Question

我有一个问题，我想从 firstVC 调用一种方法到 seccondVC 我尝试使用这样的代码：

let storyboard: UIStoryboard = UIStoryboard.init(name: "MainScreenVC", bundle: nil)
let firstViewController: MainScreenVC = storyboard.instantiateViewController(withIdentifier: "MainScreenVC") as! MainScreenVC
firstViewController.automatingFullFill()

但是我马上收到错误，有什么不对？

我的错误：

'无法在捆绑NSBundle中找到名为'MainScreenVC'的故事板

Answer 1

如果要为每个视图控制器提供单独的故事板，则必须提供故事板名称和视图控制器名称。

let storyboard: UIStoryboard = UIStoryboard.init(name: "give storyboard name here ", bundle: nil)
let firstViewController: MainScreenVC = storyboard.instantiateViewController(withIdentifier: "viewcontrollername here") as! MainScreenVC
firstViewController.automatingFullFill()

（OR）您也可以这样称呼它

 let mainScreenVC = UIStoryboard.init(name: "give Storyboard name here", bundle: nil).instantiateViewController(withIdentifier: "viewcontroller") as! MainScreenVC

iOS如何从另一个View Controller Swift

1 个答案: