如何在 UITabBarController 中插入 UINavigationController

Question

如何在 UITabBarController 中插入 UINavigationController。

目前，我在应用程序委托内有主 UITabBarController 和声明（因此选项卡是主要的），

self.window.rootViewController = self.tabBarController;

并且在其中一个选项卡内我想插入 UINavigationController，但无法获取它。

代码的构造如下：

1. MainWindow.xib ，其中包含 UITabBarController 对象，其中选项卡类型为 UINavigationController （指向 < code>NavigationHistory.xib) - 屏幕截图：无效链接
2. NavigationHistory.xib 仅包含 UINavigationController，其中指向 History.xib
3. History.xib 的视图仅具有 UITableView 元素 - 屏幕截图：无效链接

现在 UIViewController 不显示我的 View1 视图，我不知道为什么会这样。也许你有任何线索？或者指出完成此类配置的位置。

Answer 1

我自己来回答吧。很好解释在
https://developer.apple.com/库/ios/#documentation/WindowsViews/Conceptual/ViewControllerCatalog/Chapters/CombiningViewControllers.html

Answer 2

在appdelegate.m文件中编写代码......

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

    NSMutableArray *Mutablearray = [[NSMutableArray alloc] init];

        UIViewController *1st_View = [[FirstViewController alloc] initWithNibName:@"FirstViewController_iPhone" bundle:nil];

        UINavigationController *Navigation = [[UINavigationController alloc] initWithRootViewController:1st_View];

        [Mutablarray addObject:Navigation];

        UIViewController *2nd_View = [[SecondViewController alloc] initWithNibName:@"SecondViewController_iPhone" bundle:nil];

        UINavigationController *Navigation  = [[UINavigationController alloc] initWithRootViewController:2nd_View];
        [Mutablearray addObject:Navigation];

    self.tabBarController = [[UITabBarController alloc] init];
    self.tabBarController.viewControllers = Mutablearray;
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

Answer 3

将控制器对象添加到 UINavigationController，并将该 navigationcontroller 对象添加到 UITabBarController

Answer 4

UINavigationController 是 UIViewController 的子类， UITabBarController 需要 UIViewController 数组（因此 UINavigationController ）；这告诉我，我可以为 UITabBarController 提供一个 UINavigationControllers（或其子类）数组，以提供所需的交互。

参考： https://developer.apple.com/library/ios/文档/UIKit/Reference/UINavigationController_Class/

https:// developer.apple.com/library/ios/documentation/UIKit/Reference/UITabBarController_Class/

Answer 5

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

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UITabBarController *tab = [[UITabBarController alloc] init];


SimpleTableViewController *tableView = [[SimpleTableViewController alloc] init];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:tableView];
UITabBarItem *item = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemHistory tag:0];
nav1.tabBarItem = item;


AboutViewController *about = [[AboutViewController alloc] init];
UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:about];
UITabBarItem *item2 = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFeatured tag:0];
nav2.tabBarItem = item2;

tab.viewControllers = @[nav1,nav2];

self.window.rootViewController = tab;
[self.window makeKeyAndVisible];
return YES;

}