Bluetooth Socket Not Connecting, Unable To Pair Devices

I'm learning android and working on an project's app which uses Bluetooth. I was already able to discover and list devices. But when I try to pair devices, socket.connect() fails

Solution 1:

first you have to create BluetoothServerSocket with this method listenUsingRfcommWithServiceRecord() with the use of BluetoothAdapter:

BluetoothServerSocket mServerSocket = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);

then you can create

BluetoothSocket socket = mServerSocket.accept();

and then use

socket.connect();

After connecting with this method you have to do as below:

BluetoothDevice device = socket.getRemoteDevice();
BluetoothSocket tmp = device.createRfcommSocketToServiceRecord(DEVICE_UUID);
tmp.connect();

So let me clear you that you are using createRfcommSocketToServiceRecord() method directly and try to connect socket but instead of that try this way. i hope it will clear your doubts now.

But please remember that, listenUsingRfcommWithServiceRecord() is long background process method so take care it with thread or async task. hope it helps. thanks!!