Ios VCs之间的快速传递数据

我是Swift的新手，我想知道为什么我从Obj-C翻译的这段代码在这里不起作用

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "scoreDetail" {
            let indexPath = self.tableView.indexPathForSelectedRow()
            let object = self.fetchedResultsController.objectAtIndexPath(indexPath) as NSManagedObject

            let itemVC: ScoreVC = segue.destinationViewController as ScoreVC
            itemVC.detailItem = object
        }
    }

这是故事板。我有一个

Show Replace

segue从单元格到

uinavigator控制器

单击

UITableViewCell

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问题与Swift无关。destinationViewController是导航控制器，而不是ScoreVC，因此您从中翻译的代码也不应该工作（如果它具有相同的设置）。应该是这样的,

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "scoreDetail" {
            let indexPath = self.tableView.indexPathForSelectedRow()
            let object = self.fetchedResultsController.objectAtIndexPath(indexPath) as NSManagedObject

            let nav : UINavigationController = segue.destinationViewController
            let itemVC: ScoreVC =  nav.topViewController as ScoreVC
            itemVC.detailItem = object
        }
    }

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你完全正确，我刚注意到这件事！非常感谢你