在 iOS 中以编程方式创建 UINavigationController
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Programmatically creating UINavigationController in iOS
提问by user3418619
I am new to iOS. And I want to use navigation controller in my application but I have no any idea how to do it. So can any one guide me step by step for creating navigation in my application.
我是 iOS 新手。我想在我的应用程序中使用导航控制器，但我不知道该怎么做。因此，任何人都可以指导我一步一步地在我的应用程序中创建导航。
采纳答案by user3418619
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
ImageViewController2 *dealVC = (ImageViewController2 *)[storyboard instantiateViewControllerWithIdentifier:@"ImageViewController2"];
[self.navigationController pushViewController:dealVC animated:YES];
where ImageViewController2 is a class name
其中 ImageViewController2 是一个类名
回答by Bhanu
In appDelegate.h
在appDelegate.h
@property (strong, nonatomic) UINavigationController *navController;
and set the delegate UINavigationControllerDelegateand synthesise object in appDelegate.mnow,
现在设置委托UINavigationControllerDelegate和合成对象appDelegate.m，
appDelegate.m
appDelegate.m
you can set navigation controller in didFinishLaunchingWithOptionsmethod
您可以在didFinishLaunchingWithOptions方法中设置导航控制器
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
frstVwCntlr = [[firstViewController alloc] initWithNibName:@"firstViewController" bundle:nil];
self.navController = [[UINavigationController alloc] initWithRootViewController:self.frstVwCntlr];
self.window.rootViewController = self.navController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
In the above code , your firstViewController is set to UINavigationControllerand UINavigationControlleradded to UIWindowlike
在上面的代码中，您的 firstViewController 设置为UINavigationController并UINavigationController添加为UIWindowlike
self.window.rootViewController = self.navController
self.window.rootViewController = self.navController
Hope this may help you
希望这可以帮助你
回答by sleepwalkerfx
If you want to create everything programmatically you have to do it in AppDelegate.
如果您想以编程方式创建所有内容，则必须在 AppDelegate 中进行。
But if you don't want to do it programmatically, then just select the ViewController in Storyboard then select menu options:
但是，如果您不想以编程方式执行此操作，则只需在 Storyboard 中选择 ViewController，然后选择菜单选项：
Editor > Embed In > Navigation Controller
Editor > Embed In > Navigation Controller
回答by iDeveloper
You can creat UINavigationController in Appdelegate and set your first viewcontroller on it.
您可以在 Appdelegate 中创建 UINavigationController 并在其上设置您的第一个视图控制器。
回答by Satheeshwaran
So for creating a UINavigationController programatically without using storyboards, go to your app delegate and do the following. Create two properties, window and viewController
因此，要在不使用故事板的情况下以编程方式创建 UINavigationController，请转到您的应用程序委托并执行以下操作。创建两个属性，window 和 viewController
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor=[UIColor clearColor];
self.viewController = [[YourFirstViewController alloc] initWithNibName:@"YourFirstViewController" bundle:nil];
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:self.viewController];
self.window.rootViewController = navController;
[self.window makeKeyAndVisible];
// Override point for customization after application launch.
return YES;
}
回答by jigar Thakkar
Here is the code that you should write in app delegate.
这是您应该在应用程序委托中编写的代码。
UIViewController *vc=[[UIViewController alloc]initWithNibName:@"vc1" bundle:nil];
UIView *view=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];
view.backgroundColor=[UIColor redColor];
[vc setView:view];
self.navme=[[UINavigationController alloc]initWithRootViewController:vc];
self.window.rootViewController = self.navme;
回答by Ved Rauniyar
For Swift 3.0, using filter:
对于 Swift 3.0，使用过滤器：
let desiredController = self.navigationController!.viewControllers.filter { ##代码## is YourController }.first!
self.navigationController!.popToViewController(desiredController, animated: true)
