Question

问题类似于this one，但它是在Xcode 5不存在时创建的。而这个问题仍未得到解答。关于如何删除故事板也有类似的问题，但它们是关于导航控制器，而不是标签栏控制器。

我的行动命令：

创建标签式应用
删除所有故事板文件
从.plist
创建UITabBarController子类并编辑xib
更改应用代理：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    BKTabController *navVC = [[BKTabController alloc] initWithNibName:@"BKTabController" bundle:nil];
    self.window.rootViewController = navVC;
    [self.window makeKeyAndVisible];

    return YES;
}

结果是黑屏，灰色而不是标签栏。

错误在哪里？

Answer 1

您看到黑屏，因为您的标签栏为空，因此您必须将ViewController添加到TabController。

像这样修改AppDelegate：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    BKTabController *navVC = [[BKTabController alloc] initWithNibName:@"BKTabController" bundle:nil];
    self.window.rootViewController = navVC;

    FirstViewController* firstView = [[FirstViewController alloc]initWithNibName:nil bundle:nil];
    firstView.title = @"FIRST"; //THIS WILL BE THE TITLE OF YOUR FIRST TAB

    SecondViewController* secondView = [[SecondViewController alloc]initWithNibName:nil bundle:nil];
    secondView.title = @"SECOND";//THIS WILL BE THE TITLE OF YOUR SECOND TAB

    //ADD VIEW CONTROLLER TO YOUR TAB CONTROLLER
    self.tabBarController.viewControllers = @[firstView,secondView];

    [self.window makeKeyAndVisible];
    return YES;
}

要点：

向您添加两个以上的新ViewControllers Xcode项目（例如 FirstViewController，SecondViewController）。
通过将此ViewControllers添加到Tab栏控制器来修改您的app delegate。

Xcode 5.没有故事板的选项卡式应用程序？

1 个答案: