iPhone 导航控制器不显示

Question

我的导航视图有一个非常奇怪的行为。我想要的是，从我的主视图中，用户可以触摸一个按钮，这会将他引导到具有应用程序设置的视图。

下面是负责导航的代码：

AppDelegate.h

    @interface AppDelegate : NSObject  {
    UIWindow *window;
    ViewController *viewController; // My Main View Controller
    UINavigationController *navigationController; } 

    @property (nonatomic, retain) IBOutlet UIWindow *window;
    @property (nonatomic, retain) IBOutlet ViewController *viewController;
    @property (nonatomic, retain) IBOutlet UINavigationController *navigationController;

AppDelegate.m

@synthesize viewController;
@synthesize window;
@synthesize navigationController;

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

    [window addSubview:viewController.view];
    [window addSubview:navigationController.view];
    [window makeKeyAndVisible];
    return YES;
}

viewController.h

#import 
#import "optionsViewController.h" // the 'settings' view controller

@class AppDelegate;

@interface ViewController : UIViewController {
    AppDelegate *appDelegate;

viewController.m

- (IBAction)showOptionsViewController:(UIBarButtonItem *)sender {
//  optionsController.theSubjectID = self.theSubjectID;
//  [self presentModalViewController:self.optionsController animated:YES];


    optionsViewController *optionsController= [[optionsViewController alloc] initWithNibName:@"optionsViewController" bundle:nil];
    optionsController.theSubjectID = self.theSubjectID;
    [self.navigationController pushViewController:optionsController animated:YES];
    [optionsController release];

}

我的 optionsController 是一个“普通”UIViewController。正如您所看到的，我是否将 optionsController 的负载从模式更改为导航。难道我在这里错过了什么吗？

感谢您提前提供任何提示。

干杯，雷内

Answer 1

如果在将其添加为子视图之前需要分配/初始化它，您是否在 Interface Builder 中连接了它？