Question

我一直在尝试以编程方式重做我的应用上的工作。（不使用故事板）

我差不多完成了，除了手动制作导航控制器。

我一直在做一些研究，但我找不到任何手动实施的文档。（我开始将应用程序作为单一视图应用程序）

目前，我只有1个viewcontroller。当然还有appDelegate

导航控制器将在应用程序的所有页面中使用。

如果有人可以帮助我，或者以编程方式发送一些正确文档的链接，我们将不胜感激。

编辑：

我忘了在Swift中提到它。

Answer 1

Swift 1,2：

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 3+：和Swift 4 +

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()

Answer 2

我建议用这个骨架开始你的AppDelegate：

1）尽可能使用让！

2）UINavigationController具有 rootViewController 属性。

Option Compare Database
Option Explicit

Private Sub cmdShow_Click()
txtOutput.Value = "hello world"
End Sub




Private Sub Form_Load()
txtOutput.Caption = Text
If txtOutput.DefaultValue = Text Then
Me.TimerInterval = 5000
If txtOutput = 0 Then
txtOutput = False


End Sub


Private Sub cmdCheck_click()
Dim guess As Integer
guess = InStr(txtOutput.Value, txtInput.Value)
If guess = 0 Then
    txtResult.Value = "You're terrible at this game"
Else
    txtResult.Value = "Good find!"
End If

End Sub

Answer 3

试试这个。它将指导您如何使用导航控制器。

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];
  }

然后，当您想要推送另一个视图控制器时，只需使用以下代码移动到另一个视图控制器。

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

Answer 4

这是SceneDelegate类的另一种体现：

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()
        }
}

Answer 5

“ AppDelegate”类型的值没有成员“窗口”

对于那些使用SceneDelegate.swift构建较新项目的人，可以使用“ var window：UIWindow？”在SceneDelegate中，而不是在AppDelegate中删除的“可变窗口”

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
}

Answer 6

 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() 
}

以编程方式创建navigationController（Swift）

6 个答案:

“ AppDelegate”类型的值没有成员“窗口”