blocks|key|4764883|text|我不知道为什么要投票结束这个问题，如果我能重复这种行为很多次。UIViewController位于以模式方式打开的UINavigationController中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4764884|这就是我为解决这个问题所做的。|4764885|我创建这个类，并设置为包含要防止旋转的UINavigationController的UIViewController。|4764886|class+NavigationController:+UINavigationController+{+

++++override+var+shouldAutorotate:+Bool+{
++++++++return+false
++++}

++++override+var+supportedInterfaceOrientations:+UIInterfaceOrientationMask+{
++++++++return+.portrait
++++}

}|code-block|syntax|javascript|4764887|就这样，这对我来说很管用|4764888|entityMap^0|V|G|1L|M|0|0|J|M|16|G|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|13|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|14|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|R|$]]

I don't know why is a vote to close the question if I can reproduce this behavior a lots of times. The <code>UIViewController</code> is inside a <code>UINavigationController</code> opened modally.

This is what I did to solve the problem.

I create this class and I set to the <code>UINavigationController</code> that containt the <code>UIViewController</code> that I want to prevent to rotate

<pre><code>class NavigationController: UINavigationController { 

 override var shouldAutorotate: Bool {
 return false
 }

 override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
 return .portrait
 }

}
</code></pre>

And thats it, it works for me

blocks|key|4365607|text|将此代码添加到AppDelegate.swift|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4365608|var+orientationLock+=+UIInterfaceOrientationMask.all
func+application(_+application:+UIApplication,+supportedInterfaceOrientationsFor+window:+UIWindow?)+->+UIInterfaceOrientationMask+{
++++return+self.orientationLock
}

struct+AppUtility+{
++++static+func+lockOrientation(_+orientation:+UIInterfaceOrientationMask)+{
++++++++if+let+delegate+=+UIApplication.shared.delegate+as?+AppDelegate+{
++++++++++++delegate.orientationLock+=+orientation
++++++++}
++++}

++++static+func+lockOrientation(_+orientation:+UIInterfaceOrientationMask,+andRotateTo+rotateOrientation:UIInterfaceOrientation)+{
++++++++self.lockOrientation(orientation)
++++++++UIDevice.current.setValue(rotateOrientation.rawValue,+forKey:+"orientation")
++++}
}|code-block|syntax|javascript|4365609|添加到要强制定向的视图控制器中：|4365610|override+func+viewDidAppear(_+animated:+Bool)+{
++++super.viewDidAppear(animated)
++++//let+value+=+UIInterfaceOrientation.landscapeLeft.rawValue
++++//UIDevice.current.setValue(value,+forKey:+"orientation")


++++AppDelegate.AppUtility.lockOrientation(.landscapeLeft)

}|4365611|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Add this code to AppDelegate.swift

<pre><code>var orientationLock = UIInterfaceOrientationMask.all
func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -&gt; UIInterfaceOrientationMask {
 return self.orientationLock
}

struct AppUtility {
 static func lockOrientation(_ orientation: UIInterfaceOrientationMask) {
 if let delegate = UIApplication.shared.delegate as? AppDelegate {
 delegate.orientationLock = orientation
 }
 }

 static func lockOrientation(_ orientation: UIInterfaceOrientationMask, andRotateTo rotateOrientation:UIInterfaceOrientation) {
 self.lockOrientation(orientation)
 UIDevice.current.setValue(rotateOrientation.rawValue, forKey: "orientation")
 }
}
</code></pre>

Add to the viewcontroller that you want to force an orientation:

<pre><code>override func viewDidAppear(_ animated: Bool) {
 super.viewDidAppear(animated)
 //let value = UIInterfaceOrientation.landscapeLeft.rawValue
 //UIDevice.current.setValue(value, forKey: "orientation")


 AppDelegate.AppUtility.lockOrientation(.landscapeLeft)

}
</code></pre>

blocks|key|2678499|text|我发现iOS+11根本没有调用这些方法，除非我在UIApplicationDelegate类中实现了以下UIApplicationDelegate方法：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2678500|application(_+application:+UIApplication,+supportedInterfaceOrientationsFor+window:+UIWindow?)|code-block|syntax|javascript|2678501|entityMap^0|O|L|1G|L|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

I found that iOS 11 wasn't calling these methods at all unless I had implemented the following <code>UIApplicationDelegate</code> method in my <code>AppDelegate</code> class:

<pre><code>application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?)
</code></pre>

blocks|key|4764980|text|对我来说，投票结果无效。相反，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4764981|override+open+var+shouldAutorotate:+Bool+{
++++return+false
}

override+open+var+preferredInterfaceOrientationForPresentation:+UIInterfaceOrientation+{
++++return+UIApplication.shared.statusBarOrientation
}|code-block|syntax|javascript|4764982|这些密码有效。在Swift+4确认。|4764983|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

For me, the voted answer didn't work. Instead,

<pre><code>override open var shouldAutorotate: Bool {
 return false
}

override open var preferredInterfaceOrientationForPresentation: UIInterfaceOrientation {
 return UIApplication.shared.statusBarOrientation
}
</code></pre>

Those codes work. Confirmed in Swift 4.

blocks|key|4764985|text|iOS+11，Swift+5|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4764986|新的秘密说明是将其添加到viewDidLoad()中。|4764987|UIDevice.current.setValue(self.preferredInterfaceOrientationForPresentation.rawValue,+forKey:+"orientation")|CODE|4764988|还请确保重写preferredInterfaceOrientationForPresentation以返回首选方向：|4764989|override+var+preferredInterfaceOrientationForPresentation+:+UIInterfaceOrientation+{+++++return+UIInterfaceOrientation.portrait+}|4764990|在这里找到答案：https://nunoalexandre.com/2018/08/24/forcing-an-orientation-in-ios|4764991|entityMap|0|LINK|mutability|MUTABLE|url|https://nunoalexandre.com/2018/08/24/forcing-an-orientation-in-ios^0|0|E|0|0|0|30|0|0|0|3L|0|8|1U|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|12|8|@$9|13|A|14|B|J]]|D|@]|E|$]]|$1|K|3|L|5|6|7|15|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|16|8|@$9|17|A|18|B|J]]|D|@]|E|$]]|$1|O|3|P|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|Q|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

iOS 11, Swift 5

The new secret sauce is to add this in viewDidLoad()

<code>UIDevice.current.setValue(self.preferredInterfaceOrientationForPresentation.rawValue, forKey: "orientation")</code>

Also be sure to override preferredInterfaceOrientationForPresentation to return your preferred orientation:

<code>override var preferredInterfaceOrientationForPresentation : UIInterfaceOrientation {
 return UIInterfaceOrientation.portrait
}</code>

Found the answer here:
<a href="https://nunoalexandre.com/2018/08/24/forcing-an-orientation-in-ios" rel="nofollow noreferrer">https://nunoalexandre.com/2018/08/24/forcing-an-orientation-in-ios</a>

blocks|key|4365661|text|斯威夫特5回答--2022年你就是这样做的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4365662|@objcMembers+class+YourViewController:+UIViewController
{
++++override+var+shouldAutorotate:+Bool+{+return+true+}
++++...
++++init()+{}
++++...
+}|code-block|syntax|javascript|4365663|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift 5 Answer - this is how you do it now in 2022
<pre><code>@objcMembers class YourViewController: UIViewController
{
 override var shouldAutorotate: Bool { return true }
 ...
 init() {}
 ...
 }
</code></pre>

I'm trying to prevent rotation on one <code>UIViewController</code> and I can't achieve that.

I'm doing something like this:

<pre><code>open override var shouldAutorotate: Bool {
 get {
 return false
 }
}

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
 get {
 return .portrait
 }
}
</code></pre>

And the <code>UIViewControler</code> stills rotating. The UIViewController is inside a UINavigationController opened modally.

I have looked a lot of questions from here and none answers works for me.

In Swift 2 I used to override <code>shouldAutorotate</code> but in Swift 3 that function doesn't exist anymore.

How can I do that in Swift 3 what I used to do in Swift 2?

overriding shouldAutorotate not working in Swift 3

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试图阻止在一个UIViewController上旋转，但我无法做到这一点。我在做这样的事情：open override var shouldAutorotate: Bool {    get {        return false    }}override var supportedInterfaceOrien...

问覆盖没有在Swift 3中工作的shouldAutorotate
EN

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问覆盖没有在Swift 3中工作的shouldAutorotateEN