UINavigationController不起作用 [英] UINavigationController not working

问题描述

我在我的应用程序中使用了UITabBar，但是(由于我自己的原因)我必须将其删除.现在，我的UINavigationControllers都不起作用.最明显的地方是当我打电话:[self.navigationController pushViewController:myViewController animated:YES];

I was using a UITabBar for my application but (for my own reasons) I had to remove it. Now none of my UINavigationControllers work. Where that manifests itself most is when I call: [self.navigationController pushViewController:myViewController animated:YES];

该代码现在什么都不做，因为我没有UINavigationController，而且我不知道如何制作一个可以工作的代码.

That code now does nothing because I have no UINavigationController and I don't know how to make one that will work.

推荐答案

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{             
    //Initialize window components
    UINavigationController *myNavController     = [[UINavigationController alloc] init];
    [self setNavController: myNavController];
    [myNavController release];

    FirstViewController *cViewController    = [[FirstViewController alloc] init];
    [self setMyFirstView: cViewController];
    [cViewController release];

    [self.window addSubview: [self navController].view];

    [[self navController] pushViewController: myFirstView animated:YES];

    [self.window makeKeyAndVisible];
    return YES;
}

这应该可以解决问题.

顺便说一句，您应该在delegate.h中声明以下内容:

By the way, you should declare the following for that in the delegate.h:

@property (nonatomic, retain) UINavigationController *navController;
@property (nonatomic, retain) IBOutlet CatchengoViewController *viewController;
@property (nonatomic, retain) UIViewController *myFirstView;

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