UINavigationBar風格不變

Question

我想讓它變成半透明的黑色，爲什麼這不起作用？

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 
    // Override point for customization after application launch. 
    UINavigationController *viewController1 = [[UINavigationController alloc] init]; 
    viewController1.navigationBar.barStyle = UIBarStyleBlackTranslucent; 
    RSSViewController *rssViewController = [[RSSViewController alloc] init]; 
    [viewController1 addChildViewController:rssViewController]; 
    UIViewController *viewController2 = [[CalendarViewController alloc] initWithNibName:@"CalendarViewController" bundle:nil]; 
    self.tabBarController = [[UITabBarController alloc] init]; 
    self.tabBarController.viewControllers = @[viewController1, viewController2]; 
    self.window.rootViewController = self.tabBarController; 
    [self.window makeKeyAndVisible]; 

    [self customizeInterface]; 

    return YES; 
} 

當我把viewController1.navigationBar.barStyle = UIBarStyleBlackTranslucent;導航項目簡單地消失......

Answer 1

使用此

viewController1.navigationBar.tintColor = [UIColor blackColor]; 
    viewController1.navigationBar.translucent = YES;