gistfile1.m

  UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:selectedIndexPath];
  UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];
  
  //[UIView beginAnimations:nil context:nil];
  oldCell.accessoryType = UITableViewCellAccessoryNone;
  newCell.accessoryType = UITableViewCellAccessoryCheckmark;
  //[UIView commitAnimations];
  
  self.selectedIndexPath = indexPath;
  [self performSelector:@selector(deselectRow) withObject:nil afterDelay:0.0];
  return indexPath;