xcode 在 iPhone 中显示/隐藏 TabBarController
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Show/Hide TabBarController in iphone
提问by David.Chu.ca
i am making an application in iphone in which i have 4 tabbars & in one of its tab i have 4 views in 2nd view it needs to hide the tab bar. I am able to hide the tab bar using the setHidesBottomBarWhenPushed:YES in in the initWithNib method of the Viewcontroller being pushed. But when navigating to the screen 3 , calling the same method with "NO" does not make the tab bar appear. any ideas?
我正在 iphone 中制作一个应用程序，其中我有 4 个标签栏，并且在它的一个标签中，我在第二个视图中有 4 个视图，它需要隐藏标签栏。我可以在被推送的 Viewcontroller 的 initWithNib 方法中使用 setHidesBottomBarWhenPushed:YES 隐藏标签栏。但是当导航到屏幕 3 时，使用“NO”调用相同的方法不会使标签栏出现。有任何想法吗？
回答by esilver
John Smith is correct. The URL for that sample is: http://developer.apple.com/iphone/library/samplecode/TheElements/index.html
约翰史密斯是对的。该示例的 URL 是：http: //developer.apple.com/iphone/library/samplecode/TheElements/index.html
The code that does this is in AtomicElementViewController.m, and the line that achieves this effect is in the init method:
执行此操作的代码在 AtomicElementViewController.m 中，实现此效果的代码在 init 方法中：
self.hidesBottomBarWhenPushed = YES;
回答by David.Chu.ca
I had the same issue to show or hide tab bar controller with UITableViewController customized class. Somehow, by using the following codes, does not work to hide tab bar controller:
我在使用 UITableViewController 自定义类显示或隐藏标签栏控制器时遇到了同样的问题。不知何故，通过使用以下代码，无法隐藏标签栏控制器：
- (void) viewDidLoad {
self.hidesBottomBarWhenPushed = YES;
}
In the case of storyboard with segue, initWithStyle: method does not get called.
在带有 segue 的情节提要的情况下，不会调用 initWithStyle: 方法。
Instead, I have to overwrite the property to make it work:
相反，我必须覆盖该属性才能使其工作：
- (BOOL) hidesBottomBarWhenPushed {
return YES;
}
My case is for iOS 5.1 with storyboard and segue to push to the next view (where I want to hide tab bar controller).
我的情况是 iOS 5.1 的故事板和 segue 推送到下一个视图（我想隐藏标签栏控制器的地方）。
回答by John Smith
Take a look at Apple's Elements projects. They hide and unhide the tab-bar when you view and individual element.
看看 Apple 的 Elements 项目。当您查看单个元素时，它们会隐藏和取消隐藏标签栏。
回答by Jay
Before you push your 3rd view onto the stack, set the 2nd view's hidesBottomBarWhenPushed to NO.
在将第三个视图推入堆栈之前，将第二个视图的 hidesBottomBarWhenPushed 设置为 NO。
