ios - 通过 NavigationController 传递数据

Question

我有一个 UIViewController嵌入 UINavigationController .我想介绍这个viewController并且在展示之后我还需要导航方法(Push & Pop)所以我展示UINavigationController而不是 UIViewController但为此我需要将自定义数据传递给 ViewController截至目前，我无法访问该 ViewController形成上一个 ViewController .
这是我的代码。

UINavigationController *navigationController = [self.storyboard instantiateViewControllerWithIdentifier:@"MyNavigationIdentity"]];

[self presentViewController:navigationController animated:YES completion:nil];

P.S I cannot alloc and init new navigationController as I am designing my navigationController from Storyboard.

Answer 1

您可以访问您的 viewController来自 viewControllers UINavigationController 的属性(property).

if (navigationController.viewControllers.count > 0) {
     //Cast UIViewController with your custom Controller
     ViewController *vc = (ViewController*) [navigationController.viewControllers firstObject];
     //Now pass data you want
     vc.passData = ...
}