title: Selecting UITableViewCell in editing mode doesn't show rounded checkmark on the left
body: <p>I have a UITableViewController that toggles into its editing mode when the user presses a button in the toolbar. I want the user to select multiple cells and then put a rounded red checkmark on the left side of each selected cell. I've selected <em>Multiple Selection During Editing</em> in the table view in Storyboard and no accessory / editing accessory for my custom cell.</p>
  
  <p>The problem is that I can find each tapped cell in the tableView's <em>indexPathsForSelectedRows</em>, but the red checkmark on the left of each selected cell doesn't appear. However, after leaving editing mode, each selected cell shows a checkmark accessory on the right (which I don't need anymore after finishing editing).</p>
  
  <p>While editing:
  <img src="https://i.stack.imgur.com/XPEVP.png" alt="enter image description here">
  After editing:
  <img src="https://i.stack.imgur.com/Hs9g6.png" alt="enter image description here"></p>
  
  <p>Here is what I did in code:</p>
  
  <pre><code>- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
  {
     if (tableView.editing)
     {
         UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
         if ([selectedCell accessoryType] == UITableViewCellAccessoryNone)
         {
             [selectedCell setAccessoryType:UITableViewCellAccessoryCheckmark];
         }
         else
         {
             [selectedCell setAccessoryType:UITableViewCellAccessoryNone];
         }
     }
  }
  </code></pre>
  
  <p>and</p>
  
  <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
    ...
    if (tableView.editing)
    {
        cell.accessoryType = UITableViewCellAccessoryNone;
        for (NSIndexPath *selectedIndex in [self.tableView indexPathsForSelectedRows])
        {
            if ([selectedIndex isEqual:indexPath])
            {
               cell.accessoryType = UITableViewCellAccessoryCheckmark;
               break;
            }
        }
    }
    ...
  </code></pre>
  
  <p>Thanks!</p>