Ios eProject navigator菜单中的主脚本 然后在Info.plist中删除行主情节提要文件基名称 不要忘记删除项目目标中的-常规部署信息中的单元格-主界面（只需删除主界面即可）

之后，进入AppDelegate.swift，在函数中完成启动操作，使用选项编写下一步：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    window?.rootViewController = UINavigationController(rootViewController: ViewController())

    return true
}

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
    guard let windowScene = (scene as? UIWindowScene) else { return }

    window = UIWindow(frame: windowScene.coordinateSpace.bounds)
    window?.windowScene = windowScene
    window?.rootViewController = ViewController()
    window?.makeKeyAndVisible()
}

Xcode 11.2.1和Swift 5

首先，您需要在项目导航器菜单中删除Main.storyboard

然后在Info.plist中删除行主情节提要文件基名称

不要忘记删除项目目标-常规-部署信息中的单元格主界面（只需删除Main）

这一步很重要，以前的Xcode和Swift版本中没有这一步。在Info.plist中转到：应用程序场景清单→ 场景配置→ 应用程序会话角色→ 第0项并在此处删除故事板。名称行

在完成这些步骤后，转到SceneDelegate，并在函数场景中编写下一步：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    window?.rootViewController = UINavigationController(rootViewController: ViewController())

    return true
}

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
    guard let windowScene = (scene as? UIWindowScene) else { return }

    window = UIWindow(frame: windowScene.coordinateSpace.bounds)
    window?.windowScene = windowScene
    window?.rootViewController = ViewController()
    window?.makeKeyAndVisible()
}

---

更新：Swift 5和iOS 13:

创建一个单视图应用程序

删除Main.storyboard（右键单击并删除）

从Info.plist文件中的默认场景配置中删除“情节提要名称”：

打开

SceneDelegate.swift

并从以下位置更改

func场景

：

func场景（场景：UIScene，willConnectTo会话：UISceneSession，选项connectionOptions:UIScene.connectionOptions）{
//使用此方法可以选择性地配置UIWindow`window`并将其附加到提供的UIWindowScene`scene`。
//如果使用情节提要，“窗口”属性将自动初始化并附加到场景。
//此委托并不意味着连接的场景或会话是新的（请参见'application:ConfigurationForConnectionSceneSession'。
guard let=（场景为？UIWindowScene）else{return}
}

到

func场景（场景：UIScene，willConnectTo会话：UISceneSession，选项connectionOptions:UIScene.connectionOptions）{
//使用此方法可以选择性地配置UIWindow`window`并将其附加到提供的UIWindowScene`scene`。
//如果使用情节提要，“窗口”属性将自动初始化并附加到场景。
//此委托并不意味着连接的场景或会话是新的（请参见'application:ConfigurationForConnectionSceneSession'
如果让windowScene=场景为？UIWindowScene{
let window=UIWindow（windowScene:windowScene）
window.rootViewController=ViewController（）
self.window=window
window.makeKeyAndVisible（）的
}
}

在Xcode 11和ios 13上更新。在您设置了所有内容但仍然看到黑屏后，这是因为生命周期由UISceneDelegate处理，并且当您创建新项目时，它将自动生成UISceneDelegate.m和UISceneDelegate.h。在我们习惯UISceneDelegate之前回到过去。以下步骤可能会有所帮助：

删除plist中的应用程序场景清单

删除应用程序场景清单.h和应用程序场景清单.m

在APPdelegate.m中删除#pragma标记-UISceneSession生命周期下的代码

添加@property（强，非原子）UIWindow*窗口；在APPdelegate.h中

---

，这是一个非常好的教程阅读此：iOS9和Xcode 7的最新教程：存在边界问题，UIScreen.mainScreen（）。边界正在打印：（0.0,0.0320.0480.0）。为什么？我喜欢保留

LaunchScreen.xib

和相应的

Info.plist

条目。没有它，这个应用程序就不会占据更大的iPhone的整个屏幕，这很难看。我喜欢自己保留故事板。创建各种内容很方便，但我需要在不依赖情节提要的情况下进行初始设置。可能是Xcode 7中的错误，我根本无法从项目信息设置屏幕中删除Main.storyboard。我使用了@Silentwarrior提到的Xcode 5空应用程序模板。除非手动安装根ViewController，否则此答案会在Xcode 7中生成运行时错误：“NSInternalInconsistencyException”，原因：“应用程序窗口应在应用程序启动结束时具有根视图控制器”请同时添加以下代码：self.window.rootViewController=[[ViewController alloc]init]；在AppDelegate.m中，使用didFinishLaunchingWithOptions方法。否则您将得到以下错误：“应用程序窗口在应用程序启动结束时应该有一个根视图控制器”谢谢。请注意，您需要在Xcode更新后替换此模板。如果您将其放入~/Library/Developer/Xcode/Templates/Project Templates/iOS/Application/中，则不必每次Xcode更新时都替换它updates@harrisg在约塞米蒂找不到此目录。你能证实它的存在吗？感谢此方法适用于Xcode 7.1，但是创建的LaunchScreen.storyboard可能不是某些人想要的。我最终使用了它，因为它不会干扰我手动创建的视图。请记住将文件解压缩到目录中，复制是不够的。如果我只是删除情节提要文件而没有手动从中删除相应的引用，则使用Xcode 9.1和Swift 4。plist会出现错误“无法在捆绑包中找到名为“Main”的情节提要”。似乎我必须手动删除引用。您还必须从Info.plist中删除“主故事板文件基名称”，否则会出现错误

#import <Availability.h>

#ifndef __IPHONE_3_0
#warning "This project uses features only available in iOS SDK 3.0 and later."
#endif

#ifdef __OBJC__
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#endif

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
//Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];

return YES;

//AppDelegate.h


@property (strong, nonatomic) UIViewController *viewController;
@property (strong, nonatomic) UINavigationController *nav;

//AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {`enter code here`
    // Override point for customization after application launch.

    CGRect screenBounds = [[UIScreen mainScreen] bounds];

    UIWindow *window = [[UIWindow alloc] initWithFrame:screenBounds];


    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];



    self.viewController = [[UIViewController alloc] initWithNibName:@"ViewController" bundle:nil];

    self.nav = [[UINavigationController alloc] initWithRootViewController:self.viewController];

    [window setRootViewController:  self.nav];

    [window makeKeyAndVisible];

    [self setWindow:window];

    return YES;
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    MyViewController *viewController = [[MyViewController alloc] initWithNibName:@"MyViewController" bundle:nil];
    self.window.rootViewController = viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

    let initialViewController = UIViewController()
    initialViewController.view.backgroundColor = .white
    window = UIWindow(frame: UIScreen.main.bounds)
    window?.rootViewController = initialViewController
    window?.makeKeyAndVisible()

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    let window = UIWindow(frame: UIScreen.main.bounds)
    window.backgroundColor = .white
    window.rootViewController = MyRootViewController()
    window.makeKeyAndVisible()
    self.window = window

    return true
}

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    window?.rootViewController = UINavigationController(rootViewController: ViewController())

    return true
}

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
    guard let windowScene = (scene as? UIWindowScene) else { return }

    window = UIWindow(frame: windowScene.coordinateSpace.bounds)
    window?.windowScene = windowScene
    window?.rootViewController = ViewController()
    window?.makeKeyAndVisible()
}