我的第一个视图控制器上有一个按钮,该按钮有一个推送到导航控制器的按钮.
我在第一个视图控制器中有这个代码来准备segue:
overrIDe func prepare(for segue: UIStoryboardSegue,sender: Any?) { if let vIEwController = segue.destination as? HistoryController { vIEwController.detailitem = barcodeInt as AnyObject } }
我的问题是当我运行我的代码并按下我的第一个控制器中的按钮时,我收到此错误:
Could not find a navigation controller for segue 'HistorySegue'. Push segues can only be used when the source controller is managed by an instance of UINavigationController.'
我的问题是,为什么我会收到此错误,我该如何解决?
我尝试了以下内容
overrIDe func prepare(for segue: UIStoryboardSegue,sender: Any?) { if let navVC = segue.destinationVIEwController as? UINavigationController{ if let historyVC = navVC.vIEwControllers[0] as? HistoryController{ historyVC.detailitem = barcodeInt as AnyObject } } }
我也试过了
overrIDe func prepare(for segue: UIStoryboardSegue,sender: Any?) { if let nav = segue.destination as? UINavigationController { if let vc = nav.visibleVIEwController as? HistoryController { vc.detailitem = barcodeInt as AnyObject } }}
我仍然得到同样的错误:
Could not find a navigation controller for segue 'HistorySegue'. Push segues can only be used when the source controller is managed by an instance of UINavigationController.'您需要将源视图控制器嵌入到导航控制器中,或将segue类型从推送更改为其他内容.此外,尝试将目标控制器转换为UINavigationController以防止在初始控制器之后出现另一个错误(如果已修复):
overrIDe func prepare(for segue: UIStoryboardSegue,sender: Any?) { if let navVC = segue.destinationVIEwController as? UINavigationController{ if let historyVC = navVC.vIEwControllers[0] as? HistoryController{ historyVC.detailitem = barcodeInt as AnyObject } } }
看看它是否适合你.
编辑:更新了上面的代码.
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