Android ad hoc wifi connection but keep internet connection -

my application creates wi-fi connection sensor means user have no connection internet long connected peripheral.

i've read not possible have 2 wifi connection without rooting device.

i guess i've read posts on stack overflow concerning topic of them quite old.

it ok if use @ least mobile network internet user able use browser or other applications while connected.

i tried set preferred network not working.

  try {         connectivitymanager connectivitymanager = (connectivitymanager) context.getsystemservice(context.connectivity_service);          if (forcemobile) {             connectivitymanager.setnetworkpreference(connectivitymanager.type_mobile);         } else {             connectivitymanager.setnetworkpreference(connectivitymanager.default_network_preference);         }     } catch (exception exc) {      } 

if connected sensor on wifi . still wont able connect internet through mobile data @ time 1 of 2 interfaces can connected in of devices(there might exceptions). best way achieve if connect sensor using bluetooth , stay connected internet on wifi or mobile data .since bluetooth , mobile data or wifi can stay connected in parallel.