键220* param keyCode221* param event222* return223*/224public boolean onKeyDown(int keyCode, KeyEvent event) 225 226if ( event.getKeyCode() = KeyEvent.KEYCODE_BACK)227AlertDialog.Builder builder = new AlertDialog.Builder(this);228builder.setTitle(ex