如何在更改初始视图后加载状态栏

显示我的ArticlesViewController时出现问题。这段代码很好用，但是当Articles页面出现时，没有状态栏。我觉得有什么毛病导航控制器，所以我试图添加如何在更改初始视图后加载状态栏

[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;

无论是在AppDelegate中的didFinishLaunchingWithOptions和ArticlesViewController的viewDidLoad中和viewWillAppear中，但仍然没有结果

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 
    NSManagedObjectContext *context = [self managedObjectContext]; 
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"Entity"]; 
    localStorage = [[context executeFetchRequest:fetchRequest error:nil] mutableCopy]; 
    NSObject *obj = [localStorage valueForKey:@"isAppLaunchedOnce"]; 
    NSString *condition = [[[obj description] componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] componentsJoinedByString:@""]; 
    NSCharacterSet *unwantedChars = [NSCharacterSet characterSetWithCharactersInString:@"\"()"]; 
    condition = [[condition componentsSeparatedByCharactersInSet:unwantedChars] componentsJoinedByString:@""]; 

    if ([condition isEqual: @"YES"]){ 
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; 
    UIViewController *rootViewController = (ArticlesViewController*)[storyboard instantiateViewControllerWithIdentifier:@"ArticlesViewController"]; 
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:rootViewController]; 
    self.window.rootViewController = rootViewController; 
    if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_6_1){ 
    navController.navigationBar.tintColor = [UIColor whiteColor]; 
    navController.navigationItem.titleView.tintColor = [UIColor whiteColor]; 
    NSDictionary *titleAttributes = @{ 
    NSFontAttributeName:[UIFont fontWithName:@"Helvetica-Bold" size:14.0], 
    NSForegroundColorAttributeName:[UIColor whiteColor] 
    }; 
    navController.navigationBar.titleTextAttributes = titleAttributes; 
    } 
    [self.window makeKeyAndVisible]; 
    } 
    // Override point for customization after application launch. 
    return YES; 
    }

来源

2016-02-29 dimazava

如果您有主要故事板，为什么要在代码中创建导航控制器和文章视图控制器？ – matt

@matt据我了解，我不创建ArticlesViewController，我从故事板获得这个控制器，然后改变我的initialViewController在应用程序。如果你认为我可以使用我现有的导航控制器 - 问我如何，它可能是一个答案 – dimazava

在ArticlesViewController中加入下面的方法试试看。

- (BOOL)prefersStatusBarHidden 
{ 
    return NO; 
}

如果你没有在plist中设置，那么你需要为每个控制器设置。

您也可以仅仅通过增加以下线didFinishLaunchingWithOptions:

[[UIApplication sharedApplication] setStatusBarHidden:NO];

检查这些关键的plist文件和设置状态栏最初还隐藏着如NO

设置

来源

2016-02-29 12:38:21 Rahul

仍然不显示=（ – dimazava

我将此行添加到我的appDelegate并将状态栏设置为默认，但它不显示栏 – dimazava

如何在更改初始视图后加载状态栏

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