android socket wifi 串連PC實現簡單的PPT控制器（源碼）

                                             

                                                      

以上是手機端簡單的運行

通過本文只是想來簡單介紹一下關於android socket編程。

向上伺服器端代碼：

package nate.PPT.control;import java.awt.AWTException;import java.awt.Robot;import java.awt.event.KeyEvent;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.net.ServerSocket;import java.net.Socket;public class PPTServer {private final static int RIGHT = 1;private final static int LEFT = 2;private final static int SHIFTF5 = 0;private final static int ESC = 3;private static int key;//注意這裡用的輸入輸出資料流的對象private static ObjectInputStream fromClient;private static ObjectOutputStream fromServer;public static void main(String[] args) throws IOException,ClassNotFoundException, AWTException, InterruptedException{ServerSocket sSocket = new ServerSocket(2011);System.out.println("waiting a connection from the client");Robot robot = new Robot();Socket sock = sSocket.accept();System.out.println("recv a connection");fromClient = new ObjectInputStream(sock.getInputStream());fromServer = new ObjectOutputStream(sock.getOutputStream());do{Choices choice = (Choices)fromClient.readObject();System.out.println("the flag is " + choice.getKey());key = choice.getKey();switch(key){case SHIFTF5:robot.keyPress(KeyEvent.VK_SHIFT);Thread.sleep(20);robot.keyPress(KeyEvent.VK_F5);Thread.sleep(10);robot.keyRelease(KeyEvent.VK_F5);robot.keyRelease(KeyEvent.VK_SHIFT);Thread.sleep(10);break;case LEFT:robot.keyPress(KeyEvent.VK_LEFT);Thread.sleep(10);robot.keyRelease(KeyEvent.VK_LEFT);Thread.sleep(10);break;case RIGHT:robot.keyPress(KeyEvent.VK_RIGHT);Thread.sleep(10);robot.keyRelease(KeyEvent.VK_RIGHT);Thread.sleep(10);break;case ESC:robot.keyPress(KeyEvent.VK_ESCAPE);Thread.sleep(10);robot.keyPress(KeyEvent.VK_ESCAPE);Thread.sleep(10);break;default:break;}}while(key != -1);System.out.println("exit the app");fromClient.close();fromServer.close();sock.close();sSocket.close();}}

本例中，注意一下所用的輸入輸出資料流對象，關於這個java中已經很清楚了，就不多說。同時，本例中使用java中的Robot來類比按鍵，即PPT中的快速鍵從而實現控制PPT的目的。當然，大家都知道，使用ObjectInputStream、ObjectOutputStream傳輸對象首先還需下面的條件。即傳送的對象所屬的類，該類必須實現Serializable介面！同時注意在android手機用戶端，我們需要同樣擁有這樣一個類型！！！將此類copy過去即可，這些都是java中的知識。

package nate.PPT.control;import java.io.Serializable;public class Choices implements Serializable{private int key;public Choices(int key) {super();this.key = key;}public int getKey() {return key;}public void setKey(int key) {this.key = key;}}

　　

上面類包含了傳輸的資訊資料內容。

來看看client端的代碼，部署在android手機端：

package nate.PPT.control;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.net.InetAddress;import java.net.Socket;import java.net.UnknownHostException;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.Intent;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.widget.Button;public class PPTClient extends Activity {private Button start;private Button escape;private Button forward;private Button back;private Socket sock;private ObjectOutputStream fromClient;private ObjectInputStream fromServer;private final static int RIGHT = 1;private final static int LEFT = 2;private final static int SHIFTF5 = 0;private final static int ESC = 3;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                try {//sock = new Socket(InetAddress.getByName("125.71.69.199"),2011);        sock = new Socket(InetAddress.getByName("125.70.223.165"),2011);        fromClient = new ObjectOutputStream(sock.getOutputStream());fromServer = new ObjectInputStream(sock.getInputStream());} catch (UnknownHostException e1) {e1.printStackTrace();} catch (IOException e1) {e1.printStackTrace();}                start = (Button)this.findViewById(R.id.start);        escape = (Button)this.findViewById(R.id.escape);        forward = (Button)this.findViewById(R.id.froward);        back = (Button)this.findViewById(R.id.back);                start.setOnClickListener(new Button.OnClickListener(){@Overridepublic void onClick(View v) {Choices choice = new Choices(SHIFTF5);try {fromClient.writeObject(choice);System.out.println("send the start shift + f5");} catch (IOException e) {e.printStackTrace();}}                });                escape.setOnClickListener(new Button.OnClickListener(){@Overridepublic void onClick(View arg0) {Choices  choice = new Choices(ESC);try {fromClient.writeObject(choice);System.out.println("send the escape");} catch (IOException e) {e.printStackTrace();}}        });        forward.setOnClickListener(new Button.OnClickListener(){@Overridepublic void onClick(View v) {Choices choice = new Choices(RIGHT);try {fromClient.writeObject(choice);System.out.println("send the right (the next)");} catch (IOException e) {e.printStackTrace();}}                });        back.setOnClickListener(new Button.OnClickListener(){@Overridepublic void onClick(View v) {Choices choice = new Choices(LEFT);try {fromClient.writeObject(choice);System.out.println("send the left (the last)");} catch (IOException e) {e.printStackTrace();}}        });    }        /**     * 監聽BACK鍵     * @param keyCode     * @param event     * @return     */    public boolean onKeyDown(int keyCode, KeyEvent event)     {if ( event.getKeyCode() == KeyEvent.KEYCODE_BACK){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("exit app");builder.setMessage("You will exit the app...");//builder.setIcon(R.drawable.stat_sys_warning);builder.setPositiveButton("OK",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Intent startMain = new Intent(Intent.ACTION_MAIN);startMain.addCategory(Intent.CATEGORY_HOME); startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(startMain);System.exit(0);}});builder.setNegativeButton("Cancel",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});builder.show();}return super.onKeyDown(keyCode, event);}}

 

代碼還是很簡單的，這裡不多說了，強調一下的是，client端除了一個activity的類外，還有上面的Choices類！！！與伺服器端的類型一模一樣！同時，別忘記了需要在android manifest.XML檔案中添加

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

使用者權限！！！別忘記添加。。。
當然，代碼還有很多需要改進的地方，比如要解決按下可能延遲PPT沒有反應，但是又不知道是否真的按下等問題，我們可以在手機端的按鈕上加上一個震動的效果，這樣我們就能準確的知道我們是否按下手機上的按鍵。這個應該不難吧！不過本篇文章主要還是簡單介紹android socket編程與PC的串連。

如果有朋友需要整個工程源碼的，在下面留下郵箱，我將發送給你！

由於大家需要的網友比較多，我已經將資源放在此處，http://download.csdn.net/detail/natepan/3849822，大家可以去自由下載，謝謝。