代码中带有UINavigationController的UITabBar [英] UITabBar with UINavigationController in code

问题描述

我目前有一个带有5个调用UIViews屏幕的UITabBar.该部分工作正常，但我想在其中几个中放入一个UINavigationController.我找到了一些可以正常工作的教程，但所有教程都在IB中实现了，如果可能的话，我想避免这种情况.

I've currently got a UITabBar with 5 screens calling UIViews. That part works fine but I want to put in a UINavigationController in a couple of them. I have found a few tutorials that work fine but all of them implement it in IB and I want to avoid that if possible.

我不知道在哪里实现UINavigationController，我应该在应用委托中使用UITabBar来实现它，并从UIView调用导航控制器，还是应该在UIView类中创建它?

I'm lost as to where to implement the UINavigationController, should I do it in the App Delegate with the UITabBar and call the navigation controller from the UIView or should I create it in the UIView class?

我尝试了8种不同的方法，但最终都会导致导航栏不起作用，根本没有导航栏或应用崩溃.

I've tried about 8 different ways and always ends up with either the Navbar not working, no nav bar at all or the app crashing.

当前，我像这样创建标签栏:

Currently I create the tab bar like this:

tabBarController = [[UITabBarController alloc] init];
ScreenA *screenA = [[ScreenA alloc] initWithNibName:@"ScreenA" bundle:nil];
//more here
tabBarController.viewControllers = [NSArray arrayWithObjects:screenA, ...., nil];
[window addSubview:tabBarController.view];

在initWithNibName中，我有这个:

And in the initWithNibName I have this:

self.title = @"Screen A";
self.tabBarItem.image = [UIImage imageNamed:@"someImage.png"];

推荐答案

好，这样做吧...

Ok, do it like this...

    tabBarController = [[UITabBarController alloc] init];    

searchTableViewController = [[SearchTableViewController alloc] init];
    UINavigationController *searchTableNavController = [[[UINavigationController alloc] initWithRootViewController:searchTableViewController] autorelease];
[searchTableViewController release];                                                              

searchMapViewController = [[SearchMapViewController alloc] init];   
UINavigationController *mapTableNavController = [[[UINavigationController alloc] initWithRootViewController:searchMapViewController] autorelease];
[searchMapViewController release];                                                    


tabBarController.viewControllers = [NSArray arrayWithObjects:searchTableNavController, mapTableNavController, nil]; 

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