title: How to cancel UITableview reloaddata function in iphone
body: <p>In my application, I have pushed from oneviewcontroller to anotherviewcontroller. In that page I have started a timer and updated <code>UITableview</code> for every 1 sec (using <code>UITableview reloaddata</code>).</p>
  
  <p>I have start the timer in <code>viewwillappear</code> function and invalidate timer in <code>viewwilldisappear</code>.</p>
  
  <p>But when timer is running, when I came back to my viewcontroller my application crashed rapidly.</p>
  
  <p>Please help me? Thanks in advance...</p>
  
  <p>My guess is when i push back to viewcontroller that time tablereloads in previous viewcontroller that time it make crashes. I am using try catch but nothing makes any difference. Can we stop tableview reloads when we are not in that page?</p>