在appDelegate中访问故事板和嵌套的UIViewControllers

Question

如何访问storyboard以及appDelegate中的UIViewControllers。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    return YES;
}

Answer 1

试试这个：

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *uvc = [storyboard instantiateViewControllerWithIdentifier:@"Details"];
[self.window.rootViewController presentViewController:uvc animated:YES completion:nil];

Answer 2

对于你的UIViewController名为MyViewController并且其storyboard名称为MyViewController.storyboard的情况，你请求的代码如下所示：

// load storybord with name MyViewController.storyboard
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MyViewController" bundle:nil];

// get an instance of root view controller for the storyboard
MyViewController *viewController = [storyboard instantiateInitialViewController];