Question

这是我的代码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    CSDisplayPlaza *displayPlaza = [[CSDisplayPlaza alloc] initWithNibName:@"CSDisplayPlaza" bundle:nil];
    [displayPlaza setTabBarItem:[[UITabBarItem alloc] initWithTitle:@"one" image:[UIImage imageNamed:@"displayPlaza"] tag:0]];
    UINavigationController *displayPlazaNav = [[UINavigationController alloc] initWithRootViewController:displayPlaza];

    CSGameHall *gameHall = [[CSGameHall alloc] initWithNibName:@"CSGameHall" bundle:nil];
    [gameHall setTabBarItem:[[UITabBarItem alloc] initWithTitle:@"two" image:[UIImage imageNamed:@"displayPlaza"] tag:1]];
    UINavigationController *gameHallNav = [[UINavigationController alloc] initWithRootViewController:gameHall];

    CSMyInformation *myInformation = [[CSMyInformation alloc] initWithNibName:@"CSMyInformation" bundle:nil];
    [myInformation setTabBarItem:[[UITabBarItem alloc] initWithTitle:@"three" image:[UIImage imageNamed:@"myInformation"] tag:2]];
    UINavigationController *myInformationNav = [[UINavigationController alloc] initWithRootViewController:myInformation];

    self.tabBarController = [[UITabBarController alloc] init];
    [tabBarController setViewControllers:[NSArray arrayWithObjects:displayPlazaNav,gameHallNav,myInformationNav,nil]];
    [tabBarController setSelectedViewController:displayPlazaNav];
    self.window.rootViewController = self.tabBarController;

    [self.window makeKeyAndVisible];
    return YES;
}

在模拟器中，无法显示任何视图控制器。在我的模拟器中只是一个空的tabbar。我不知道会发生什么。

Answer 1

我的猜测是displayPlaza由于某种原因是零。创建每个对象后添加日志消息以验证您实际创建了一个对象，还有标签栏控制器数组。

标签栏控制器无法显示视图控制器

1 个答案: