bVNC 客户端源码分析(android)

时间：2023-01-11 08:32:58
  1. 1)登录界面
  2. 2)桌面Activity
    3)启动vnc                                                      
    4)显示桌面

  1. 1)登录界面
  2. com.iiordanov.bVNC.bVNC.java

  4. 创建登录界面（填IP，PORT等等
  5. @Override
  6. public void onCreate(Bundle icicle) {

  8.     goButton = (Button) findViewById(R.id.buttonGO);
  9.     goButton.setOnClickListener(new View.OnClickListener() {
  10.     @Override
  11.     public void onClick(View view) {
  12.         if (ipText.getText().length() != 0 && portText.getText().length() != 0)
  13.             canvasStart();
  14.         else
  15.             Toast.makeText(view.getContext(), R.string.vnc_server_empty, Toast.LENGTH_LONG).show();
  16.         }
  17.     });
  18. }



  22. private void canvasStart() {
  23.     if (selected == null) return;
  24.     MemoryInfo info = Utils.getMemoryInfo(this);
  25.     if (info.lowMemory)
  26.         System.gc();
  27.     start();
  28. }

  30. /**
  31.  * Starts the activity which makes a VNC connection and displays the remote desktop.
  32.  */
  33. private void start () {
  34.     isConnecting = true;
  35.     //从登陆界面读取数据写入bean
  36.     updateSelectedFromView();
  37.     saveAndWriteRecent();

  39.     //启动RemoteCanvasActivity, 参数为selected.Gen_getValues()
  40.     Intent intent = new Intent(this, RemoteCanvasActivity.class);
  41.     intent.putExtra(Constants.CONNECTION,selected.Gen_getValues());
  42.     startActivity(intent);
  43. }

 2)桌面Activity
  1. com.iiordanov.bVNC.RemoteCanvasActivity.java

  3. @Override
  4. public void onCreate(Bundle icicle) {
  5.     super.onCreate(icicle);
  6.     //读取bean传过来的参数
  7.     initialize();

  9.     //继续连接，也就是向VNC服务端发起连接
  10.     continueConnecting();
  11. }


  14. void continueConnecting () {

  16.     // Initialize and define actions for on-screen keys.
  17.     initializeOnScreenKeys ();

  19.     //实际发起连接
  20.     canvas.initializeCanvas(connection, database, new Runnable() {
  21.         public void run() {
  22.             try { setModes(); } catch (NullPointerException e) { }
  23.         }
  24.     });
  25. }
  26.               
  27. 3)启动vnc                                                                       
  28. com.iiordanov.bVNC.RemoteCanvas.java

  30. /**
  31.  * Create a view showing a remote desktop connection
  32.  * @param context Containing context (activity)
  33.  * @param bean Connection settings
  34.  * @param setModes Callback to run on UI thread after connection is set up
  35.  */
  36. void initializeCanvas(ConnectionBean bean, Database db, final Runnable setModes) {
  37.     
  38.     Thread t = new Thread () {
  39.         public void run() {
  40.             try {

  42.                 if (isSpice) {
  43.                     startSpiceConnection();
  44.                 } else if (isRdp) {
  45.                     startRdpConnection();
  46.                 } else if (connection.getConnectionType() < 4) {
  47.                     //启动连接
  48.                     startVncConnection();
  49.                 }
  50.             }
  51.         }
  52.     }
  53. }

  55. /**
  56.  * Starts a VNC connection using the TightVNC backend.
  57.  * @throws Exception
  58.  */
  59. private void startVncConnection() throws Exception {
  60.     Log.i(TAG, "Connecting to: " + connection.getAddress() + ", port: " + connection.getPort());
  61.     
  62.     String address = getAddress();
  63.     int vncPort = getPort(connection.getPort());
  64.     boolean anonTLS = (connection.getConnectionType() == Constants.CONN_TYPE_ANONTLS);
  65.     try {
  66.         rfb = new RfbProto(decoder, address, vncPort,
  67.                             connection.getPrefEncoding(), connection.getViewOnly());
  68.         Log.v(TAG, "Connected to server: " + address + " at port: " + vncPort);
  69.         rfb.initializeAndAuthenticate(connection.getUserName(), connection.getPassword(),
  70.                                         connection.getUseRepeater(), connection.getRepeaterId(), anonTLS);
  71.     } catch (Exception e) {
  72.         throw new Exception (getContext().getString(R.string.error_vnc_unable_to_connect) + e.getLocalizedMessage());
  73.     }
  74.     
  75.     rfbconn = rfb;
  76.     pointer = new RemoteVncPointer (rfbconn, RemoteCanvas.this, handler);
  77.     keyboard = new RemoteVncKeyboard (rfbconn, RemoteCanvas.this, handler);
  78.     
  79.     rfb.writeClientInit();
  80.     rfb.readServerInit();
  81.     initializeBitmap (displayWidth, displayHeight);
  82.     decoder.setPixelFormat(rfb);
  83.     
  84.     handler.post(new Runnable() {
  85.         public void run() {
  86.             pd.setMessage(getContext().getString(R.string.info_progress_dialog_downloading));
  87.         }
  88.     });
  89.     
  90.     sendUnixAuth ();
  91.     if (connection.getUseLocalCursor())
  92.         initializeSoftCursor();
  93.     
  94.     handler.post(drawableSetter);
  95.     handler.post(setModes);
  96.     handler.post(desktopInfo);
  97.                                                                                                                                                           
  98.     // Hide progress dialog
  99.     if (pd.isShowing())
  100.         pd.dismiss();
  101.     
  102.     rfb.processProtocol(this, connection.getUseLocalCursor());
  103. }

  105. 4)显示桌面
  106. com.iiordanov.bVNC.RfbProto.java
  107. java实现的RFB图像显示
  108. public void processProtocol () throws Exception {

  110. }

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