如何在UINavigationController中的单个视图上强制使用特定的UIInterfaceOrientation？ [英] How do I force a specific UIInterfaceOrientation on an individual view in a UINavigationController?

问题描述

好的，所以情况如下：

我有一个应用程序，其中我只想在UINavigationController中有一个特定的视图来定位横向。这个视图是一个UIImageView，我正在捕获一个签名（这部分工作真棒）。所以，像这样：

I have an app in which I only want ONE specific view in a UINavigationController to have a landscape orientation. This view is a UIImageView that I'm capturing a signature on (THAT part works awesome). So, like this:

previous view --> signature view --> next view
 (portrait)        (landscape)       (portrait)

我似乎无法找到一种强制方法，在该签名屏幕上强制设备方向为横向。在签名视图上设置纵向是没有意义的，因为在屏幕宽度上签名的空间真的不足。

I can't seem to find a good way to force the device orientation to landscape on that signature screen. It'll never make sense to have a portrait orientation on the signature view because there's really not adequate room for signing in that screen width.

那么，关于如何进行任何明智的想法完成这个？我认为可能会以模态方式进行签名视图，从而打破导航控制器。想法？

So, any bright ideas on how to accomplish this? I've considered possibly doing the signature view modally, thus breaking out of the navigation controller. Thoughts?

推荐答案

您可以尝试强制设备旋转到必要的方向 - 但您需要手动处理它（除了重写UIViewController方向处理方法）。

You can try to force Device to rotate to necessary orientation - but you need to handle it manually (in addition to overriding UIViewController orientation handling methods).

要旋转设备，您可以使用下一种方法：

To rotate device you can use next methods:

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight];

但它可能无法在所有情况下使用...

But in it may not work in all situations...

也可用无证方法：

[[UIDevice currentDevice] performSelector:NSSelectorFromString(@"setOrientation:")
                                       withObject:(__bridge id)((void*)UIInterfaceOrientationLandscapeLeft)];

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