找不到导航控制器来导航另一个视图控制器

Question

我有一个包含 5 个 UIViewControllers 的自定义 UIPageViewController，现在我想从这 5 个 UIViewController 之一导航，但我不能，因为在那些 UIViewControllers没有UINavigationController。谁能建议我，如何从这 5 个 UIViewControllers 中的一个导航到其他 UIViewController？

Answer 1

您的代码 - [AppDelegate application:didFinishLaunchingWithOptions:] 可能看起来像这样（当然在检查你的跳过条件之后）：

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *vc1 = [storyboard instantiateViewControllerWithIdentifier:@"MyAuth"]; //if you assigned this ID is storyboard
UIViewController *vc2 = [storyboard instantiateViewControllerWithIdentifier:@"Login"];  //if you assigned this ID is storyboard
UIViewController *vc3 = [storyboard instantiateViewControllerWithIdentifier:@"Details"];
NSArray *controllers = @[vc1, vc2, vc3];
UINavigationController *navController = (UINavigationController *)self.window.rootViewController;
[navController setViewControllers:controllers];

如果您只将此粘贴到 - [AppDelegate application:didFinishLaunchingWithOptions:]，您会发现它会立即生效。