CODEWITHSUNDEEP
iosswiftuinavigationcontroller
MLyck
MLyck

Reputation: 5765

Creating a navigationController programmatically (Swift)

I've been trying to redo the work on my app programmatically. (Without the use of storyboards)

I'm almost done, except making the navigation controller manually.

Currently, I only have 1 viewcontroller. And of course the appDelegate

The navigation Controller, will be used throughout all pages in the application.

If anyone could help me out, or send a link to some proper documentation for doing this programmatically it would be greatly appreciated.

EDIT:

I forgot to mention it's in Swift.

Upvotes: 74

Views: 136787

Answers (7)

Jogendra.Com
Jogendra.Com

Reputation: 6454

In AppDelegate.swift

Swift 1, 2:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
   self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
   var nav1 = UINavigationController()
   var mainView = ViewController(nibName: nil, bundle: nil) //ViewController = Name of your controller
   nav1.viewControllers = [mainView]
   self.window!.rootViewController = nav1
   self.window?.makeKeyAndVisible()
}

Swift 4+: and Swift 5+

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
   self.window = UIWindow(frame: UIScreen.main.bounds)
   let nav1 = UINavigationController()
   let mainView = ViewController(nibName: nil, bundle: nil) //ViewController = Name of your controller
   nav1.viewControllers = [mainView]
   self.window!.rootViewController = nav1
   self.window?.makeKeyAndVisible()
}

Upvotes: 115

Alphonso Sensley II
Alphonso Sensley II

Reputation: 1

It is probably overkill, but I find myself doing this often enough that I just extended UIViewController and created an embedInNavigationController method. So now I can just call viewController.embedInNavigationController.

extension UIViewController {

func embedInNavigationController() -> UINavigationController {
    return UINavigationController(rootViewController: self)
   }
}

Upvotes: 0

Linus Karlsson
Linus Karlsson

Reputation: 546

Here is another take in the SceneDelegate class:

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 navController = UINavigationController()
        let viewController = ViewController()

        navController.viewControllers = [viewController]            
        window.rootViewController = navController
        self.window = window
        window.makeKeyAndVisible()
    }
}

Upvotes: 10

candyline
candyline

Reputation: 886

Value of type 'AppDelegate' has no member 'window'

For those building newer projects with SceneDelegate.swift, you can use the 'var window: UIWindow?' in SceneDelegate instead of the removed 'var window' in AppDelegate

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    guard let windowScene = (scene as? UIWindowScene) else { return }

    window?.windowScene = windowScene
    window?.makeKeyAndVisible()

    let viewController = ViewController()
    let navViewController = UINavigationController(rootViewController: viewController)
    window?.rootViewController = navViewController
}

Upvotes: 22

Nikunj Patel
Nikunj Patel

Reputation: 302

 self.window = UIWindow(frame: UIScreen.main.bounds) 
 let storyboard = UIStoryboard(name: "Main", bundle: nil) 
 let storyboard_Secondary = UIStoryboard(name: "Secondary", bundle: nil) 
 var initialViewController = UIViewController() 

 let aUser = CommonMethods.loadCustomObject("\(Constants.kUserProfile)") as? User  
 if aUser?.respCode == 1 { 
    initialViewController = storyboard_Secondary.instantiateViewController(withIdentifier: "MainTabVC")
    UIApplication.shared.statusBarStyle = .lightContent
    let navigationController = UINavigationController(rootViewController: initialViewController)
    navigationController.isNavigationBarHidden = true
    self.window!.rootViewController = navigationController
    self.window!.makeKeyAndVisible() 
}

Upvotes: -3

telenaut
telenaut

Reputation: 390

I would recommend starting your AppDelegate with this skeleton:

1) use let wherever you can!

2) UINavigationController has the rootViewController property.

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    let viewController = ViewController(nibName: nil, bundle: nil) //ViewController = Name of your controller
    let navigationController = UINavigationController(rootViewController: viewController)

    self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
    self.window?.rootViewController = navigationController
    self.window?.makeKeyAndVisible()

    return true
}

Upvotes: 17

Hardik Shekhat
Hardik Shekhat

Reputation: 1878

Try this one . It will guide you how to use navigation controller.

Programatically creating UINavigationController in iOS

AppDelegate.h

    #import <UIKit/UIKit.h>
    #import "LoginViewController.h"

    @interface AppDelegate : UIResponder <UIApplicationDelegate>

    @property (strong, nonatomic) UIWindow *window;
    @property (strong,nonatomic) UINavigationController *navigationController;
    @property (strong,nonatomic) LoginViewController *loginVC;

    @end

AppDelegate.m

    #import "AppDelegate.h"
    #import "LoginViewController.h"

    @implementation AppDelegate

  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.

   self.loginVC = [[LoginViewController alloc]initWithNibName:nil bundle:nil];
   self.loginVC.title = @"Login Page";

   self.navigationController = [[UINavigationController alloc]initWithRootViewController:self.loginVC];

   self.window.rootViewController = self.navigationController;
   [self.window makeKeyAndVisible];
  }

Then when you want to push the other view controller , simple use following code to move to another view controller.

- (IBAction)pushMyProfileView:(id)sender
{
    self.myProfileVC = [[MyProfileViewController alloc]initWithNibName:nil bundle:nil];
    [appDelegate.navigationController pushViewController:self.myProfileVC animated:YES];
}

Upvotes: 3

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