服务发现失败[Ljava.lang.StackTraceElement(Service discovery failed[Ljava.lang.StackTraceElement)

 我刚刚用Android和蓝牙开发我的应用程序，你可以发送消息共享文件和蓝牙聊天。 这是一个非常奇怪的应用程序，每次它显示错误和其他时间它完美的工作。 这是我的问题的首要问题 
 
 
 
 E / BluetoothEventLoop.cpp（298）：onCreateDeviceResult：D-Bus错误：org.bluez.Error.AlreadyExists（已经存在）` 
 
 
 第二个错误： 
 
 
 
 服务发现失败[Ljava.lang.StackTraceElement 
 
 
 我的代码： 
 
    private BluetoothSocket getLaSocketConnecte(BluetoothDevice myBtServer, UUID uuidToTry)           
    { 
      BluetoothSocket myBSock; 
      try 
      { 
        if (BtAdapter.isDiscovering()) 
        { 
          BtAdapter.cancelDiscovery(); 
        } 
        myBSock = myBtServer.createRfcommSocketToServiceRecord(uuidToTry);
        myBSock.connect(); 
        return myBSock; 
      } catch (Exception e) { 
        Log.i(TAG,"IOException . Msg d'erreur :" + e.getMessage()+ e.getStackTrace()); 
      } 
      return null; 
    }
 
 这是日志： 
 
04-01 20:38:28.079: I/Connexion(9240): Msg d'erreur : Msg d erreur 

:Service discovery failed
04-01 20:38:28.079: I/Connexion(9240): java.io.IOException: Service discovery failed
04-01 20:38:28.079: I/Connexion(9240):  at android.bluetooth.BluetoothSocket$SdpHelper.doSdp(BluetoothSocket.java:403)
04-01 20:38:28.079: I/Connexion(9240):  at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:213)
            myBSock.connect();
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.getLaSocketConnecte(Connexion.java:190)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.connecterA(Connexion.java:149)
            btSock = getLaSocketConnecte(btDevice, uuidList.get(i));
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.ConnecterTousLesAppreils(Connexion.java:293)
            connecterA(device.getKey());
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.EnvoyeBroadcastMsg(Connexion.java:428)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.broadcastMessage(Connexion.java:205)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.BtPaquetReceiver.onReceive(BtPaquetReceiver.java:28)
 
 能帮我解决一下这个问题吗？ 
 
 谢谢 ：） 
 

I just finished developing my Application with Android and bluetooth you can send message share files and chat with bluetooth. It's a very strange application every time it shows an error and other time it works perfectly. Here is the top of my problems
 
 
 
E/BluetoothEventLoop.cpp(298): onCreateDeviceResult: D-Bus error: org.bluez.Error.AlreadyExists (Already Exists)`
 
 
the second error : 
 
 
 
Service discovery failed[Ljava.lang.StackTraceElement
 
 
my code : 
 
    private BluetoothSocket getLaSocketConnecte(BluetoothDevice myBtServer, UUID uuidToTry)           
    { 
      BluetoothSocket myBSock; 
      try 
      { 
        if (BtAdapter.isDiscovering()) 
        { 
          BtAdapter.cancelDiscovery(); 
        } 
        myBSock = myBtServer.createRfcommSocketToServiceRecord(uuidToTry);
        myBSock.connect(); 
        return myBSock; 
      } catch (Exception e) { 
        Log.i(TAG,"IOException . Msg d'erreur :" + e.getMessage()+ e.getStackTrace()); 
      } 
      return null; 
    }
 
And here is the log : 
 
04-01 20:38:28.079: I/Connexion(9240): Msg d'erreur : Msg d erreur 

:Service discovery failed
04-01 20:38:28.079: I/Connexion(9240): java.io.IOException: Service discovery failed
04-01 20:38:28.079: I/Connexion(9240):  at android.bluetooth.BluetoothSocket$SdpHelper.doSdp(BluetoothSocket.java:403)
04-01 20:38:28.079: I/Connexion(9240):  at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:213)
            myBSock.connect();
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.getLaSocketConnecte(Connexion.java:190)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.connecterA(Connexion.java:149)
            btSock = getLaSocketConnecte(btDevice, uuidList.get(i));
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.ConnecterTousLesAppreils(Connexion.java:293)
            connecterA(device.getKey());
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.EnvoyeBroadcastMsg(Connexion.java:428)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.Connexion.broadcastMessage(Connexion.java:205)
04-01 20:38:28.079: I/Connexion(9240):  at com.Android.Bt.BtPaquetReceiver.onReceive(BtPaquetReceiver.java:28)
 
Can you please help me to figure out the solution?
 
Thanks :)
 

原文：https://stackoverflow.com/questions/15749372