结合导航控制器和标签栏控制器

问题描述

正如我在标题中提到的，我想将 Navigation Controller 添加到我已经有 Tab Controller 的应用程序中.因此，尝试在 页.无论如何，有些不对劲.UINavigationController 正在寻找一个空白页面，即使有一个视图和一些库.

As I mentioned in the title, I want to add Navigation Controller to my application which already has a Tab Controller. So trying to do the staff something like on this page. Anyway, something is wrong. UINavigationController is looking a blank page, even if has a view and some libraries.

让我从头开始:

在我的 AppDelegate 中，我正在设置标签栏控制器，如下所示:

In my AppDelegate, I'm setting tab bar controllers like this:

@interface MYAppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) UITabBarController *tabBarController;

@end

这是.m文件:

@implementation MYAppDelegate

@synthesize window = _window;
@synthesize tabBarController = _tabBarController;

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

    UINavigationController *viewController1 = [[[MYMainViewController alloc] init] initWithNibName: @"MYMainViewController" bundle:nil];
    UIViewController *viewController2 = [[[MYPageViewController alloc] init] initWithNibName:@"MYPageViewController" bundle:nil];
    UIViewController *viewController3 = [[[MYSearchViewController alloc] init] initWithNibName:@"MYSearchViewController" bundle:nil];
    UIViewController *viewController4 = [[[MYPersonViewController alloc] init] initWithNibName:@"MYPersonViewController" bundle:nil];

    // Initialize tabBarController and add ViewControllers
    self.tabBarController = [[UITabBarController alloc] init];
    self.tabBarController.viewControllers = [NSArray arrayWithObjects: viewController1, viewController2, 
        viewController3, viewController4, nil];

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

    return YES;
}

然后，这里是 MYMainViewController 实现，它是一个 UINavigationController:

Then, here is MYMainViewController implementaion which is a UINavigationController:

- (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@"%@", [self navigationController]); // Logging null
}

我的 .xib 文件有一个 UINavigationController 并且其中有一个视图.尽管如此，当我使用该应用程序时，有空白页面和无标题导航栏.我做错了什么?

My .xib file has a UINavigationController and and there is a view in it. Althought it, when I worked the app, there is blank page and untitled navigation bar. What am I doing wrong?

如果我可以看到我的视图的内容，我想使用后退按钮在两个视图控制器之间导航.

If I could see the content of my view, I want to navigate between two view controllers by using back button.

任何帮助或方法对我来说都很棒.

Any help or approach would be great for me.

推荐答案

尝试从xib中移除导航控制器，使其只有视图控制器，然后以编程方式初始化导航控制器:

Try to remove navigation controller from xib, so it only have view controller, then initialize navigation controller programatically:

UIViewController *tmpViewController1 = [[[YourViewController alloc] init] initWithNibName:@"YourViewController" bundle:nil];
 UINavigationController *viewController1 =  [[UINavigationController alloc] initWithRootViewController:tmpViewController1];

这篇关于结合导航控制器和标签栏控制器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！