Ios UITableVIewCell，滑动时显示编辑联系人按钮

如何在UITableViewCell上滑动时显示“编辑联系人”按钮？事件不会引发，编辑按钮也不会出现。

对于Swift 4和iOS 11+

func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
    // since the style is destructive, so it will have a red background by default.
    // change it to .normal and it will have a blue background by default..
    let editAction = UIContextualAction(style: .destructive, title: "Edit Contact") { _, _, complete in
        // continue your logic..
        // write your code to move to next screen.. Perform segue or move using storyboards..
        complete(true)
    }
    // if you want to add icon, then you can do it this way..
    editAction.image = UIImage(named: "editContact")
    // you can set your own background color for the button like this..
    editAction.backgroundColor = .orange
    let configuration = UISwipeActionsConfiguration(actions: [editAction])
    //set to false to prevent a full swipe from performing the first action..
    configuration.performsFirstActionWithFullSwipe = true
    return configuration
}

---

另外，我想为编辑联系人VC添加导航VC，并想将其与TableViewCell@NaveDulHassan5中的我的EditContact滑动按钮链接。我想使用滑动EditContact按钮从联系人屏幕导航到编辑联系人屏幕，这就是我想要的//我正试图根据单击的tableView单元格显示一个viewController//当前，如果它们都被单击，它们将重定向到同一个viewController，我将如何更改它？扩展设置svc:TableViewNew{func onClickCell（index:Int）{let aboutusVC=aboutusVC（）self.navigationController？.pushViewController（aboutusVC，动画：true）let tncVc=TermsAndConditionsVC（）self.navigationController？.pushViewController（tncVc，动画：true）}