swift - popoverController不隔离

嗨，我有一个弹出窗口视图，显示一个数组。我想知道是否有一种方法，我可以以某种方式分离回哪个项目在数组中被选中。

 @IBAction func popOverButton(_ sender: UIButton)
{

    let controller = TableViewController()
    //This is just a regular tableViewController nothing special
     controller.modalPresentationStyle = .popover
    // configure the Popover presentation controller
    let popController: UIPopoverPresentationController? = controller.popoverPresentationController
    popController?.permittedArrowDirections = [.down]
    popController?.delegate = self
    popController?.sourceView = sender
    popController?.sourceRect = sender.bounds
    popController?.backgroundColor = .white
    self.parent?.present(controller, animated: true, completion: { })

}

Here is what it looks like
谢谢你的帮助

最佳答案

最简单的方法是创建一个委托，当选择一个单元格时，将选择传递回呈现视图控制器。然后设置UITableViewDelegate方法来调用delegate方法。像这样的：

@protocol  PopoverOptionSelectionDelegate {
    func itemSelected(item:String);
}

在演示VC中实现该方法

class PresnetingViewController, PopoverOptionSelectionDelegate {

    @IBAction func popOverButton(_ sender: UIButton) {
        let controller = TableViewController()
        controller.delegate = self //----Important---//
        //This is just a regular tableViewController nothing special
        controller.modalPresentationStyle = .popover
        // configure the Popover presentation controller
        let popController: UIPopoverPresentationController? =
        controller.popoverPresentationController
        popController?.permittedArrowDirections = [.down]
        popController?.delegate = self
        popController?.sourceView = sender
        popController?.sourceRect = sender.bounds
        popController?.backgroundColor = .white
        self.parent?.present(controller, animated: true, completion: { })
    }

    func itemSelected(item:String) {

        //DISMISS YOUR POPOVER MAYBE AND DO SOMETHING WITH "ITEM" HERE
    }

}

class TableViewController,UITableViewDelegate {
    weak var delegate:PopoverOptionSelectionDelegate?

   func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        delegate?.itemSelected(self.itemsArray[indexPath.row])
   }
}

关于swift - popoverController不隔离，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42984769/