Service discovery failed android bluetooth

Question

I am developing a code to communicate to custom bluetooth circuit from Micromax Tab. Till socket creation it works fine. But when i try to connect it fails saying either Service discovery failed or host is down. I tried all the possible posts referring to this topic mentioning same problem. But end up getting same errors. I tried to change UUID but nothing works. Any clues? Below is my code:

final BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        if (mBluetoothAdapter == null) {
              Toast.makeText(this, "Bluetooth not found",Toast.LENGTH_LONG).show();
        }

        if (!mBluetoothAdapter.isEnabled()) {
            Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
            startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
        }

        Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
     // If there are paired devices
     if (pairedDevices.size() > 0) {
         // Loop through paired devices
         for (BluetoothDevice device : pairedDevices) {
             // Add the name and address to an array adapter to show in a ListView
             if(device.getName().equals("linvor"))
             {
                 mmDevice = device;
                 Toast.makeText(this, "Name: " + device.getName() + " And Address: " + device.getAddress(),Toast.LENGTH_LONG).show();
             }

         }
     }
     mBluetoothAdapter.cancelDiscovery();
     BluetoothSocket tmp = null;
    // UUID uuid = UUID.fromString("00001105-0000-1000-8000-00805F9B34FB");

     // MY_UUID is the app's UUID string, also used by the server code
      //  tmp = mmDevice.createRfcommSocketToServiceRecord(uuid);
     Method m = null;
    try {
        m = mmDevice.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
        try {
            tmp = (BluetoothSocket) m.invoke(mmDevice, 1);
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
        } catch (InvocationTargetException e) {
            // TODO Auto-generated catch block
            Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
        }
    } catch (NoSuchMethodException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
     try {
        tmp = (BluetoothSocket) m.invoke(mmDevice, 1);
    } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
    } catch (IllegalAccessException e) {
        // TODO Auto-generated catch block
        Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
    } catch (InvocationTargetException e) {
        // TODO Auto-generated catch block
        Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
    }


     Toast.makeText(getBaseContext(), "Created socket",Toast.LENGTH_LONG).show();
     mmSocket = tmp;
     mBluetoothAdapter.cancelDiscovery();
     Toast.makeText(getBaseContext(), "Discovery cancelled",Toast.LENGTH_LONG).show();
     try {
         // Connect the device through the socket. This will block
         // until it succeeds or throws an exception
         mmSocket.connect();
         Toast.makeText(getBaseContext(), "Connected",Toast.LENGTH_LONG).show();
     } catch (IOException e1) {
         // Unable to connect; close the socket and get out
         Toast.makeText(getBaseContext(), e1.getMessage(),Toast.LENGTH_LONG).show();
         try {
             mmSocket.close();
         } catch (IOException e) { 
            Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_LONG).show();
         }
     }

what you are asking.Are u want to pair another remote device or send data to that device... — Satheesh, Aug 01 '13 at 09:18
Send the data to the device. I have already paired manually. And trying to connect with the socket to send the data. The other device is a circuit having bluetooth modem — Prasad Dixit, Aug 01 '13 at 09:32
wait i will send sample code to connect and send data to that device — Satheesh, Aug 01 '13 at 09:34

score 0 · Accepted Answer · edited May 23 '17 at 12:05

You are using this one to send image...

@Override
                        protected void onPostExecute(Void result) {
                            if(selectedImageURI!=null)
                            {
                            ContentValues values = new ContentValues();
                            values.put(BluetoothShare.URI, selectedImageURI.toString());
                            Toast.makeText(getBaseContext(), "URi : " + selectedImageURI,
                                    Toast.LENGTH_LONG).show();
                            values.put(BluetoothShare.DESTINATION, addressPairedDevice);
                            values.put(BluetoothShare.DIRECTION,
                                    BluetoothShare.DIRECTION_OUTBOUND);
                            Long ts = System.currentTimeMillis();
                            values.put(BluetoothShare.TIMESTAMP, ts);
                            getContentResolver().insert(BluetoothShare.CONTENT_URI,
                                    values);
                            }

BluetoothShare.java is in the link

How to send file using bluetooth on android programatically?

How to send file from Android device to other device through Bluetooth by code

Thanks Satheesh. But I would like to send a simple string as a message from tablet to my custom circuit port. Do you have any such code? — Prasad Dixit, Aug 01 '13 at 09:46
see the below above second link...if my answer is useful for you vote me — Satheesh, Aug 01 '13 at 10:12
I discovered the problem. It was completely my fault. The receiving device was down due to low battery level. Anyway thanks for the help and will surely vote to you. — Prasad Dixit, Aug 02 '13 at 05:03

Service discovery failed android bluetooth

1 Answers1