blocks|key|54263|text|尝尝这个。例如:您应该使用UINavigationController作为初始视图控制器。然后，您可以从故事板中将任何视图控制器设置为root。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|54264|func+application(application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[NSObject:+AnyObject]?)+->+Bool+{
++++//+Override+point+for+customization+after+application+launch.
++++let+storyboard+=+UIStoryboard(name:+"Main",+bundle:+nil)
++++let+navigationController+=+storyboard.instantiateInitialViewController()+as+UINavigationController
++++let+rootViewController+=+storyboard.instantiateViewControllerWithIdentifier("VC")+as+UIViewController
++++navigationController.viewControllers+=+[rootViewController]
++++self.window?.rootViewController+=+navigationController
++++return+true
}|code-block|syntax|javascript|54265|请参阅my+storyboard+screen.|54266|entityMap|0|LINK|mutability|MUTABLE|url|http://joxi.ru/MAjeBg5Uv5jl2e^0|D|M|0|0|3|L|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Try this. For example:
You should use <code>UINavigationController</code> as the initial view controller. Then, you can set any view controller as root from the storyboard.
<pre><code>func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {
 // Override point for customization after application launch.
 let storyboard = UIStoryboard(name: &quot;Main&quot;, bundle: nil)
 let navigationController = storyboard.instantiateInitialViewController() as UINavigationController
 let rootViewController = storyboard.instantiateViewControllerWithIdentifier(&quot;VC&quot;) as UIViewController
 navigationController.viewControllers = [rootViewController]
 self.window?.rootViewController = navigationController
 return true
}
</code></pre>
See <a href="http://joxi.ru/MAjeBg5Uv5jl2e" rel="nofollow noreferrer">my storyboard screen.</a>

blocks|key|4560938|text|如果你没有使用故事板，你可以试试这个。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4560939|var+window:+UIWindow?
var+initialViewController+:UIViewController?

func+application(application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[NSObject:+AnyObject]?)+->+Bool+{

++++initialViewController++=+MainViewController(nibName:"MainViewController",bundle:nil)

++++let+frame+=+UIScreen.mainScreen().bounds
++++window+=+UIWindow(frame:+frame)

++++window!.rootViewController+=+initialViewController
++++window!.makeKeyAndVisible()

++++return+true
}|code-block|syntax|javascript|4560940|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if you are not using storyboard, you can try this

<pre><code>var window: UIWindow?
var initialViewController :UIViewController?

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {

 initialViewController = MainViewController(nibName:"MainViewController",bundle:nil)

 let frame = UIScreen.mainScreen().bounds
 window = UIWindow(frame: frame)

 window!.rootViewController = initialViewController
 window!.makeKeyAndVisible()

 return true
}
</code></pre>

blocks|key|54308|text|我已经用Objective-C实现过了。我希望它能对你有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|54309|UIStoryboard+*storyboard+=+[UIStoryboard+storyboardWithName:@"Main"+bundle:nil];

UIViewController+*viewController;

NSUserDefaults+*loginUserDefaults+=+[NSUserDefaults+standardUserDefaults];
NSString+*check=[loginUserDefaults+objectForKey:@"Checklog"];

if+([check+isEqualToString:@"login"])+{
++++
++++viewController+=+[storyboard+instantiateViewControllerWithIdentifier:@"SWRevealViewController"];
}+else+{
++++
++++viewController+=+[storyboard+instantiateViewControllerWithIdentifier:@"LoginViewController"];
}


self.window.rootViewController+=+viewController;
[self.window+makeKeyAndVisible];|code-block|syntax|javascript|54310|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had done it in Objective-C. I hope it will be useful for you.
<pre><code>UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@&quot;Main&quot; bundle:nil];

UIViewController *viewController;

NSUserDefaults *loginUserDefaults = [NSUserDefaults standardUserDefaults];
NSString *check=[loginUserDefaults objectForKey:@&quot;Checklog&quot;];

if ([check isEqualToString:@&quot;login&quot;]) {
 
 viewController = [storyboard instantiateViewControllerWithIdentifier:@&quot;SWRevealViewController&quot;];
} else {
 
 viewController = [storyboard instantiateViewControllerWithIdentifier:@&quot;LoginViewController&quot;];
}


self.window.rootViewController = viewController;
[self.window makeKeyAndVisible];
</code></pre>

blocks|key|4560958|text|I+worked+out+a+solution+on+Xcode+6.4+in+swift.+

//+I+saved+the+credentials+on+a+click+event+to+phone+memory

++++@IBAction+func+gotobidderpage(sender:+AnyObject)+{
+if+(usernamestring+==+"bidder"+&&+passwordstring+==+"day303")
++++++++{
++++++++++++rolltype+=+"1"

NSUserDefaults.standardUserDefaults().setObject(usernamestring,+forKey:+"username")
NSUserDefaults.standardUserDefaults().setObject(passwordstring,+forKey:+"password")
NSUserDefaults.standardUserDefaults().setObject(rolltype,+forKey:+"roll")


++++++++++++self.performSegueWithIdentifier("seguetobidderpage",+sender:+self)
}


//+Retained+saved+credentials+in+app+delegate.swift+and+performed+navigation+after+condition+check


++++func+application(application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[NSObject:+AnyObject]?)+->+Bool+{

let+usernamestring+=+NSUserDefaults.standardUserDefaults().stringForKey("username")
let+passwordstring+=+NSUserDefaults.standardUserDefaults().stringForKey("password")
let+rolltypestring+=+NSUserDefaults.standardUserDefaults().stringForKey("roll")

++++++++if+(usernamestring+==+"bidder"+&&+passwordstring+==+"day303"+&&+rolltypestring+==+"1")
++++++++{

++++++++++++//+Access+the+storyboard+and+fetch+an+instance+of+the+view+controller
++++++++++++var+storyboard+=+UIStoryboard(name:+"Main",+bundle:+nil)
++++++++++++var+viewController:+BidderPage+=+storyboard.instantiateViewControllerWithIdentifier("bidderpageID")+as!+BidderPage

++++++++++++//+Then+push+that+view+controller+onto+the+navigation+stack
++++++++++++var+rootViewController+=+self.window!.rootViewController+as!+UINavigationController
++++++++++++rootViewController.pushViewController(viewController,+animated:+true)
++++++++}

++++++++//+Override+point+for+customization+after+application+launch.
++++++++return+true
++++}



Hope+it+helps+!|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4560959|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>I worked out a solution on Xcode 6.4 in swift. 

// I saved the credentials on a click event to phone memory

 @IBAction func gotobidderpage(sender: AnyObject) {
 if (usernamestring == "bidder" &amp;&amp; passwordstring == "day303")
 {
 rolltype = "1"

NSUserDefaults.standardUserDefaults().setObject(usernamestring, forKey: "username")
NSUserDefaults.standardUserDefaults().setObject(passwordstring, forKey: "password")
NSUserDefaults.standardUserDefaults().setObject(rolltype, forKey: "roll")


 self.performSegueWithIdentifier("seguetobidderpage", sender: self)
}


// Retained saved credentials in app delegate.swift and performed navigation after condition check


 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {

let usernamestring = NSUserDefaults.standardUserDefaults().stringForKey("username")
let passwordstring = NSUserDefaults.standardUserDefaults().stringForKey("password")
let rolltypestring = NSUserDefaults.standardUserDefaults().stringForKey("roll")

 if (usernamestring == "bidder" &amp;&amp; passwordstring == "day303" &amp;&amp; rolltypestring == "1")
 {

 // Access the storyboard and fetch an instance of the view controller
 var storyboard = UIStoryboard(name: "Main", bundle: nil)
 var viewController: BidderPage = storyboard.instantiateViewControllerWithIdentifier("bidderpageID") as! BidderPage

 // Then push that view controller onto the navigation stack
 var rootViewController = self.window!.rootViewController as! UINavigationController
 rootViewController.pushViewController(viewController, animated: true)
 }

 // Override point for customization after application launch.
 return true
 }



Hope it helps !
</code></pre>

blocks|key|54349|text|这里有一个很好的方法来处理它。这个示例放置一个导航控制器作为根视图控制器，并将您选择的视图控制器放在导航堆栈的底部，以供您从其中推送所需的任何内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|54350|func+application(application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[NSObject:+AnyObject]?)+->+Bool
{
++++//+mainStoryboard
++++let+mainStoryboard+=+UIStoryboard(name:+"MainStoryboard",+bundle:+nil)

++++//+rootViewController
++++let+rootViewController+=+mainStoryboard.instantiateViewControllerWithIdentifier("MainViewController")+as?+UIViewController

++++//+navigationController
++++let+navigationController+=+UINavigationController(rootViewController:+rootViewController!)

++++navigationController.navigationBarHidden+=+true+//+or+not,+your+choice.

++++//+self.window
++++self.window+=+UIWindow(frame:+UIScreen.mainScreen().bounds)

++++self.window!.rootViewController+=+navigationController

++++self.window!.makeKeyAndVisible()
}|code-block|syntax|javascript|54351|要使此示例工作，您需要在主视图控制器上将"MainViewController“设置为故事板ID，并且在本例中，故事板的文件名为"MainStoryboard.storyboard”。我用这种方式重命名我的故事板，因为Main.storyboard对我来说不是一个恰当的名称，特别是如果你去子类它的话。|54352|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Here is a good way to approach it. This example places a navigation controller as the root view controller, and puts the view controller of your choice within it at the bottom of the navigation stack, ready for you to push whatever you need to from it.

<pre><code>func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool
{
 // mainStoryboard
 let mainStoryboard = UIStoryboard(name: "MainStoryboard", bundle: nil)

 // rootViewController
 let rootViewController = mainStoryboard.instantiateViewControllerWithIdentifier("MainViewController") as? UIViewController

 // navigationController
 let navigationController = UINavigationController(rootViewController: rootViewController!)

 navigationController.navigationBarHidden = true // or not, your choice.

 // self.window
 self.window = UIWindow(frame: UIScreen.mainScreen().bounds)

 self.window!.rootViewController = navigationController

 self.window!.makeKeyAndVisible()
}
</code></pre>

To make this example work you would set "MainViewController" as the Storyboard ID on your main view controller, and the storyboard's file name in this case would be "MainStoryboard.storyboard". I rename my storyboards this way because Main.storyboard to me is not a proper name, particularly if you ever go to subclass it.

blocks|key|4561020|text|我已经在Xcode8和swift+3.0中做过，希望它对你有用，并且它工作得很好。使用以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4561021|var+window:+UIWindow?

func+application(_+application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[UIApplicationLaunchOptionsKey:+Any]?)+->+Bool+{+++++++
++++self.window+=+UIWindow(frame:+UIScreen.main.bounds)
++++let+storyboard+=+UIStoryboard(name:+"Main",+bundle:+nil)
++++let+initialViewController+=+storyboard.instantiateViewController(withIdentifier:+"ViewController")
++++self.window?.rootViewController+=+initialViewController
++++self.window?.makeKeyAndVisible()
++++return+true
}|code-block|syntax|javascript|4561022|如果您使用的是导航控制器，请使用以下代码：|4561023|var+window:+UIWindow?

func+application(_+application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[UIApplicationLaunchOptionsKey:+Any]?)+->+Bool+{
++++self.window+=+UIWindow(frame:+UIScreen.main.bounds)
++++let+storyboard+=+UIStoryboard(name:+"Main",+bundle:+nil)
++++let+navigationController:UINavigationController+=+storyboard.instantiateInitialViewController()+as!+UINavigationController
++++let+initialViewController+=+storyboard.instantiateViewControllerWithIdentifier("ViewController")
++++navigationController.viewControllers+=+[initialViewController]
++++self.window?.rootViewController+=+navigationController
++++self.window?.makeKeyAndVisible()++++++
++++return+true
}|4561024|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I had done in Xcode 8 and swift 3.0 hope it will be useful for u, and its working perfectly. Use following code : 

<pre><code>var window: UIWindow?

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool { 
 self.window = UIWindow(frame: UIScreen.main.bounds)
 let storyboard = UIStoryboard(name: "Main", bundle: nil)
 let initialViewController = storyboard.instantiateViewController(withIdentifier: "ViewController")
 self.window?.rootViewController = initialViewController
 self.window?.makeKeyAndVisible()
 return true
}
</code></pre>

And If you are using the navigation controller, then use following code for that:

<pre><code>var window: UIWindow?

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool {
 self.window = UIWindow(frame: UIScreen.main.bounds)
 let storyboard = UIStoryboard(name: "Main", bundle: nil)
 let navigationController:UINavigationController = storyboard.instantiateInitialViewController() as! UINavigationController
 let initialViewController = storyboard.instantiateViewControllerWithIdentifier("ViewController")
 navigationController.viewControllers = [initialViewController]
 self.window?.rootViewController = navigationController
 self.window?.makeKeyAndVisible() 
 return true
}
</code></pre>

blocks|key|4561037|text|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
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4561038|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; 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
}
</code></pre>

blocks|key|4561058|text|以下是Swift+4中完整解决方案，在didFinishLaunchingWithOptions中实现|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4561059|+func+application(_+application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[UIApplicationLaunchOptionsKey:+Any]?)+->+Bool+{

+let+isLogin+=+UserDefaults.standard.bool(forKey:+"Islogin")
++++if+isLogin{
++++++++self.NextViewController(storybordid:+"OtherViewController")


++++}else{
++++++++self.NextViewController(storybordid:+"LoginViewController")

++++}
}|code-block|syntax|javascript|4561060|在Appdelegate.swift中的任意位置编写此函数|4561061|++func+NextViewController(storybordid:String)
{

++++let+storyBoard:UIStoryboard+=+UIStoryboard(name:+"Main",+bundle:+nil)
++++let+exampleVC+=+storyBoard.instantiateViewController(withIdentifier:storybordid+)
+++//+self.present(exampleVC,+animated:+true)
++++self.window+=+UIWindow(frame:+UIScreen.main.bounds)
++++self.window?.rootViewController+=+exampleVC
++++self.window?.makeKeyAndVisible()
}|4561062|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here is complete Solution in Swift 4
implement this in didFinishLaunchingWithOptions

<pre><code> func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool {

 let isLogin = UserDefaults.standard.bool(forKey: "Islogin")
 if isLogin{
 self.NextViewController(storybordid: "OtherViewController")


 }else{
 self.NextViewController(storybordid: "LoginViewController")

 }
}
</code></pre>

write this Function any where inside Appdelegate.swift

<pre><code> func NextViewController(storybordid:String)
{

 let storyBoard:UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
 let exampleVC = storyBoard.instantiateViewController(withIdentifier:storybordid )
 // self.present(exampleVC, animated: true)
 self.window = UIWindow(frame: UIScreen.main.bounds)
 self.window?.rootViewController = exampleVC
 self.window?.makeKeyAndVisible()
}
</code></pre>

blocks|key|4561092|text|对于新的Xcode11.xxx和Swift+5.xx，其目标设置为iOS+13%2B。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4561093|对于新的项目结构，AppDelegate不需要对rootViewController做任何事情。|4561094|这里有一个新的类来处理窗口(UIWindowScene)类->+'SceneDelegate‘文件。|4561095|class+SceneDelegate:+UIResponder,+UIWindowSceneDelegate+{
var+window:+UIWindow?

func+scene(_+scene:+UIScene,+willConnectTo+session:+UISceneSession,+options+connectionOptions:+UIScene.ConnectionOptions)+{

++++if+let+windowScene+=+scene+as?+UIWindowScene+{
++++++++let+window+=+UIWindow(windowScene:+windowScene)
++++++++window.rootViewController+=+//+Your+RootViewController+in+here
++++++++self.window+=+window
++++++++window.makeKeyAndVisible()
++++}

}|code-block|syntax|javascript|4561096|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

For new Xcode 11.xxx and Swift 5.xx, where the target it set to iOS 13+.

For the new project structure, AppDelegate does not have to do anything regarding rootViewController.

A new class is there to handle window(UIWindowScene) class -> 'SceneDelegate' file.

<pre><code>class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

 if let windowScene = scene as? UIWindowScene {
 let window = UIWindow(windowScene: windowScene)
 window.rootViewController = // Your RootViewController in here
 self.window = window
 window.makeKeyAndVisible()
 }

}
</code></pre>

blocks|key|4561109|text|对于Swift+5%2B|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4561110|var+window:+UIWindow?

++++func+scene(_+scene:+UIScene,+willConnectTo+session:+UISceneSession,+options+connectionOptions:+UIScene.ConnectionOptions)+{
++++++++if+let+windowScene+=+scene+as?+UIWindowScene+{
++++++++++++let+window+=+UIWindow(windowScene:+windowScene)
++++++++++++let+submodules+=+(
++++++++++++++++home:+HomeRouter.createModule(),
++++++++++++++++search:+SearchRouter.createModule(),
++++++++++++++++exoplanets:+ExoplanetsRouter.createModule()
++++++++++++)
++++++++++++
++++++++++++let+tabBarController+=+TabBarModuleBuilder.build(usingSubmodules:+submodules)
++++++++++++
++++++++++++window.rootViewController+=+tabBarController
++++++++++++self.window+=+window
++++++++++++window.makeKeyAndVisible()
++++++++}
++++}|code-block|syntax|javascript|4561111|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For Swift 5+
<pre class="lang-swift prettyprint-override"><code>
var window: UIWindow?

 func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
 if let windowScene = scene as? UIWindowScene {
 let window = UIWindow(windowScene: windowScene)
 let submodules = (
 home: HomeRouter.createModule(),
 search: SearchRouter.createModule(),
 exoplanets: ExoplanetsRouter.createModule()
 )
 
 let tabBarController = TabBarModuleBuilder.build(usingSubmodules: submodules)
 
 window.rootViewController = tabBarController
 self.window = window
 window.makeKeyAndVisible()
 }
 }

</code></pre>

blocks|key|4561138|text|如果我的应用程序用户已经存在于keychain或userdefault中，当我需要更改rootviewcontroller时，我发现这个答案很有帮助，并且非常适合我的情况。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4561139|https://stackoverflow.com/a/58413582/6596443|offset|length|4561140|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|18|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

I find this answer helpful and works perfectly for my case when i needed to change the rootviewcontroller if my app user already exist in the keychain or userdefault.
<a href="https://stackoverflow.com/a/58413582/6596443">https://stackoverflow.com/a/58413582/6596443</a>

I would like to set the initial viewcontroller from the appdelegate. I found a really good answer, however it's in Objective C and im having trouble achieving the same thing in swift.

<a href="https://stackoverflow.com/questions/10428629/programatically-set-the-initial-view-controller-using-storyboards">Programmatically set the initial view controller using Storyboards</a>

<pre><code>- (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:&lt;storyboard id&gt;];

 self.window.rootViewController = viewController;
 [self.window makeKeyAndVisible];

 return YES;
}
</code></pre>

Anyone able to help?

I want the initial Viewcontroller to be dependent on certain conditions being met using a conditional statement.

set initial viewcontroller in appdelegate - swift

Objective-C

Swift

Xcode

我想要从应用程序委托中设置初始的视图控制器。我找到了一个非常好的答案，然而它是在目标C中，而我在swift中实现同样的事情时遇到了困难。- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary...

问在appdelegate - swift中设置初始视图控制器
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问在appdelegate - swift中设置初始视图控制器
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