导航到嵌入了 UINavigationController 的 UITableViewController

Question

我正在尝试以编程方式呈现一个 UITableViewController 和一个嵌入其中的 UINavigationController。但是，它在没有导航控制器的情况下显示。我该如何解决这个问题？

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

MyTableViewController *myt = [self.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:@"mytableviewControllerID"];
         UINavigationController *nav = ((UINavigationController*)myt);

        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

        self.window.rootViewController = nav;
        [self.window makeKeyAndVisible];

return YES;

}

Answer 1

你的错误是

 UINavigationController *nav = ((UINavigationController*)myt);

这不会将您的控制器嵌入到导航控制器中。您只是将控制器转换为导航控制器。

试试这个：

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

MyTableViewController *myt = [self.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:@"mytableviewControllerID"];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:myt];

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];

return YES;

}