Question

我想在基于视图的应用程序中添加导航控制器。我们如何以编程方式和使用xib文件来实现这一点..

Answer 1

如果您需要在uiviewcontroller中加入导航控制器，则需要按照以下步骤进行初始化

UIViewController *yourViewController = ...

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:yourViewController];

[self presentModalViewController:navController animated:YES];

//you need to release the controller
[navController release];

如果你在UIApplicationDelegate方法

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

你不能做一个presentModalViewController：navController动画...然后你需要将navController.view添加到窗口

    UIViewController *yourViewController = ...

    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:yourViewController];
    [self.window addSubview:navController.view];
    //don't do a release of navController because is not retained by addSubview

Answer 2

UINavigationController *navcontroller = [[UINavigationController alloc] initWithRootViewController:viewController];//here viewController is to which you want to make the navigation

[self.view addSubView:navController.view];

Answer 3

您只需从Interface Builder右下角的对象中拖出“导航栏”即可。这基本上是Sachin在他的回答中所说的，但你仍然必须以编程方式创建导航控制器的功能。即将新视图推送到堆栈并将其弹出。

在我看来，最容易在代码中做到这一点。

Answer 4

如果您想将导航控制器作为主窗口的根视图。然后，您可以使用以下代码执行此操作。

@interface yourAppDelegate_iPad : NSObject <UIApplicationDelegate> {
    UINavigationController *navigationController;
}

@property (nonatomic, retain) UINavigationController *navigationController;

@end

@implementation yourAppDelegate
@synthesize navigationController;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {


    navigationController = [[UINavigationController alloc] initWithRootViewController:yourRootViewController];
    [self.window addSubview:navigationController.view];
    [self.window makeKeyAndVisible];
    return YES;
}

您可以使用xib执行此操作，如下所示

打开MainWindow.xib

将UINavigationController拖放到其中。

创建并连接插座。

打开导航控制器的属性并设置根目录   图。

如何在基于视图的应用程序中添加导航控制器

4 个答案: