장치의 빈 화면; 시뮬레이터가 잘 작동합니다.

Question

내비게이션 컨트롤러가있는 iOS 앱을 쓰고 있습니다. 시뮬레이터에서 열면 잘 돌아갑니다. 장치에서 실행하면 빈 화면이 상태 표시 줄 아래에 표시됩니다. 게다가 내 RootViewController가 기본 뷰 (내 문제의 근원이라고 생각되는)로 만들어 졌는지 알 수 없습니다.

@class RootViewController; 

@interface MyAppDelegate : NSObject <UIApplicationDelegate> { 
    UIWindow *window; 
    RootViewController *viewController; 

    UINavigationController *navigationController; 
} 

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

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

    // Override point for customization after application launch. 

    // Set the navigation controller as the window's root view controller and display. 
    self.window.rootViewController = self.navigationController; 
    [self.window makeKeyAndVisible]; 

    // ... 

    return YES; 
} 

RootViewController.m

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    self.title = @"Main Menu"; 
} 

등 없음 viewWillAppear, viewDidAppear,

0 표시 소자 테이블.

- (UITableViewCell *)tableView:(UITableView *)tv 
     cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    tv.backgroundColor = [UIColor whiteColor]; 

    UITableViewCell *cell; 
    if (indexPath.row == 0) 
     cell = newsCell; 
    else if (indexPath.row == 1) 
     cell = configureCell; 
    else if (indexPath.row == 2) 
     cell = aboutCell; 

    return cell; 
} 

- (NSInteger)tableView:(UITableView *)tv numberOfRowsInSection:(NSInteger)section 
{ 
    return 0; 
} 

#pragma mark UITableViewDelegate Methods 


- (CGFloat)tableView:(UITableView *)tv 
heightForRowAtIndexPath:(NSIndexPath *)indexPath { 
    return 84; 
} 

- (void) tableView:(UITableView *)tv 
didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (0 == indexPath.row) 
    { 
    } 
    else if (1 == indexPath.row) 
    { 
    } 
    else if (2 == indexPath.row) 
    { 
    } 
} 


#pragma mark - 
#pragma mark Memory management 

- (void)didReceiveMemoryWarning { 
    // Releases the view if it doesn't have a superview. 
    [super didReceiveMemoryWarning]; 

    // Relinquish ownership any cached data, images, etc that aren't in use. 
} 

- (void)viewDidUnload { 
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand. 
    // For example: self.myOutlet = nil; 
} 


- (void)dealloc { 
    [super dealloc]; 
    [tableView release]; 
    [newsCell release]; 
    [configureCell release]; 
    [aboutCell release]; 
} 

RootViewController.h

@interface RootViewController : UIViewController 
<UITableViewDataSource, UITableViewDelegate> 
{ 
    UITableView *tableView; 
    IBOutlet UIView *displaySplashScreen; 
    IBOutlet UITableViewCell *newsCell, *configureCell, *aboutCell; 
} 

@property (nonatomic, retain) IBOutlet UITableView *tableView; 

Answer 1

여기에 몇 가지 문제가 있습니다. 먼저, AppDelegate에 헤더 읽어야합니다

@class RootViewController; 

@interface MyAppDelegate : NSObject <UIApplicationDelegate> { 
    UIWindow *window; 
    RootViewController *rootViewController; 
} 
@property (nonatomic, retain) IBOutlet UIWindow *window; 

@end 

그런 다음, 구현,이 같은 창에 네비게이션 컨트롤러에 루트를 추가하고 navController :

#import "RootViewController.h" 

@implementation MyAppDelegate 

@synthesize window; 

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

    rootViewController = [[RootViewController alloc] init]; 
    UINavigationController *navController = [[UINavigationController alloc] 
              initWithRootViewController:rootViewController]; 

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

    return YES; 
} 

Answer 2

PengOne의 대답은 제외하고, 정확 나는 하나의 작은 변화를 만들 것이다. 수행 :

#import "RootViewController.h" 

@implementation MyAppDelegate 

@synthesize window; 

- (BOOL)application:(UIApplication *)application 
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 
    rootViewcontroller = [[RootViewController alloc] init]; 
    UINavigationController *navController = [[UINavigationController alloc] 
             initWithRootViewController:rootViewController]; 

    self.window.rootViewController = navController; 

    [self.window makeKeyAndVisible]; 
    return YES; 
} 

nav 컨트롤러를 표시하는 것이 더 좋습니다. PengOne도 말했듯이, Interface Builder 파일에 문제가 있습니다. 모든 것을 풀고 문제가 지속되는지 다시 확인하십시오. 그렇다면 모든 이름이 올바르게 지정되었는지 확인하십시오. 행운을 빕니다!