We are thermal printer manufacture based in India (Mumbai) . we have perfect solution on your requirement please see the following link. http://www.maestroselectronics.net/PrintingSolutions/Products/2bluetooth_printer
we also provide the sample apk file to you , and the SRC code to integrate printer with your application . If you want more information please contact on following details
Thanks & Regards, Sachin Nikam
Sales & Marketing Executive Maestros Electronics and Telecommunications Systems Ltd EL 44, TTC Industrial Area, Electronic Zone, Mahape, New Mumbai - 400710 (INDIA) Tel: +91 - 022-41193100/200 Mob: 09167630149