如何在 iPhone 应用程序上仅支持纵向模式 [英] How to support only portrait mode on an iPhone app

问题描述

我正在开发的 iPhone 应用程序中遇到一个奇怪的问题.我希望我的应用支持仅纵向模式，但由于某种原因我不能这样做(设备和模拟器).

I have a strange problem in an iPhone app I'm developing. I want my app to support ONLY portrait mode, but for some reason I can't do it (device & simulator).

为了仅支持纵向模式，我做了如下操作:

To support only portrait mode I did as follow:

• 在 Xcode 的 TARGET summary 部分，我只选择了肖像.
• 我所有的 ViewController 都实现了 shouldAutorotateToInterfaceOrientation

但正如我所说，它不起作用，奇怪的结果是该应用支持所有方向(纵向、倒置、横向向左、向右横向).
有任何想法吗?

But as I said it won't work, and the strange result is that the app support ALL the orientations (portrait, upside down, landscape left, landscape right).
Any ideas?

这是我如何实现shouldAutorotateToInterfaceOrientation

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
     // Return YES for supported orientations
     NSLog(@"Checking orientation %d", interfaceOrientation);
     return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

我刚刚注意到，当我旋转手机时，我收到以下消息:

I notice just now that when I rotate the phone I get this message:

不推荐使用两阶段旋转动画.此应用程序应使用更流畅的单阶段动画."

"Two-stage rotation animation is deprecated. This application should use the smoother single-stage animation."

什么意思?

推荐答案

屏幕上可以有多个 ViewController.UITabBarController 本身就是一个 UIViewController，它只会将 shouldAutorotateToInterfaceOrientation: 请求传递给它选择的视图控制器.默认实现会这样做，但如果您将其子类化，XCode 生成的代码(从 iOS 5.1 开始)不会.

It is possible to have multiple ViewControllers on the screen. The UITabBarController is itself a UIViewController, and it only passes shouldAutorotateToInterfaceOrientation: requests to the viewControllers within if it chooses. The default implementation does this, but if you subclass it, the code XCode generates (as of iOS 5.1) does not.

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