Question

I have been challenged by a professor to develop a little Bluetooth Demo app on Android. I knew nothing about developping for Android until 2 weeks ago when he gave me that challenge. I’m also quite new at Java programming in general, so I’m starting from far. But anyway…

So I did most of the tutorial, and I read about Bluetooth in Android, looked at the Bluetooth Chat sample code, and I’m now trying to do my little app. So for my demo, I will try to establish a connection between my real phone and my Bluetooth mouse. I want to move a shape on the screen of my phone in response to my mouse movement.

I encounter many problem, but so far my main one is to open a socket with my unsecure mouse. When I try using the method listenUsingRfcommWithServiceRecord, it ask a UUID as a parameter. But my mouse most likely doesn’t have a UUID to respond, so I guess this method is not the good one.

When I read the documentation about this method, it says that to open an unsecure server socket with a device like a mouse, I must use the listenUsingInsecureRfcommWithServiceRecord method. But this method is not available when I call it, it gets underlined in red and Eclipse says that it is undefined for the type BluetoothAdapter.

private BluetoothServerSocket connectDevice(BluetoothAdapter adapter, BluetoothDevice device){
    BluetoothServerSocket socket = null;
    try{
        socket = adapter.listenUsingInsecureRfcommWithServiceRecord(device.getName(), UUID.randomUUID());
    }
    catch(IOException e){
        Toast.makeText(this, "Connection failed.\n" + e.getMessage(), Toast.LENGTH_SHORT);
    }

    return socket;
}

Please don’t flame me if I’m doing it all wrong, it’s my first question here and I’m starting with Java programming.

Answer 1

listenUsingInsecureRfcommWithServiceRecord()

This is only available on API Level 10 and later, i.e., Android v2.3.3 onwards.

That may be the problem if you’re building for a version previous to that.

See to the right-hand side of the grey bar in the docs

EDIT: In light of the fact it isn’t possible to extend BluetoothAdapter, listenUsingInsecureRfcommWithServiceRecord() simply does this…

return createNewRfcommSocketAndRecord(name, uuid, false, false);

The source for createNewRfcommSocketAndRecord() (which is a private method of BluetoothAdapter), can be found here…createNewRfcommSocketAndRecord

Not sure if will help but you might be able to reproduce its functionality.