blocks|key|78698|text|对于Swift+3+&+Swift+4，它已更改为重写如下所示的变量：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|78699|override+var+prefersStatusBarHidden:+Bool+{
++return+true
}|code-block|syntax|javascript|78700|如果要在视图控制器已经显示后“更新”状态，则需要调用：|78701|setNeedsStatusBarAppearanceUpdate()|78702|请参阅文档。|78703|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/uikit/uiviewcontroller/1621440-prefersstatusbarhidden^0|2|7|C|7|0|0|0|0|3|2|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|D|@$9|17|A|18|1|19]]|E|$]]|$1|Q|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

For Swift 3 &amp; Swift 4 it has changed to overriding a variable like this:

<pre><code>override var prefersStatusBarHidden: Bool {
 return true
}
</code></pre>

If you want to "Update" the state once the view controller is already being displayed, you will need to call:

<pre><code>setNeedsStatusBarAppearanceUpdate()
</code></pre>

Please refer to the <a href="https://developer.apple.com/documentation/uikit/uiviewcontroller/1621440-prefersstatusbarhidden" rel="noreferrer">documentation</a>.

blocks|key|2105182|text|对于Swift+3和Swift+4.2，视图将在何时出现|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2105183|override+func+viewWillAppear(_+animated:+Bool)+{
++++super.viewWillAppear(animated)

++++UIApplication.shared.isStatusBarHidden+=+true
}|code-block|syntax|javascript|2105184|当视图到Dissapear时|2105185|override+func+viewWillDisappear(_+animated:+Bool)+{
++++super.viewWillDisappear(animated)

++++UIApplication.shared.isStatusBarHidden+=+false
}|2105186|您可能需要在您的info.plist中设置下一行：|2105187|View+controller-based+status+bar+appearance+=+NO|2105188|​|2105189|📷|atomic|2105190|2105191|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/00c8072bf4af91919f877592f8e3861a.png|imageAlt^0|2|H|0|0|0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1A|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1B|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|1C|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1D|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|1E|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|1F|8|@]|D|@]|E|$]]|$1|U|3|V|5|W|7|1G|8|@]|D|@$9|1H|A|1I|1|1J]]|E|$]]|$1|X|3|T|5|6|7|1K|8|@]|D|@]|E|$]]|$1|Y|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|Z|$10|$5|11|12|13|E|$14|15|16|-4]]]]

For Swift 3 and Swift 4.2
when view going to Appear

<pre><code>override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(animated)

 UIApplication.shared.isStatusBarHidden = true
}
</code></pre>

when view goint to Dissapear

<pre><code>override func viewWillDisappear(_ animated: Bool) {
 super.viewWillDisappear(animated)

 UIApplication.shared.isStatusBarHidden = false
}
</code></pre>

It's possible you need set in your info.plist, next line:

<pre><code>View controller-based status bar appearance = NO
</code></pre>

<a href="https://i.stack.imgur.com/nBcX6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nBcX6.png" alt="enter image description here"></a>

blocks|key|67449|text|在UIViewController中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|67450|override+func+viewDidAppear(_+animated:+Bool)+{
++++super.viewDidAppear(animated)
++++UIApplication.shared.isStatusBarHidden+=+true
}

+override+func+viewWillDisappear(_+animated:+Bool)+{
++++super.viewWillDisappear(animated)
++++//It+will+show+the+status+bar+again+after+dismiss
++++UIApplication.shared.isStatusBarHidden+=+false
}

override+var+prefersStatusBarHidden:+Bool+{
++++return+true
}|code-block|syntax|javascript|67451|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|$]]

In your UIViewController: 

<pre><code>override func viewDidAppear(_ animated: Bool) {
 super.viewDidAppear(animated)
 UIApplication.shared.isStatusBarHidden = true
}

 override func viewWillDisappear(_ animated: Bool) {
 super.viewWillDisappear(animated)
 //It will show the status bar again after dismiss
 UIApplication.shared.isStatusBarHidden = false
}

override var prefersStatusBarHidden: Bool {
 return true
}
</code></pre>

blocks|key|78662|text|在iOS+9，Xcode+7，SWIFT2.0中，它回到了以前的样子。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78663|override+func+prefersStatusBarHidden()+->+Bool+{
++++++++return+true
}|code-block|syntax|javascript|78664|实际上，Xcode会告诉您|78665|UIApplication.sharedApplication().setStatusBarHidden(true,+withAnimation:+.None)+|78666|已经被否决，您应该使用prefersStatusBarHidden方法。|78667|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In iOS 9, Xcode 7, Swift 2.0, it's back to how it was previously.

<pre><code>override func prefersStatusBarHidden() -&gt; Bool {
 return true
}
</code></pre>

In fact Xcode will tell you that

<pre><code>UIApplication.sharedApplication().setStatusBarHidden(true, withAnimation: .None) 
</code></pre>

has been deprecated and that you should use the prefersStatusBarHidden method.

blocks|key|67979|text|对于Swift+3，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|67980|override+var+prefersStatusBarHidden:+Bool{
++++++++return+true
++++}|code-block|syntax|javascript|67981|并添加viewDidLoad()|offset|length|style|CODE|67982|self.modalPresentationCapturesStatusBarAppearance+=+true|67983|entityMap^0|0|0|3|D|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

For Swift 3,

<pre><code>override var prefersStatusBarHidden: Bool{
 return true
 }
</code></pre>

and add <code>viewDidLoad()</code>

<pre><code>self.modalPresentationCapturesStatusBarAppearance = true
</code></pre>

blocks|key|79025|text|可以通过简单的在ViewController中重写+prefersStatusBarHidden属性来实现这一点，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|79026|override+var+prefersStatusBarHidden:+Bool+{
+++return+true
}|code-block|syntax|javascript|79027|​|79028|📷|atomic|79029|79030|这适用于Swift+3/4。|79031|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/65d10056d1a8abac50a7e6e089e478c5.png|imageAlt^0|7|I|Q|M|0|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]|$9|15|A|16|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|17|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|18|8|@]|E|@]|F|$]]|$1|N|3|O|5|P|7|19|8|@]|E|@$9|1A|A|1B|1|1C]]|F|$]]|$1|Q|3|M|5|6|7|1D|8|@]|E|@]|F|$]]|$1|R|3|S|5|6|7|1E|8|@]|E|@]|F|$]]|$1|T|3|-4|5|6|7|1F|8|@]|E|@]|F|$]]]|U|$V|$5|W|X|Y|F|$Z|10|11|-4]]]]

You can achieve this by simply overriding <code>prefersStatusBarHidden</code> property in your ViewController as shown below :

<pre><code>override var prefersStatusBarHidden: Bool {
 return true
}
</code></pre>

<a href="https://i.stack.imgur.com/pVk7p.png" rel="noreferrer"><img src="https://i.stack.imgur.com/pVk7p.png" alt="Screenshot added"></a>

This works for Swift 3/4.

blocks|key|79095|text|仅使用UIAnimation和存储的属性就可以顺利地隐藏状态栏。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|79096|Swift+3%2B|offset|length|style|BOLD|79097|++var+statusBarState+=+false
++++override+var+prefersStatusBarHidden:+Bool{
++++++++return+statusBarState
++++}|code-block|syntax|javascript|79098|然后在viewWillAppear|79099|++override+func+viewWillAppear(_+animated:+Bool)+{
++++++++super.viewWillAppear(animated)
++++++++statusBarState+=+true
++++++++UIView.animate(withDuration:+0.30)+{
++++++++++++self.setNeedsStatusBarAppearanceUpdate()
++++++++}
++++}|79100|​|79101|📷|atomic|79102|79103|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/a954b29d6c13afa4d8f5b8052bfb99d0.gif|imageAlt^0|0|0|8|0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@$D|17|E|18|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|19|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1B|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|U|7|1D|8|@]|9|@$D|1E|E|1F|1|1G]]|A|$]]|$1|V|3|R|5|6|7|1H|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13|14|-4]]]]

Hide Status Bar smoothly by just using UIAnimation and stored property.

Swift 3+

<pre><code> var statusBarState = false
 override var prefersStatusBarHidden: Bool{
 return statusBarState
 }
</code></pre>

And then in viewWillAppear

<pre><code> override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(animated)
 statusBarState = true
 UIView.animate(withDuration: 0.30) {
 self.setNeedsStatusBarAppearanceUpdate()
 }
 }
</code></pre>

<a href="https://i.stack.imgur.com/9Ihra.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9Ihra.gif" alt="enter image description here"></a>

blocks|key|67432|text|对于那些仍在苦苦挣扎的人来说，下面的内容适用于iOS9。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|67433|您可以通过从您的单个子/外孙rootViewController调用它来更新prefersStatusBarHidden函数。在将childViewControllers直接添加到rootViewController的情况下，这是可行的。|67434|您不需要在info.plist中设置任何内容，但是设置'statusBarIsInitiallyHidden‘独立于下面。|67435|首先，在rootViewController中添加以下内容：|67436|-(void)viewDidLoad+{
++++[[NSNotificationCenter+defaultCenter]+addObserver:self+selector:@selector(updateStatusBarAppearance:)+name:@"kStatusBarAppearance"+object:nil];+
}
-(void)updateStatusBarAppearance:(NSNotification+*)n+{
++++statusBarIsHidden+=+[n.object+boolValue];
++++[self+setNeedsStatusBarAppearanceUpdate];
}
-(UIStatusBarStyle)preferredStatusBarStyle+{
++++return+UIStatusBarStyleLightContent;+//optional
}
-(BOOL)prefersStatusBarHidden{
++++return+statusBarIsHidden;
}|code-block|syntax|javascript|67437|然后，在要隐藏状态栏的单一视图控制器中，调用以下命令：|67438|-(void)viewDidLoad+{
++++[[NSNotificationCenter+defaultCenter]+postNotificationName:@"kStatusBarAppearance"+object:[NSNumber+numberWithBool:true]];
}
-(void)popSelf+{
++++[[NSNotificationCenter+defaultCenter]+postNotificationName:@"kStatusBarAppearance"+object:[NSNumber+numberWithBool:false]];
}|67439|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|Y|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

For those still struggling, the below works for iOS9.

You update the rootViewController prefersStatusBarHidden function by calling it from your individual child/grandchild viewControllers. This works where you add childViewControllers directly to your rootViewController. 

You don't need to set anything in the info.plist, but setting setting 'statusBarIsInitiallyHidden' works independently of the below.

First, in your rootViewController, add the following:

<pre><code>-(void)viewDidLoad {
 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateStatusBarAppearance:) name:@"kStatusBarAppearance" object:nil]; 
}
-(void)updateStatusBarAppearance:(NSNotification *)n {
 statusBarIsHidden = [n.object boolValue];
 [self setNeedsStatusBarAppearanceUpdate];
}
-(UIStatusBarStyle)preferredStatusBarStyle {
 return UIStatusBarStyleLightContent; //optional
}
-(BOOL)prefersStatusBarHidden{
 return statusBarIsHidden;
}
</code></pre>

Then, in the single view controller where you want to hide the status bar, call this:

<pre><code>-(void)viewDidLoad {
 [[NSNotificationCenter defaultCenter] postNotificationName:@"kStatusBarAppearance" object:[NSNumber numberWithBool:true]];
}
-(void)popSelf {
 [[NSNotificationCenter defaultCenter] postNotificationName:@"kStatusBarAppearance" object:[NSNumber numberWithBool:false]];
}
</code></pre>

blocks|key|79077|text|当其他一切都失败时(就像对我一样)，斯威夫特4.1|type|unstyled|depth|inlineStyleRanges|entityRanges|data|79078|不需要编辑.plist。AppStore会批准的|79079|(UIApplication.shared.value(forKey:+"statusBarWindow")+as?+UIWindow)?.isHidden+=+false|code-block|syntax|javascript|79080|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<h3>When all else fails (as it did for me) Swift 4.1</h3>

No editing of .plist required. And AppStore will approve it

<pre><code>(UIApplication.shared.value(forKey: "statusBarWindow") as? UIWindow)?.isHidden = false
</code></pre>

blocks|key|2105511|text|一个迟来的答案，但如果您需要另一种解决方案，可以使用以下方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2105512|public+func+ShowStatusBar()+{

++++let+statusBarWindow+=+UIApplication.shared.value(forKey:+"statusBarWindow")+as?+UIWindow
++++UIView.animate(withDuration:+0.3)+{
++++++++statusBarWindow?.alpha+=+1
++++}
}

public+func+HideStatusBar()+{

++++let+statusBarWindow+=+UIApplication.shared.value(forKey:+"statusBarWindow")+as?+UIWindow
++++UIView.animate(withDuration:+0.3)+{
++++++++statusBarWindow?.alpha+=+0
++++}
}|code-block|syntax|javascript|2105513|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|$]]

A late answer but if you need an alternative solution you can use this:

<pre><code>public func ShowStatusBar() {

 let statusBarWindow = UIApplication.shared.value(forKey: "statusBarWindow") as? UIWindow
 UIView.animate(withDuration: 0.3) {
 statusBarWindow?.alpha = 1
 }
}

public func HideStatusBar() {

 let statusBarWindow = UIApplication.shared.value(forKey: "statusBarWindow") as? UIWindow
 UIView.animate(withDuration: 0.3) {
 statusBarWindow?.alpha = 0
 }
}
</code></pre>

blocks|key|78722|text|您可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78723|override+public+func+viewWillAppear(animated:+Bool)+{
++++super.viewWillAppear(animated)
++++//+hide+status+bar
++++dispatch_async(dispatch_get_main_queue(),+{
++++++++if+let+window+=+UIApplication.sharedApplication().keyWindow+{
++++++++++++window.windowLevel+=+UIWindowLevelStatusBar+%2B+1
++++++++}
++++})

}

override+public+func+viewWillDisappear(animated:+Bool)+{
++++super.viewWillDisappear(animated)
++++//+Show+status+bar
++++dispatch_async(dispatch_get_main_queue(),+{
++++++++if+let+window+=+UIApplication.sharedApplication().keyWindow+{
++++++++++++window.windowLevel+=+UIWindowLevelNormal
++++++++}
++++})

}|code-block|syntax|javascript|78724|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|$]]

You can use

<pre><code>override public func viewWillAppear(animated: Bool) {
 super.viewWillAppear(animated)
 // hide status bar
 dispatch_async(dispatch_get_main_queue(), {
 if let window = UIApplication.sharedApplication().keyWindow {
 window.windowLevel = UIWindowLevelStatusBar + 1
 }
 })

}

override public func viewWillDisappear(animated: Bool) {
 super.viewWillDisappear(animated)
 // Show status bar
 dispatch_async(dispatch_get_main_queue(), {
 if let window = UIApplication.sharedApplication().keyWindow {
 window.windowLevel = UIWindowLevelNormal
 }
 })

}
</code></pre>

blocks|key|67518|text|使用以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|67519|override+func+viewWillAppear(_+animated:+Bool)+{
++++super.viewWillAppear(animated)

++++UIApplication.shared.isStatusBarHidden+=+true
}|code-block|syntax|javascript|67520|如果此代码不能工作，则需要在info.plist中添加此键|67521|基于视图控制器的状态栏外观-没有|offset|length|style|BOLD|67522|entityMap^0|0|0|0|2|E|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Use this code:

<pre><code>override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(animated)

 UIApplication.shared.isStatusBarHidden = true
}
</code></pre>

if this code doesn't work, you need to add this key in the info.plist

View controller-based status bar appearance - NO

blocks|key|78941|text|我正在使用Xcode版本9.2+/SWIFT3.2/+iOS+11|type|unstyled|depth|inlineStyleRanges|entityRanges|data|78942|我从BADCloud那里得到了这个答案，虽然我不知道为什么它对他无效。|offset|length|78943|无论如何，对于特定的视图控制器来说，它是有效的。|78944|这个答案和这里的其他答案的不同之处在于，在我的info.plist中，当我最初使用基于视图控制器的状态栏外观时，它与下面的2+statusBar方法不起作用，但当我将其更改为Yes时，这两种方法都可以使用。|style|CODE|78945|在info.plist更改中:基于视图控制器的状态栏外观是|BOLD|78946|📷|atomic|78947|​|78948|在视图控制器中，您希望在add中更改它：|78949|override+func+viewDidLoad()+{
++++++++super.viewDidLoad()

++++++++//+add+this+in+ViewDidLoad
++++++++setNeedsStatusBarAppearanceUpdate()
}

//+add+this+underneath+ViewDidLoad
override+var+prefersStatusBarHidden:+Bool+{
++return+true
}|code-block|syntax|javascript|78950|entityMap|0|LINK|mutability|MUTABLE|url|https://forums.developer.apple.com/thread/88817|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/f0050e0d0ada76352387740174269a82.png|imageAlt^0|0|2|8|0|0|0|N|A|0|1|A|H|C|0|0|1|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1F|8|@]|9|@$D|1G|E|1H|1|1I]]|A|$]]|$1|F|3|G|5|6|7|1J|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1K|8|@$D|1L|E|1M|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1N|8|@$D|1O|E|1P|J|K]|$D|1Q|E|1R|J|N]]|9|@]|A|$]]|$1|O|3|P|5|Q|7|1S|8|@]|9|@$D|1T|E|1U|1|1V]]|A|$]]|$1|R|3|S|5|6|7|1W|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1X|8|@]|9|@]|A|$]]|$1|V|3|W|5|X|7|1Y|8|@]|9|@]|A|$Y|Z]]|$1|10|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]|18|$5|19|14|1A|A|$1B|1C|1D|-4]]]]

I'm using Xcode Version 9.2 / Swift 3.2 / iOS 11

I got this answer form <a href="https://forums.developer.apple.com/thread/88817" rel="nofollow noreferrer">BADCloud</a> although I'm not sure why it didn't work for him.

Anyway it worked for me for a specific view controller. 

The difference between this answer and the other answers on here is that in my <code>info.plist</code> when I initially had View controller-based status bar appearance - NO with the 2 statusBar methods below it didn't work but when I changed it to Yes is worked with both of them.

In the <code>info.plist</code> change:
View controller-based status bar appearance - YES
<a href="https://i.stack.imgur.com/pz806.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pz806.png" alt="enter image description here"></a>

In the view controller you want it changed in add:

<pre><code>override func viewDidLoad() {
 super.viewDidLoad()

 // add this in ViewDidLoad
 setNeedsStatusBarAppearanceUpdate()
}

// add this underneath ViewDidLoad
override var prefersStatusBarHidden: Bool {
 return true
}
</code></pre>

blocks|key|68025|text|iOS+11和Swift+4的完整解决方案，让您完全控制您的程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|68026|var+statusBarHidden+:+Bool?

override+var+prefersStatusBarHidden:+Bool+{
++++get+{
++++++++if+let+status+=+statusBarHidden+{+return+status+}+else+{+return+false+}
++++}
++++set(status)+{
++++++++statusBarHidden+=+status
++++++++setNeedsStatusBarAppearanceUpdate()
++++}
}|code-block|syntax|javascript|68027|现在，您可以通过设置代码中的属性来显示或隐藏状态栏。我是这样测试的：|68028|@IBAction+func+Show(_+sender:+Any)+{
++++prefersStatusBarHidden+=+false
}

@IBAction+func+Hide(_+sender:+Any)+{
++++prefersStatusBarHidden+=+true
}|68029|就像一种魅力。|68030|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Complete solution for iOS 11 and Swift 4, giving you full control from your program.

<pre><code>var statusBarHidden : Bool?

override var prefersStatusBarHidden: Bool {
 get {
 if let status = statusBarHidden { return status } else { return false }
 }
 set(status) {
 statusBarHidden = status
 setNeedsStatusBarAppearanceUpdate()
 }
}
</code></pre>

Now you can simply show or hide the status bar by setting the property from your code. I tested it like this:

<pre><code>@IBAction func Show(_ sender: Any) {
 prefersStatusBarHidden = false
}

@IBAction func Hide(_ sender: Any) {
 prefersStatusBarHidden = true
}
</code></pre>

Works like a charm.

blocks|key|67391|text|UIApplication.sharedApplication().setStatusBarHidden(true,+withAnimation:+.None)+|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|67392|当你想把它放回一个单独的VC里时：|unstyled|67393|UIApplication.sharedApplication().setStatusBarHidden(false,+withAnimation:+.None)+|67394|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>UIApplication.sharedApplication().setStatusBarHidden(true, withAnimation: .None) 
</code></pre>

and when you want it back in a separate VC:

<pre><code>UIApplication.sharedApplication().setStatusBarHidden(false, withAnimation: .None) 
</code></pre>

In a ViewController, which I presented modally, I did this:

<pre><code>override func prefersStatusBarHidden() -&gt; Bool {
 return true
}
</code></pre>

This used to work, but it no longer works. What's the best way to hide the status bar only for this view controller?

How to hide status bar of a single view controller in iOS 9?

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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在我经常介绍的ViewController中，我这样做了：override func prefersStatusBarHidden() -> Bool {    return true}这过去很管用，但现在行不通了。什么是最好的方法来隐藏状态栏仅这个视图控制器？

问如何在iOS 9中隐藏单个视图控制器的状态栏？
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问如何在iOS 9中隐藏单个视图控制器的状态栏？
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