android Rest Api

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Hi,

I am working on an Android ROS project and I would like to provide mobility to the robot using transferring data through the REST API. Can anyone know that is it possible? if it is then could you able to give me the best approach to handle that problem. Because I would like to operate my robot using an android device and I am worried that if I constantly request information on Internet then my app might crash. Is there any library or tool that you can suggest that handled request Response for the ROS java.

If you could provide a platform like freedom robotics where I can integrate my robot and communicate with the robot in real-time that would be a great help.

any help much appreciated

Thank You