Question

I am trying to pair my HTC myTouch 3G with a Bluetooth device that will stream data via SPP to the phone. I have looked at the Chat examples and found them lacking for what I need due to the fact of the high data rates I will need and the Chat example does block on the UI thread. But that said my main problem is when I try to connect a device that isn’t currently paired, the Bluetooth API says that it will popup a dialog automatically if the device requires a pairing code. This never happens. How do I make sure that it does? Here is my code…

BluetoothSocket btSocket;
String macAddress = data.getStringExtra("mac");
Log.d(TAG, "Found Device " + macAddress);

// Get the Bluetooth adapter on the device
BluetoothAdapter bta = ((MyApplication)this.getApplication()).getBtState();
BluetoothDevice btDevice = bta.getRemoteDevice(macAddress);
BluetoothSocket tmp = null;
try {
    tmp = btDevice.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
} catch (IOException e) {
    e.printStackTrace();
}
if (tmp != null) {
    btSocket = tmp;
    bta.cancelDiscovery();

    try {
        btSocket.connect();
    } catch (IOException e) {
        try {
            Log.e(TAG, "------------- Close IOException");
            btSocket.close();
        } catch (IOException e2) {
            Log.e(TAG, "unable to close() socket during connection failure", e2);
        }
    }
}   

Here is the error I get too:

ERROR/BluetoothEventLoop.cpp(149): event_filter: Received signal org.bluez.Adapter:DeviceCreated from /org/bluez/14284/hci0
ERROR/BluetoothEventLoop.cpp(149): event_filter: Received signal org.bluez.Adapter:PropertyChanged from /org/bluez/14284/hci0
ERROR/BluetoothEventLoop.cpp(149): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/14284/hci0/dev_00_02_5B_00_A5_0B
ERROR/BluetoothEventLoop.cpp(149): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/14284/hci0/dev_00_02_5B_00_A5_0B
DEBUG/BluetoothService(149): updateDeviceServiceChannelCache(00:02:5B:00:A5:0B)
DEBUG/BluetoothService(149):     uuid(application): 00001101-0000-1000-8000-00805f9b34fb 1
DEBUG/BluetoothService(149): Making callback for 00001101-0000-1000-8000-00805f9b34fb with result 1
VERBOSE/BluetoothEventRedirector(13691): Received android.bleutooth.device.action.UUID
ERROR/MainApp(14272): ------------- Close IOException
ERROR/BluetoothService.cpp(149): stopDiscoveryNative: D-Bus error in StopDiscovery: org.bluez.Error.Failed (Invalid discovery session)
ERROR/BluetoothEventLoop.cpp(149): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/14284/hci0/dev_00_02_5B_00_A5_0B
VERBOSE/BluetoothEventRedirector(13691): Received android.bleutooth.device.action.UUID

One weird thing about this which seems like a bug, is that if I run this code and it fails then I turn off the Bluetooth and turn it back on the device shows up as paired in the stack. From what I understand the Bluetooth chip on the myTouch is 2.1 and the chip we are trying to connect to is 1.2

Answer 1

Again this seems to be a bug in the bluetooth for that phone, other phones with the same BT chip and version don’t have that problem