I'm trying to add support for a bluetooth device in one of our applications
based on the code from the latest Bluetooth Chat example on GitHub. On every
attempt to perform socket.Connect() I get the Java.IO.IOException "Service
discovery failed".
This happens both in my application and when I try to run the Bluetooth Chat
sample with two separate devices (Printer and RFID reader). I have used both
devices in a 3rd party apps and all works fine. I have used both a Galaxy
Tab
Thanks for any help.
This is the most stripped down version of the test code.
string mac = "00:17:51:04:6E:C4";
// static UUID MY_UUID = UUID.FromString(
"00001101-0000-1000-8000-00805F9B34FB" );
static UUID MY_UUID = UUID.FromString(
"fa87c0d0-afac-11de-8a39-0800200c9a66" );
const int btEnableID = 1;
BluetoothAdapter bluetoothAdapter = null;
BluetoothDevice device = null;
BluetoothSocket socket = null;
void testBtn_Click( object sender, EventArgs e )
{
bluetoothAdapter = BluetoothAdapter.DefaultAdapter;
if( bluetoothAdapter == null )
{
Toast.MakeText( this, "Bluetooth is not available", ToastLength.Long
).Show();
return;
}
if (!bluetoothAdapter.IsEnabled)
{
Intent enableIntent = new Intent (BluetoothAdapter.ActionRequestEnable);
StartActivityForResult (enableIntent, btEnableID );
}
else BluetoothIsEnabled();
}
void BluetoothIsEnabled()
{
device = bluetoothAdapter.GetRemoteDevice( mac );
if( device == null )
{
Toast.MakeText( this, "Cannot get Bluetooth Device", ToastLength.Long
).Show();
return;
}
try
{
bluetoothAdapter.CancelDiscovery();
socket = device.CreateRfcommSocketToServiceRecord( MY_UUID );
}
catch( Java.IO.IOException e )
{
Toast.MakeText( this, "Cannot Create Socket", ToastLength.Long ).Show();
return;
}
if ( socket == null )
{
Toast.MakeText( this, "Null Socket", ToastLength.Long ).Show();
return;
}
try
{
socket.Connect();
}
catch( Java.IO.IOException e )
{
Toast.MakeText( this, "Cannot Connect Socket", ToastLength.Long
).Show();
Utl.ShowError( e.Message, "Connect Error" );
return;
}
Toast.MakeText( this, "Success Connect", ToastLength.Long ).Show();
}
Steve Sharrock
Architecture/Design/Programming
www.sharkcode.com <blocked::http://www.sharkcode.com/>
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