title: How to use core bluetooth framework get data?
body: <p>I am working on an iOS core Bluetooth application, i can connect the bluetooth device use iphone4S , but i dont know how to communication with the device. i want to read information form the device.</p>
  
  <p>i also see this sources code <a href="https://github.com/sergiomtzlosa/CoreBluetooth-Demo/" rel="nofollow noreferrer">https://github.com/sergiomtzlosa/CoreBluetooth-Demo/</a></p>
  
  <p>and this article <a href="https://stackoverflow.com/questions/11540812/how-to-read-information-from-core-bluetooth-device">How to read information from core bluetooth device</a></p>
  
  <p>but i dont understand how to transfer data.</p>
  
  <p>can some one help me? thank you</p>