[英]Load a controller embed to a UINavigationController from AppDelegate in Swift
我需要从AppDelegate显示嵌入到UINavigationController的表视图。
通常我用
let viewController: UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("prova") as ViewController
window?.rootViewController?.presentViewController(viewController, animated: false, completion: nil)
但是它不适用于嵌入式控制器,如何修改此代码?
您需要从情节UINavigationController
实例化UINavigationController
及其标识符。 导航控制器应连接到情节提要中的rootViewController并将自动显示。
let navController: UINavigationController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("provaNavController") as UINavigationController
window?.rootViewController?.presentViewController(navController, animated: false, completion: nil)
由于您没有在情节提要中设置初始视图控制器,因此请使用以下代码:
window = UIWindow(frame: UIScreen.mainScreen().bounds)
let navController: UINavigationController = UIStoryboard(name: "Main", bundle:nil).instantiateViewControllerWithIdentifier("provaNavController") as UINavigationController
window?.rootViewController = navController
window?.makeKeyAndVisible()
您还需要从常规项目设置中清除Main.storyboard:
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