如何正確添加導航控制器到隱藏導航欄的搜索視圖

Question

當我的應用程序啓動時，用戶看到我的應用程序啓動時的第一個屏幕（視圖）是沒有任何導航的搜索表單。在搜索過程完成並且結果準備好顯示後，導航將顯示出來。我卡在哪裏是使其與導航控制器一起工作的正確方法。

因此，假設應用程序名稱是RealEsateProperties

在RealEsatePropertiesAppDelegate.h：

#import <UIKit/UIKit.h> 

@class RealEsatePropertiesViewController; 

@interface RealEsatePropertiesAppDelegate : NSObject <UIApplicationDelegate> 
{ 
     UINavigationController *ListingNav; 
} 

@property (nonatomic, retain) IBOutlet UIWindow window; 

@property (nonatomic, retain) RealEsatePropertiesViewController *viewController; 

// Then I added this line for the navigation 
@property (nonatomic, retain) UINavigationController *ListingNav; 


@end 

和RealEsatePropertiesAppDelegate.m：

#import "RealEsatePropertiesAppDelegate.h" 
#import "RealEsatePropertiesViewController.h" 

@synthesize window=_window; 

@synthesize window=_viewController; 

@synthesize ListingNav; 

@implementation RealEsatePropertiesAppDelegate 

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

self.window.rootViewController = self.viewController; 

// Iadded the following 4 lines to try making the navigation thing work without showing any navigation bar on the first screen (that is the search form) 
self.ListingNav = [[UINavigationController alloc] initWithRootController:self.viewController]; 
self.ListingNav.navigationBarHidden = YES; 
[self.window addSubView:ListingNav.view]; 

[self.window makeKeyAndVisible]; 
return YES; 
} 

@end 

難道我做錯了什麼？

THX幫助，

斯特凡

Answer 1

您需要創建/頁頭的RealEsatePropertiesViewController？

viewController = [[RealEsatePropertiesViewController alloc] init];