基于Android的遠程視頻監控系統（含源碼）

          final Builder builder = new AlertDialog.Builder(this);   //定義一個AlertDialog.Builder對象                                        
            builder.setTitle("登錄服務器對話框");                          // 設置對話框的標題

            //裝載/res/layout/login.xml界面布局
            TableLayout loginForm = (TableLayout)getLayoutInflater().inflate( R.layout.login, null);               
            final EditText iptext = (EditText)loginForm.findViewById(R.id.ipedittext);                               
            builder.setView(loginForm);                              // 設置對話框顯示的View對象
            // 為對話框設置一個“登錄”按鈕
            builder.setPositiveButton("登錄"
                    // 為按鈕設置監聽器
                    , new OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                    //此處可執行登錄處理
                                    ipname = iptext.getText().toString().trim();
                                    Bundle data = new Bundle();
                                    data.putString("ipname",ipname);                                       
                                    Intent intent = new Intent(GetIP.this,CameraTest.class);
                                    intent.putExtras(data);
                                    startActivity(intent);
                            }
                    });
            // 為對話框設置一個“取消”按鈕
            builder.setNegativeButton("取消"
                    ,  new OnClickListener()
                    {
                            @Override
                            public void onClick(DialogInterface dialog, int which)
                            {
                                    //取消登錄，不做任何事情。
                                    System.exit(1);
                            }
                    });
            //創建、并顯示對話框
            builder.create().show();
    }

}

        （5）CameraTest.java 程序主體。設置PreviewCallback后，每當一幀圖像數據采集完成后將調用PreviewCallback的onPreviewFrame函數。在這里我們將YUV格式數據轉為jpg，再啟用線程將數據通過socket發送出去。 ? public class CameraTest extends Activity { SurfaceView sView; SurfaceHolder surfaceHolder; int screenWidth, screenHeight;
Camera camera; // 定義系統所用的照相機
boolean isPreview = false; //是否在瀏覽中 private String ipname;

    @SuppressWarnings("deprecation")
    @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // 設置全屏
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.main);

    // 獲取IP地址
    Intent intent = getIntent();
    Bundle data = intent.getExtras();
    ipname = data.getString("ipname");

            screenWidth = 640;
            screenHeight = 480;               
            sView = (SurfaceView) findViewById(R.id.sView);                  // 獲取界面中SurfaceView組件               
            surfaceHolder = sView.getHolder();                               // 獲得SurfaceView的SurfaceHolder

            // 為surfaceHolder添加一個回調監聽器
            surfaceHolder.addCallback(new Callback() {
                    @Override
                    public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {                               
                    }
                    @Override
                    public void surfaceCreated(SurfaceHolder holder) {                                                       
                            initCamera();                                            // 打開攝像頭
                    }
                    @Override
                    public void surfaceDestroyed(SurfaceHolder holder) {
                            // 如果camera不為null ,釋放攝像頭
                            if (camera != null) {
                                    if (isPreview)
                                            camera.stopPreview();
                                    camera.release();
                                    camera = null;
                            }
                        System.exit(0);
                    }               
            });
            // 設置該SurfaceView自己不維護緩沖   
            surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

}

private void initCamera() {
        if (!isPreview) {
                    camera = Camera.open();
            }
            if (camera != null && !isPreview) {
                    try{
                            Camera.Parameters parameters = camera.getParameters();                               
                            parameters.setPreviewSize(screenWidth, screenHeight);    // 設置預覽照片的大小                               
                            parameters.setPreviewFpsRange(20,30);                    // 每秒顯示20~30幀                               
                            parameters.setPictureFormat(ImageFormat.NV21);           // 設置圖片格式                               
                            parameters.setPictureSize(screenWidth, screenHeight);    // 設置照片的大小
                            //camera.setParameters(parameters);                      // android2.3.3以后不需要此行代碼
                            camera.setPreviewDisplay(surfaceHolder);                 // 通過SurfaceView顯示取景畫面                               
                    camera.setPreviewCallback(new StreamIt(ipname));         // 設置回調的類                               
                            camera.startPreview();                                   // 開始預覽                               
                            camera.autoFocus(null);                                  // 自動對焦
                    } catch (Exception e) {
                            e.printStackTrace();
                    }
                    isPreview = true;
            }
}

}

class StreamIt implements Camera.PreviewCallback { private String ipname; public StreamIt(String ipname){ this.ipname = ipname; }

@Override
public void onPreviewFrame(byte[] data, Camera camera) {
    Size size = camera.getParameters().getPreviewSize();         
    try{
            //調用image.compressToJpeg（）將YUV格式圖像數據data轉為jpg格式
        YuvImage image = new YuvImage(data, ImageFormat.NV21, size.width, size.height, null); 
        if(image!=null){
                ByteArrayOutputStream outstream = new ByteArrayOutputStream();
            image.compressToJpeg(new Rect(0, 0, size.width, size.height), 80, outstream);
            outstream.flush();
            //啟用線程將圖像數據發送出去
            Thread th = new MyThread(outstream,ipname);
            th.start();              
        } 
    }catch(Exception ex){ 
        Log.e("Sys","Error:"+ex.getMessage()); 
    }       
}

}

class MyThread extends Thread{
private byte byteBuffer[] = new byte[1024]; private OutputStream outsocket;
private ByteArrayOutputStream myoutputstream; private String ipname;

    public MyThread(ByteArrayOutputStream myoutputstream,String ipname){
            this.myoutputstream = myoutputstream;
            this.ipname = ipname;
    try {
                    myoutputstream.close();
            } catch (IOException e) {
                    e.printStackTrace();
            }
    }

public void run() {
    try{
            //將圖像數據通過Socket發送出去
        Socket tempSocket = new Socket(ipname, 6000);
        outsocket = tempSocket.getOutputStream();
        ByteArrayInputStream inputstream = new ByteArrayInputStream(myoutputstream.toByteArray());
        int amount;
        while ((amount = inputstream.read(byteBuffer)) != -1) {
            outsocket.write(byteBuffer, 0, amount);
        }
        myoutputstream.flush();
        myoutputstream.close();
        tempSocket.close();                  
    } catch (IOException e) {
        e.printStackTrace();
    }
}

}

        二、PC服務器端 ImageServer.java 用于顯示圖像，并且可以拍照 ? public class ImageServer {
public static ServerSocket ss = null;

public static void main(String args[]) throws IOException{   
        ss = new ServerSocket(6000);

    final ImageFrame frame = new ImageFrame(ss);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);

    while(true){
            frame.panel.getimage();
        frame.repaint();
    }       
}

}

/* A frame with an image panel/ @SuppressWarnings("serial") class ImageFrame extends JFrame{ public ImagePanel panel; public JButton jb;

public ImageFrame(ServerSocket ss){
           // get screen dimensions             
           Toolkit kit = Toolkit.getDefaultToolkit();
    Dimension screenSize = kit.getScreenSize();
    int screenHeight = screenSize.height;
    int screenWidth = screenSize.width;

    // center frame in screen
    setTitle("ImageTest");
    setLocation((screenWidth - DEFAULT_WIDTH) / 2, (screenHeight - DEFAULT_HEIGHT) / 2);
    setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

    // add panel to frame
    this.getContentPane().setLayout(null);
    panel = new ImagePanel(ss);
    panel.setSize(640,480);
    panel.setLocation(0, 0);
    add(panel);
    jb = new JButton("拍照");
    jb.setBounds(0,480,640,50);
    add(jb);
    saveimage saveaction = new saveimage(ss);
    jb.addActionListener(saveaction);
}

public static final int DEFAULT_WIDTH = 640;
public static final int DEFAULT_HEIGHT = 560; 

}

/* A panel that displays a tiled image/ @SuppressWarnings("serial") class ImagePanel extends JPanel {
private ServerSocket ss; private Image image; private InputStream ins;

public ImagePanel(ServerSocket ss) { 
        this.ss = ss;
}

public void getimage() throws IOException{
        Socket s = this.ss.accept();
    System.out.println("連接成功!");
    this.ins = s.getInputStream();
            this.image = ImageIO.read(ins);
            this.ins.close();
}

public void paintComponent(Graphics g){ 
    super.paintComponent(g);   
    if (image == null) return;
    g.drawImage(image, 0, 0, null);
}

}

class saveimage implements ActionListener { RandomAccessFile inFile = null; byte byteBuffer[] = new byte[1024]; InputStream ins; private ServerSocket ss;

    public saveimage(ServerSocket ss){
            this.ss = ss;
    }

    public void actionPerformed(ActionEvent event){
    try {
                    Socket s = ss.accept();
                    ins = s.getInputStream();

                    // 文件選擇器以當前的目錄打開
            JFileChooser jfc = new JFileChooser(".");
            jfc.showSaveDialog(new javax.swing.JFrame());
            // 獲取當前的選擇文件引用
            File savedFile = jfc.getSelectedFile();

            // 已經選擇了文件
            if (savedFile != null) {
                // 讀取文件的數據，可以每次以快的方式讀取數據
                try {
                                    inFile = new RandomAccessFile(savedFile, "rw");
                            } catch (FileNotFoundException e) {
                                    e.printStackTrace();
                            }
            }

        int amount;
        while ((amount = ins.read(byteBuffer)) != -1) {
            inFile.write(byteBuffer, 0, amount);
        }
        inFile.close();
        ins.close();
        s.close();
        javax.swing.JOptionPane.showMessageDialog(new javax.swing.JFrame(),
                "已接保存成功", "提示!", javax.swing.JOptionPane.PLAIN_MESSAGE);
            } catch (IOException e) {

                    e.printStackTrace();
            }
    }

}</pre>

        開放源碼如下（android我使用的是4.03的SDK，其它版本請自行更改。2.3.3版本以下的請注意initCamera()里被注釋掉的哪一行）

只能在android4.04系統的手機上運行成功哦。

下面是測試成功時的啟動畫面：