UINavigationController 显示隐藏

// // iphone_navtaAppDelegate.h // iphone.navta // // Created by wangjun on 10-12-13. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> @class iphone_navtaViewController; @interface iphone_navtaAppDelegate : NSObject <UIApplicationDelegate> { UIWindow *window; iphone_navtaViewController *viewController; IBOutlet UINavigationController *rootNavigationController; } @property (nonatomic,retain) UINavigationController *rootNavigationController; @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet iphone_navtaViewController *viewController; @end