pushViewController为导航栏设置动画，但不会显示新视图 [英] pushViewController animates the navigation bar but the new view doesn't show up

问题描述

我有一个iOS应用程序正在做一些疯狂的事情...我会尽力描述它.

I've got an iOS app that is doing some crazy stuff... I'll do my best to describe it.

我的导航架构如下:

AppDelegate调用此:

AppDelegate calls this:

tabNavController = [[MainTabViewController alloc] initWithNibName:nil bundle:nil];
self.window.rootViewController = tabNavController;
[self.window makeKeyAndVisible];

MainTabViewController继承自 UITabBarController

MainTabViewController inherits from UITabBarController

在MainTabViewController的viewDidLoad中，我以编程方式将标签加载到NSMutableArray中，并将其分配给tabControllers:

Inside MainTabViewController's viewDidLoad, I programmatically load my tabs into an NSMutableArray and assign it to the tabControllers:

NSMutableArray *tabs;

StreamViewController *controller = [StreamViewController alloc] initWithNib...];
UINavigationController *navCon = [UINavigationController alloc] initWithRootViewController:controller];

[tabs addObject:navContorller];

...
self.viewControllers = tabs;

我的第一个标签-默认显示的标签-继承自UIViewController.我在XIB中有一个UITableView设置作为主视图.我的课程是UITableViewDelegate和UITableViewDataSource.

My very first tab -- the one that is displayed by default -- inherits from UIViewController. I have a UITableView setup in a XIB as the main view. My class is the UITableViewDelegate and UITableViewDataSource.

StreamViewController : BaseModuleViewController <UITableViewDelegate, UITableViewDataSource>

该表加载并显示正常.当用户单击一行时，我将一个新的视图控制器推入堆栈:

The table loads and displays fine. When a user clicks a row, I push a new view controller to the stack:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {    
   ...
   DetailViewController* detailController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:[NSBundle mainBundle]];
   [self.navigationController pushViewController:detailController animated:YES];
   ...
}

这是很奇怪的地方.视图控制器的行为就像它要显示的那样，但事实并非如此.我看到我的navigationBar动画了-我的按钮移动了，标题改变了，并且显示了后退"按钮-但是视图本身没有显示.我什至可以继续单击表格视图单元格并不断加载越来越多的视图，每个新视图都会为导航栏设置动画，并显示一个新的后退按钮.然后，我可以回击X次以返回"我的StreamViewController.

This is where it gets strange. The view controller acts like its going to display, but it doesn't. I see my navigationBar animate -- my buttons shift around, the title changes, and a Back button shows up -- but the view itself does not display. I can even continue to click the table view cells and continually load more and more views, each new one animates the navbar and shows a new back button. I can then hit back X number of times to get "back" to my StreamViewController.

这是下一个击球手.如果我导航至选项卡#2，然后返回至选项卡#1，则上述所有操作均不会发生，并且该视图将显示为应有的样子.

Here's the next kicker. If I navigate to tab #2, then back to tab #1, none of the above happens and the view appears exactly like it should.

奇怪-有人看到过这个，对发生的事情有一个想法吗?

Strange - anyone seen this and have an idea of what's going on?

编辑

以下是一个YouTube视频，显示该视频无法正常工作: http://youtu.be/Shces88d6Go

Here's a YouTube video showing it not working: http://youtu.be/Shces88d6Go

推荐答案

发现我正在MainTabViewController的viewDidLoad方法中启动模式窗口.这在某种程度上使系统感到困惑，并且是问题的根源.

Found that I was launching a modal window in the viewDidLoad method of my MainTabViewController. This somehow confused the system and was the root of the problem.

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