基本過程是android作為socket客戶端將采集到的每一幀圖像數據發送出去，PC作為服務器接收并顯示每一幀圖像實現遠程監控。圖片如下（后來PC端加了個拍照功能）。。。

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（PS。剛學android和java不久很多東西還不懂，高手若是知道哪些地方可以繼續優化的話還請多多指點下啊）

系統代碼如下：
一、android手機客戶端
（1）AndroidManifest.xml文件。添加camera和socket權限，并設置了程序開始執行的activity、

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<?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" /> ?????? ????<!-- 授予程序使用攝像頭的權限 --> ????????<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 設置surfaceview用于攝像頭采集圖像的預覽 ? <?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 登錄界面，用于輸入服務器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" ????????/> <!-- 輸入用戶名的文本框 --> <EditText ????android:id="@+id/ipedittext" ????????android:layout_width="fill_parent" ????????android:layout_height="wrap_content" ????????android:digits="0123456789." ????????android:hint="請填寫服務器IP" ????????android:selectAllOnFocus="true" ????????/> </TableRow> ?? </TableLayout>

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????????（4）GetIP.java 獲得服務器IP后，通過Intent啟動CameraTest的activity，ip信息通過Bundle傳遞 ? public class GetIP?extends Activity { ????????String ipname =?null; ????????@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);?????? ???????? ??????????????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(); ????????????????} ????????} }

????????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：

?android_video.rar

轉自：http://www.cnblogs.com/feifei1010/archive/2012/08/31/2664939.html

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