ios - 在Swift中，如何从UITableView中获取对象id并根据对象id删除对象？

Question

我不知道如何在用户选择后从 UITableView 中获取对象 ID，在另一个 View Controller 中，我想根据我已经从上一个 View 中获取的对象 ID 删除对象。

UITableView

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

        /* grab object id here and pass to NSUserDefault*/

        let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

        let deleteViewController = storyBoard.instantiateViewControllerWithIdentifier("accessView") as DeleteViewController
        self.presentViewController(deleteViewController, animated:true, completion:nil)

    }

删除 View Controller

/* Delete object happen here*/

Answer 1

您可以在 DeleteViewController 中设置一个属性，并在初始化 View Controller 时将值传递给它。

class DeleteViewController {
  var objectId: Int?
}

// Previous view controller
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

  // Grab your object from the data source
  let object = dataSource[indexPath.row]

  let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

  let deleteViewController = storyBoard.instantiateViewControllerWithIdentifier("accessView") as DeleteViewController

  // Pass the Id
  deleteViewController.objectId = object.objectId
  self.presentViewController(deleteViewController, animated:true, completion:nil)


}