Geek asks and answers

Receive a file via Bluetooth via OBEX Object PushProfile

I have a device that sends data via Bluetooth using OBEX Object Push Profile (OPP).

Using adb logcat, I see that my Android device is receiving a connection (but disconnect this?)

08-22 11:14:37.939: I/BtOppRfcommListener(22586): Accepted connectoin from 00:07:CF:5F:52:A0
08-22 11:14:37.939: I/BtOpp Service(22586): Start Obex Server
08-22 11:14:38.109: D/Obex ServerSession(22586): java.io.IOException: Software caused connection abort
08-22 11:14:38.109: D/PowerManagerService(180): @PowerManagement: 'BtOppObexServer' releaseWakeLock when screen locked
08-22 11:14:39.219: D/BluetoothEventLoop(180): Device property changed: 00:07:CF:5F:52:A0 property: Connected value: false

When I install Bluetooth file transfer (a free application from the market), I can receive files. But I would not want to install another application.

+5
source share
1 answer

I believe that I have a (at least partial) solution, which then should allow interception of files through OPP and added custom code. The first step is to go to settings> apps> running> Bluetooth Share and killBluetoothOppService

BluetoothAdapter ( ), . OPP . SO OPP, OPP "OK", .. os.writeByte(ObexSession.OBEX_SUCCESS | ObexSession.OBEX_FINAL_BIT);

// simplified exception handling
public class BluetoothAdapterProxy
{
    public static final int CHANNEL_OPP = 12;

    final BluetoothAdapter target;
    static final Class<?> targetClass = BluetoothAdapter.class;
    Method listenOn;

    public BluetoothAdapterProxy(BluetoothAdapter target)
    {
        this.target = target;
        Class<?>[] args = new Class[] { int.class };
        try
        {
            this.listenOn = targetClass.getDeclaredMethod(
                "listenUsingRfcommOn", args);
        }
        catch (NoSuchMethodException e)
        {
            e.printStackTrace();
        }
    }

    public BluetoothServerSocket listenUsingRfcommOn(int channel)
    {
        try
        {
            return (BluetoothServerSocket) (listenOn.invoke(target, 
                new Object[] { channel }));
        }
        catch (Exception e)
        {
            // complain loud, complain long
            throw new RuntimeException(ex);
        }
    }
}

:

serverSocket = new BluetoothAdapterProxy(BluetoothAdapter.getDefaultAdapter())
    .listenUsingRfcommOn(BluetoothAdapterProxy.CHANNEL_OPP);

Thread ( ), socket = serverSocket.accept();

+2

More articles:


All Articles