title: Process the data received from bluetooth on android device
body: <p>I am writing an application for a project, which detects light intensity and etc.
  The application is supposed to send out command from android device to Arduino board and receive data from it. It serves as a bluetooth terminal, which I have already finished.</p>
  
  <p>Now, I want to process the data I received.
  I want:
  1, graph the data;
  2, only show data in xxx range.</p>
  
  <p>Can anyone give me a hint to start? Like what method I should use or website I can look into?</p>