Android InputStream dropping first two bytes (modified BluetoothChat)

Question

I\'ve used code from BluetoothChat example to send and receive byte data from a Bluetooth Scale. The scale receives the command from the device, then sends back a byte array

Answer 1

I think the issue you are seeing with e.g. the 198 turning into -58 is because Java uses signed bytes, so anything over 127 is a negative number. So 198 binary is seen as -(256 - 198) = -58.
The solution is to convert it to an int using some code like the following:

private int UByte(byte b){
        if(b<0) // if negative
            return (int)( (b&0x7F) + 128 );
        else
            return (int)b;
    }