基于android的远程视频监控系统（已开放源码）

基本过程是android作为socket客户端将采集到的每一帧图像数据发送出去，PC作为服务器接收并显示每一帧图像实现远程监控。图片如下（后来PC端加了个拍照功能）。。。

（PS。刚学android和java不久很多东西还不懂，高手若是知道哪些地方可以继续优化的话还请多多指点下啊）

系统代码如下：
一、android手机客户端
（1）AndroidManifest.xml文件。添加camera和socket权限，并设置了程序开始执行的activity、

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="org.wanghai.CameraTest"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk android:minSdkVersion="15" />        <!-- 授予程序使用摄像头的权限 -->        <uses-permission android:name="android.permission.CAMERA" />         <uses-feature android:name="android.hardware.camera" />         <uses-feature android:name="android.hardware.camera.autofocus" />        <uses-permission android:name="android.permission.INTERNET"/>    <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>    <uses-permission android:name="android.permission.RESTART_PACKAGES"/>    <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name" >                        <activity            android:name=".GetIP"            android:screenOrientation="landscape"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity            android:name=".CameraTest"            android:screenOrientation="landscape"            android:label="@string/app_name" >        </activity>            </application></manifest>

　　（2）main.xml 设置surfaceview用于摄像头采集图像的预览

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >   <SurfaceView        android:id="@+id/sView"        android:layout_width="fill_parent"         android:layout_height="fill_parent"        android:scaleType="fitCenter"/></LinearLayout>

　　（3）login.xml 登录界面，用于输入服务器IP

<?xml version="1.0" encoding="utf-8"?><TableLayout xmlns:android="http://schemas.android.com/apk/res/android"        android:id="@+id/loginForm"        android:orientation="vertical"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        ><TableRow>            <TextView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="IP:"        android:textSize="10pt"        /><!-- 输入用户名的文本框 --><EditText    android:id="@+id/ipedittext"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:digits="0123456789."        android:hint="请填写服务器IP"        android:selectAllOnFocus="true"        /></TableRow></TableLayout>

　　（4）GetIP.java 获得服务器IP后，通过Intent启动CameraTest的activity，ip信息通过Bundle传递

public class GetIP extends Activity {        String ipname = null;        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        // 设置全屏        requestWindowFeature(Window.FEATURE_NO_TITLE);             getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);        setContentView(R.layout.main);                            final Builder builder = new AlertDialog.Builder(this);   //定义一个AlertDialog.Builder对象                                                         builder.setTitle("登录服务器对话框");                          // 设置对话框的标题                                //装载/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);                              // 设置对话框显示的View对象                // 为对话框设置一个“登录”按钮                builder.setPositiveButton("登录"                        // 为按钮设置监听器                        , new OnClickListener() {                                @Override                                public void onClick(DialogInterface dialog, int which) {                                        //此处可执行登录处理                                        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);                                }                        });                // 为对话框设置一个“取消”按钮                builder.setNegativeButton("取消"                        ,  new OnClickListener()                        {                                @Override                                public void onClick(DialogInterface dialog, int which)                                {                                        //取消登录，不做任何事情。                                        System.exit(1);                                }                        });                //创建、并显示对话框                builder.create().show();        }}

　　（5）CameraTest.java 程序主体。设置PreviewCallback后，每当一帧图像数据采集完成后将调用PreviewCallback的onPreviewFrame函数。在这里我们将YUV格式数据转为jpg，再启用线程将数据通过socket发送出去。

public class CameraTest extends Activity {        SurfaceView sView;        SurfaceHolder surfaceHolder;        int screenWidth, screenHeight;                Camera camera;                    // 定义系统所用的照相机                boolean isPreview = false;        //是否在浏览中        private String ipname;        @SuppressWarnings("deprecation")        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        // 设置全屏             requestWindowFeature(Window.FEATURE_NO_TITLE);             getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);        setContentView(R.layout.main);                // 获取IP地址        Intent intent = getIntent();        Bundle data = intent.getExtras();        ipname = data.getString("ipname");                                        screenWidth = 640;                screenHeight = 480;                                sView = (SurfaceView) findViewById(R.id.sView);                  // 获取界面中SurfaceView组件                                surfaceHolder = sView.getHolder();                               // 获得SurfaceView的SurfaceHolder                                // 为surfaceHolder添加一个回调监听器                surfaceHolder.addCallback(new Callback() {                        @Override                        public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {                                                        }                        @Override                        public void surfaceCreated(SurfaceHolder holder) {                                                                                        initCamera();                                            // 打开摄像头                        }                        @Override                        public void surfaceDestroyed(SurfaceHolder holder) {                                // 如果camera不为null ,释放摄像头                                if (camera != null) {                                        if (isPreview)                                                camera.stopPreview();                                        camera.release();                                        camera = null;                                }                            System.exit(0);                        }                                });                // 设置该SurfaceView自己不维护缓冲                    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);    // 设置预览照片的大小                                                                parameters.setPreviewFpsRange(20,30);                    // 每秒显示20~30帧                                                                parameters.setPictureFormat(ImageFormat.NV21);           // 设置图片格式                                                                parameters.setPictureSize(screenWidth, screenHeight);    // 设置照片的大小                                //camera.setParameters(parameters);                      // android2.3.3以后不需要此行代码                                camera.setPreviewDisplay(surfaceHolder);                 // 通过SurfaceView显示取景画面                                                        camera.setPreviewCallback(new StreamIt(ipname));         // 设置回调的类                                                                camera.startPreview();                                   // 开始预览                                                                camera.autoFocus(null);                                  // 自动对焦                        } 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{                 //调用image.compressToJpeg（）将YUV格式图像数据data转为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();                //启用线程将图像数据发送出去                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{                //将图像数据通过Socket发送出去            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服务器端
ImageServer.java 用于显示图像，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("连接成功!");        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();                                                // 文件选择器以当前的目录打开                JFileChooser jfc = new JFileChooser(".");                jfc.showSaveDialog(new javax.swing.JFrame());                // 获取当前的选择文件引用                File savedFile = jfc.getSelectedFile();                                // 已经选择了文件                if (savedFile != null) {                    // 读取文件的数据，可以每次以快的方式读取数据                    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();                }        }}

　　开放源码如下（android我使用的是4.03的SDK，其它版本请自行更改。2.3.3版本以下的请注意initCamera()里被注释掉的哪一行）

只能在android4.04系统的手机上运行成功哦。

下面是测试成功时的启动画面：

源码链接：

http://files.cnblogs.com/feifei1010/%E5%9F%BA%E4%BA%8Eandroid%E6%89%8B%E6%9C%BA%E7%9A%84%E8%BF%9C%E7%A8%8B%E8%A7%86%E9%A2%91%E7%9B%91%E6%8E%A7%E7%B3%BB%E7%BB%9F.rar

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