蓝牙连接，在蟒蛇在Android（Java）的改变一些变量

Question

我想通过一个简单的按更改变量的某个值Python中的按钮在我的应用我的智能手机和我的覆盆子PI 3

我之间使用此Java代码来通过蓝牙从我的覆盆子PI获得价值：

private void startThreadConnected(BluetoothSocket socket){ 
     myThreadConnected = new ThreadConnected(socket); 
     myThreadConnected.start(); 
    } 
    /* 
    ThreadConnectBTdevice: 
    Background Thread to handle BlueTooth connecting 
    */ 


    private class ThreadConnectBTdevice extends Thread { 

     private BluetoothSocket bluetoothSocket = null; 
     private final BluetoothDevice bluetoothDevice; 
     Dialog dialog; 

     private ThreadConnectBTdevice(BluetoothDevice device, Dialog dialog) { 
      this.dialog = dialog; 
      bluetoothDevice = device; 
      connexion.setText("Déconnexion"); 

      try { 
       bluetoothSocket = device.createRfcommSocketToServiceRecord(myUUID); 
       Toast.makeText(getApplicationContext(), "Connexion établi !", Toast.LENGTH_LONG).show(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 

     @Override 
     public void run() { 
      boolean success = false; 
      try { 
       bluetoothSocket.connect(); 
       success = true; 
      } catch (IOException e) { 
       e.printStackTrace(); 

       final String eMessage = e.getMessage(); 
       runOnUiThread(new Runnable() { 

        @Override 
        public void run() { 
         Toast.makeText(MainActivity.this, "something wrong bluetoothSocket.connect(): \n" + eMessage, Toast.LENGTH_SHORT).show(); 
        } 
       }); 

       try { 
        bluetoothSocket.close(); 
       } catch (IOException e1) { 
        // TODO Auto-generated catch block 
        e1.printStackTrace(); 
       } 
      } 

      if(success){ 
       //connect successful 
      /*  final String msgconnected = "connect successful:\n" 
         + "BluetoothSocket: " + bluetoothSocket + "\n" 
         + "BluetoothDevice: " + bluetoothDevice;*/ 

       runOnUiThread(new Runnable() { 

        @Override 
        public void run() { 
         dialog.dismiss(); 
        } 
       }); 

       startThreadConnected(bluetoothSocket); 

      }else{ 
       //fail 
      } 
     } 

     public void cancel() { 

      Toast.makeText(getApplicationContext(), "Déconnexion !", Toast.LENGTH_LONG).show(); 
      try { 
       bluetoothSocket.close(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
     } 
    } 

private class ThreadConnected extends Thread { 
    private final BluetoothSocket connectedBluetoothSocket; 
    private final InputStream connectedInputStream; 
    private final OutputStream connectedOutputStream; 

    boolean running; 

    public ThreadConnected(BluetoothSocket socket) { 
     connectedBluetoothSocket = socket; 
     InputStream in = null; 
     OutputStream out = null; 
     running = true; 
     try { 
      in = socket.getInputStream(); 
      out = socket.getOutputStream(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     connectedInputStream = in; 
     connectedOutputStream = out; 
    } 

    @Override 
    public void run() { 
     final byte[] buffer = new byte[1000000]; // buffer 
     final GraphView graph=(GraphView) findViewById(R.id.graph); 

     while (running) { 
      try { 
       final int bytes; 
       bytes=connectedInputStream.read(buffer); 
       final String strReceived = new String(buffer,0, bytes); 

       final String strByteCnt = String.valueOf(bytes) + " bytes received.\n"; 
       final String terminale=new String(buffer,0,bytes); 
       runOnUiThread(new Runnable(){ 

        @Override 
        public void run() { 
         button.setOnClickListener(new View.OnClickListener(){ 
        @Override 
         public void onClick(View v) { 
         myThreadConnected.write(data like you want) 

        }}); 

      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
       cancel(); 

       final String msgConnectionLost = "Connection lost:\n" + e.getMessage(); 
       runOnUiThread(new Runnable(){ 

        @Override 
        public void run() { 

        }}); 
      } 
     } 
    } 
    public void write(byte[] buffer) { 
     try { 
      connectedOutputStream.write(buffer); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 
    public void cancel() { 
     running = false; 
     try { 
      connectedBluetoothSocket.close(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 

} 

而这种代码在python发送数据：

from bluetooth import* 

a=5 

#Bluetooth connection 
server_sock=BluetoothSocket(RFCOMM) 
server_sock.bind(("",PORT_ANY)) 
server_sock.listen(1) 

port=server_sock.getsockname()[1] 
uuid="94f39d29-7d6d-437d-973b-fba39e49d4ee" 
client_sock,client_info=server_sock.accept() 
client_sock.send(a) 

try 
    data=client_sock.recv(1024) 
    if len(data)==0: break 
    data2=float(data) 
    a=data2 
    print ("received [%f]" %a) 
except IOError: 
    pass 

现在我想从Java代码来查在Python中我的变量的值。我如何用相同的逻辑进行处理？

插图：android to python

链接有用：http://android-er.blogspot.fr/2015/11/android-bluetooth-terminal.html

谢谢！

Answer 1

我解决了这个简单：

try 
    data=client_sock.recv(1024) 
    if len(data)==0: break 
    data2=float(data) 
    a=data2 
except IOError: 
     pass