Bluetooth RFCOMM / SDP connection to a RS232 adapter in android

Question

I am trying to use the Bluetooth Chat sample API app that google provides to connect to a bluetooth RS232 adapter hooked up to another device. Here is the app for reference:

Answer 1

I guess it is related to a sony-ericsson phones bug (see here).

I was able to connect from/to an android 2.0 device and my mac using bluetooth and a totally made-up UUID. Trying to make the same thing with a j2me device (a sony ericsson w910i) was working only if the android was the server, otherwise I get the same exception as you.

The UUID you are using, as far as I know, is a "base address" for the spp profile, and in the ServiceClassIDList field of the ServiceRecord returned by the server device when issuing a service discovery, it should be listed AFTER the UUID you decided to use..apparentely this is not the case in some situations (e.g. my phone first listed the generic UUID and then my custom UUID).

Looks like it's the same situation here. You can try to manually change the ServiceRecord and return the proper ServiceClassIDList. Maybe it will work for you..unfortunately, my stupid cell phone refuse to change it :(

PS. a strange thing is that my mac is indeed able to see the service, even if the ServiceRecord is "broken", I guess that android just bother to see the first UUID in the ServiceClassIDList, while my pc go through the list searching every element. But this is just my supposition :)