title: How can i stop the background thread from the main thread in Iphone NSthread?
body: <p>I start a background thread from my program while my main thread is checking something. If the checking goes false, I want to stop the running background thread and start it all over again with my new parameters.</p>
  
  <p>I want to stop it coz the thread will be downloading images and if I doesnt stop it and call it again, it will take a lot of time for the new images to get downloaded. Is it possible to do so?</p>