If you have XML-RPC support on your Android client, the easiest way to make RTC remote functions accessible from your Android Client is to add "fmt_XMLRPC" to the "DataFormats" property of the TRtcServerModule component. For more information on type mapping between XML-RPC and the RTC Format, see this FAQ Topic:
XML-RPC vs. RTC FormatThe alternative would be to use a TRtcDataProvider component to react to custom requests from Android clients, in which case you can use any other data format (for example, JSON by using the TRtcValue class with built-in JSON parser and generator support).
Best Regards,
Danijel Tkalcec