Android中蓝牙模块的使用

<uses-permission android:name="android.permission.BLUETOOTH" />  <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />  

BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();  //直接打开系统的蓝牙设置面板  Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);  startActivityForResult(intent, 0x1);  //直接打开蓝牙  adapter.enable();  //关闭蓝牙  adapter.disable();  //打开本机的蓝牙发现功能（默认打开120秒，可以将时间最多延长至300秒）  Intent discoveryIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);  discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);//设置持续时间（最多300秒）  

// 创建一个接收ACTION_FOUND广播的BroadcastReceiver  private final BroadcastReceiver mReceiver = new BroadcastReceiver() {      public void onReceive(Context context, Intent intent) {          String action = intent.getAction();          // 发现设备          if (BluetoothDevice.ACTION_FOUND.equals(action)) {              // 从Intent中获取设备对象              BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);              // 将设备名称和地址放入array adapter，以便在ListView中显示              mArrayAdapter.add(device.getName() + "\n" + device.getAddress());          }      }  };  // 注册BroadcastReceiver  IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);  registerReceiver(mReceiver, filter); // 不要忘了之后解除绑定   

private class AcceptThread extends Thread {      private final BluetoothServerSocket mmServerSocket;        public AcceptThread() {          // Use a temporary object that is later assigned to mmServerSocket,          // because mmServerSocket is final          BluetoothServerSocket tmp = null;          try {              // MY_UUID is the app‘s UUID string, also used by the client code              tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);          } catch (IOException e) { }          mmServerSocket = tmp;      }        public void run() {          BluetoothSocket socket = null;          // Keep listening until exception occurs or a socket is returned          while (true) {              try {                  socket = mmServerSocket.accept();              } catch (IOException e) {                  break;              }              // If a connection was accepted              if (socket != null) {                  // Do work to manage the connection (in a separate thread)                  manageConnectedSocket(socket);                  mmServerSocket.close();                  break;              }          }      }        /** Will cancel the listening socket, and cause the thread to finish */      public void cancel() {          try {              mmServerSocket.close();          } catch (IOException e) { }      }  }   

 private class ConnectThread extends Thread {      private final BluetoothSocket mmSocket;      private final BluetoothDevice mmDevice;        public ConnectThread(BluetoothDevice device) {          // Use a temporary object that is later assigned to mmSocket,          // because mmSocket is final          BluetoothSocket tmp = null;          mmDevice = device;            // Get a BluetoothSocket to connect with the given BluetoothDevice          try {              // MY_UUID is the app‘s UUID string, also used by the server code              tmp = device.createRfcommSocketToServiceRecord(MY_UUID);          } catch (IOException e) { }          mmSocket = tmp;      }        public void run() {          // Cancel discovery because it will slow down the connection          mBluetoothAdapter.cancelDiscovery();            try {              // Connect the device through the socket. This will block              // until it succeeds or throws an exception              mmSocket.connect();          } catch (IOException connectException) {              // Unable to connect; close the socket and get out              try {                  mmSocket.close();              } catch (IOException closeException) { }              return;          }            // Do work to manage the connection (in a separate thread)          manageConnectedSocket(mmSocket);      }        /** Will cancel an in-progress connection, and close the socket */      public void cancel() {          try {              mmSocket.close();          } catch (IOException e) { }      }  }  

private class ConnectedThread extends Thread {      private final BluetoothSocket mmSocket;      private final InputStream mmInStream;      private final OutputStream mmOutStream;        public ConnectedThread(BluetoothSocket socket) {          mmSocket = socket;          InputStream tmpIn = null;          OutputStream tmpOut = null;            // Get the input and output streams, using temp objects because          // member streams are final          try {              tmpIn = socket.getInputStream();              tmpOut = socket.getOutputStream();          } catch (IOException e) { }            mmInStream = tmpIn;          mmOutStream = tmpOut;      }        public void run() {          byte[] buffer = new byte[1024];  // buffer store for the stream          int bytes; // bytes returned from read()            // Keep listening to the InputStream until an exception occurs          while (true) {              try {                  // Read from the InputStream                  bytes = mmInStream.read(buffer);                  // Send the obtained bytes to the UI Activity                  mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)                          .sendToTarget();              } catch (IOException e) {                  break;              }          }      }        /* Call this from the main Activity to send data to the remote device */      public void write(byte[] bytes) {          try {              mmOutStream.write(bytes);          } catch (IOException e) { }      }        /* Call this from the main Activity to shutdown the connection */      public void cancel() {          try {              mmSocket.close();          } catch (IOException e) { }      }  }