以編程方式使用情節提要設置初始視圖控制器如何以編程方式設置InitialViewController作為一個故事板？我想打開我的故事板，以一個不同的觀點，取決于某些條件，可能會有所不同的發射，發射。
3 回答
12345678_0001
TA貢獻1802條經驗 獲得超5個贊
Failed to instantiate the default view controller for UIMainStoryboardFile 'MainStoryboard' - perhaps the designated entry point is not set?
InfoMain storyboard file base nameGeneralMain Interface
application:didFinishLaunchingWithOptions:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UIViewController *viewController = // determine the initial view controller here and instantiate it with
[storyboard instantiateViewControllerWithIdentifier:<storyboard id>];
self.window.rootViewController = viewController;
[self.window makeKeyAndVisible];
return YES;}
慕姐4208626
TA貢獻1852條經驗 獲得超7個贊
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
var exampleViewController: ExampleViewController = mainStoryboard.instantiateViewControllerWithIdentifier("ExampleController")
as! ExampleViewController
self.window?.rootViewController = exampleViewController self.window?.makeKeyAndVisible()
return true}ExampleViewController
創建一個具有當前窗口大小的新窗口，并將其設置為我們的主窗口 實例化一個故事板，我們可以使用它來創建新的初始視圖控制器。 實例化我們的新的初始視圖控制器，基于它的Storyboard ID 將新窗口的根視圖控制器設置為我們剛剛啟動的新控制器 使我們的新窗口可見
猛跑小豬
TA貢獻1858條經驗 獲得超8個贊
(BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(NSDictionary *)launchOptions
- (BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
if (shouldShowAnotherViewControllerAsRoot) {
UIStoryboard *storyboard = self.window.rootViewController.storyboard;
UIViewController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"rootNavigationController"];
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
}
return YES;}- 3 回答
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