ios - 更改所选 UITableViewCell 的背景颜色

Question

我试图在单击时更改单元格的背景。类似于css的hover或者focus，怎么实现呢？

   // NO MOMENTO QUE SELECIONAR UM ITEM DO MENU    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)    {        switch(indexPath.row)        {        case 0:            var centerViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController") as! ViewController            var centerNavController = UINavigationController(rootViewController: centerViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = centerNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        case 1:            var ensinoViewController = self.storyboard?.instantiateViewControllerWithIdentifier("EnsinoViewController") as! EnsinoViewController            var ensinoNavController = UINavigationController(rootViewController: ensinoViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = ensinoNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        case 2:            var pesquisaViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PesquisaViewController") as! PesquisaViewController            var pesquisaNavController = UINavigationController(rootViewController: pesquisaViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = pesquisaNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        case 3:            var extensaoViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ExtensaoViewController") as! ExtensaoViewController            var extensaoNavController = UINavigationController(rootViewController: extensaoViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = extensaoNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        case 4:            var agendaViewController = self.storyboard?.instantiateViewControllerWithIdentifier("AgendaViewController") as! AgendaViewController            var agendaNavController = UINavigationController(rootViewController: agendaViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = agendaNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        case 5:            var telefoneViewController = self.storyboard?.instantiateViewControllerWithIdentifier("TelefoneViewController") as! TelefoneViewController            var telefoneNavController = UINavigationController(rootViewController: telefoneViewController)            var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate            appDelegate.centerContainer!.centerViewController = telefoneNavController            appDelegate.centerContainer!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)            break;        default:            println("\(menuItems[indexPath.row]) is selected");        }    }}

Answer 1

在 cellForRowAtIndexPath 中添加此代码。感谢@danh，添加了检查是否已经存在 selectedBackroundView，因此无需分配新的。

if cell.selectedBackgroundView == nil{
  cell.selectedBackroundView = UIView()
}
cell.selectedBackgroundView.backgroundColor = // your color