Bluetooth Server Android - Client Java Bluecove. UUID?

Question

I'm writing an application to communicate between my smartphone and a computer using a bluetooth device.

I'm using Bluecove to manage the bluetooth on the computer, and the android API for my android device.

However, when I'm debugging, nothing happens. I think that the problem is that the UUID is wrong. I'm not sure how to get the devices to identify each other, in order to establish a connection.

I have read some other "questions" about those tags, but what I've tried didn't fix my problem:

Here's what I've written so far:

For tho android (Server) (This is the function that will make the connection)

public void connectSocket(){ blueAdapter.cancelDiscovery(); // Cancel discovery because it'll slow down the connection

final BluetoothServerSocket serverSocket;
BluetoothServerSocket sSocket= null;
try{
    sSocket = blueAdapter.listenUsingRfcommWithServiceRecord("BluetoothJANE", MY_UUID);
}catch(IOException e){}
serverSocket = sSocket;

Thread acceptThread = new Thread(new Runnable() {

    @Override
    public void run() {
        BluetoothSocket socket = null;
        while(true){
            try{
                socket = serverSocket.accept();
            }catch(IOException e){
                break;
            }
            if(socket != null){
                try{
                    iStream = socket.getInputStream();
                    oStream = socket.getOutputStream();
                } catch(IOException e){}
            }
        }
    }
});
acceptThread.start();

}

For java app on PC (This is the constructor of the class (it's on an independent thread) that will manage the bluetooth connection)

public ModuleBluetooth() {

StreamConnectionNotifier notifier = null;
StreamConnection connection = null;

try {
    blueDevice = LocalDevice.getLocalDevice();
    blueDevice.setDiscoverable(DiscoveryAgent.GIAC);

    String url = "btspp://localhost:" + MY_UUID.toString()
            + ";name=RemoteBluetooth";
    notifier = (StreamConnectionNotifier) Connector.open(url);

} catch (BluetoothStateException e) {
    System.out
            .println("ModuleBluetooth: Error getting the bluetooth device");
} catch (IOException e) {
}
System.out.println("waiting for connection...");
try {
    connection = notifier.acceptAndOpen();
    System.out.println("Conenction created");
} catch (IOException e) {
    System.out.println("Can not create the connection");
}

}

Could somebody please help me? Any thoughts would be very much appreciated.

I have also tried to use some functions to acquire the UUID (in android) such as, [fetchUuidsWithSdp][2] (and the related functions) but eclipse doesn't recognize that functions (It seems that they don't exist in "my" API).

http://developer.android.com/reference/android/bluetooth/BluetoothDevice.html#fetchUuidsWithSdp%28%29

score 0 · Accepted Answer · answered Jun 25 '13 at 11:48

0

Try this example, http://luugiathuy.com/2011/02/android-java-bluetooth/ . I also had problem related to UUID, in this example, Converting UUID to 00001101-0000-1000-8000-00805F9B34FB worked out of the box. See this link: http://www.avetana-gmbh.de/avetana-gmbh/produkte/doc/javax/bluetooth/UUID.html

answered Jun 25 '13 at 11:48

amit

337
1
11

Thanks!I also read those pages, but I skipped the sentence where he said that he's code (on android) was based on the BluetoothChat sample! Thanks agains! I'm so pleased – Bardo91 Jun 25 '13 at 12:52
2

Finally I manage the problem. It was that In the example the JAVA code was acting like a server as android does. But I need to program the JAVA code as a client. I used this example: http://www.miniware.net/mobile/articles/viewarticle.php?id=22 – Bardo91 Jun 25 '13 at 13:44
@Bardo91 It was in archive.org: https://web.archive.org/web/20130628121926/www.miniware.net/mobile/articles/viewarticle.php?id=22 – Davoud Jan 10 '21 at 15:05

Bluetooth Server Android - Client Java Bluecove. UUID?

1 Answers1