附件类型覆盖表视图上的索引单击

Question

当我点击右侧的索引时，除非我点击最右侧的像素，否则它会激活附件按钮。如何使配件按钮的宽度变小，以便点击不要覆盖索引列表？

func tableView(tableView: UITableView,
    accessoryButtonTappedForRowWithIndexPath indexPath: NSIndexPath) {
        self.container = self.fetchedResultsController?.objectAtIndexPath(indexPath) as? NSManagedObject
}

也许这是相互矛盾的：

    cell.imageView.contentMode = UIViewContentMode.ScaleToFill;
    cell.imageView.layer.cornerRadius = 42.5; // 85 x 85
    cell.imageView.layer.masksToBounds = true;
    cell.imageView.transform = CGAffineTransformMakeScale(0.4, 0.4);
    cell.imageView.layer.borderWidth = 3;
    cell.imageView.layer.borderColor = UIColor(white:0.2, alpha:0.4).CGColor;