Howt to connect two devices via bluetooth sending the pairng code by parameter? JAVA-Android

Question

I\'m trying to connect via bluetooth two devices. I\'ve been able to do it, but when the connections starts the OS ask me to provide the pairing code.

What I want to

Answer 1

I think this link will help you find what you need.

I was thinking more of the "Pairing is automatically performed when you initiate an encrypted connection with the Bluetooth APIs." part of the link. I haven't tried it but was thinking that pairing automatically means no user input.

Answer 2

Calling by reflection the hidden method "setPin(byte[])" was the solution.I share the code.

private void PairDevice(BluetoothDevice pDevice, String pin)
{
    try
    {   
        Log.d("pairDevice()", "Start Pairing...");

        Method pairMethod = pDevice.getClass().getMethod("setPin", byte[].class);
        Boolean lReturn = (Boolean) pairMethod.invoke(pDevice, pin.getBytes("UTF8"));

        if(lReturn.booleanValue())
        {
            Log.d("pairDevice()", "Pairing Finished...");

            Method bondMethod = pDevice.getClass().getMethod("createBond");
            bondMethod.invoke(pDevice);
        }               
    }
    catch(Exception ex)
    {
        Log.e("pairDevice()", ex.getMessage());
    }
}   

Also, this answer with more details. Android bluetooth setpin function