blocks|key|2272520|text|我知道，setStatusBarHidden:的文档并没有提到什么用途。但是UIApplication的头是这样的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2272521|//+Setting+statusBarHidden+does+nothing+if+your+application+is+using+the+default+UIViewController-based+status+bar+system.
@property(readwrite,+nonatomic,getter=isStatusBarHidden)+BOOL+statusBarHidden+NS_DEPRECATED_IOS(2_0,+9_0,+"Use+-[UIViewController+prefersStatusBarHidden]");
-+(void)setStatusBarHidden:(BOOL)hidden+withAnimation:(UIStatusBarAnimation)animation+NS_DEPRECATED_IOS(3_2,+9_0,+"Use+-[UIViewController+prefersStatusBarHidden]");|code-block|syntax|javascript|2272522|这里说明您应该在prefersStatusBarHidden上使用UIViewController，并使用基于视图控制器的statusbar样式。|2272523|现在所需要做的就是配置视图控制器是否需要显示隐藏状态栏。就像这样：|2272524|-+(BOOL)prefersStatusBarHidden+{
+++return+YES;
}|2272525|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIViewController_Class/#//apple_ref/occ/instm/UIViewController/prefersStatusBarHidden^0|4|J|12|D|0|0|8|M|X|G|8|M|0|0|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|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|M|3|N|5|6|7|1C|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|Q|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

I know that the documentation of <code>setStatusBarHidden:</code> does not mention on what use instead. But the header of <code>UIApplication</code> does. 

<pre><code>// Setting statusBarHidden does nothing if your application is using the default UIViewController-based status bar system.
@property(readwrite, nonatomic,getter=isStatusBarHidden) BOOL statusBarHidden NS_DEPRECATED_IOS(2_0, 9_0, "Use -[UIViewController prefersStatusBarHidden]");
- (void)setStatusBarHidden:(BOOL)hidden withAnimation:(UIStatusBarAnimation)animation NS_DEPRECATED_IOS(3_2, 9_0, "Use -[UIViewController prefersStatusBarHidden]");
</code></pre>

Here is stated that you should use the <a href="https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIViewController_Class/#//apple_ref/occ/instm/UIViewController/prefersStatusBarHidden"><code>prefersStatusBarHidden</code></a> on <code>UIViewController</code> and use view controller based statusbar styles.

All you need to do now is configure whether the view controller needs to show of hide the status bar. Like so :

<pre><code>- (BOOL)prefersStatusBarHidden {
 return YES;
}
</code></pre>

blocks|key|1084368|text|Swift-3|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1084369|+override+var+prefersStatusBarHidden:+Bool+{++
++++return+true++
}++|code-block|syntax|javascript|1084370|我从Here那里得到信息|1084371|将func更改为var|unordered-list-item|CODE|1084372|删除()|1084373|将->更改为:|1084374|这是因为计算变量有一个getter函数，所以您之前实现的函数只是变成getter函数。|1084375|2016年以后:很简单的事情|1084376|在info.plist上为statusBar隐藏添加以下两个属性|1084377|基于视图控制器的状态栏外观(布尔值:+NO)|1084378|状态栏最初是隐藏的(布尔值:是)|1084379|按来源分列|1084380|<key>UIStatusBarHidden</key>
<true/>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>|1084381|或|1084382|​|1084383|📷|atomic|1084384|1084385|老答案！..。|1084386|在application.statusBarHidden中添加didFinishLaunchingWithOptions|ordered-list-item|1084387|(BOOL)应用程序：(UIApplication*)应用程序didFinishLaunchingWithOptions:(NSDictionary+*)launchOptions+{+//覆盖点，用于在应用程序启动后进行定制。application.statusBarHidden+=是；返回是；}|1084388|再加上|1084389|在info.plist中添加此View+controller-based+status+bar+appearance集NO
基于视图控制器的状态栏外观=+NO|1084390|基于视图控制器的隐集|1084391|在视图控制器中添加方法。|1084392|Objective+|1084393|-+(BOOL)prefersStatusBarHidden+{
++++return+YES;
}|1084394|Swift高达2|1084395|override+func+prefersStatusBarHidden()+->+Bool+{
return+true
}|1084396|(很好)+2016.5.17在iOS+9.0中运行得很好。|1084397|最新答案|1084398|转到Info.plist文件|1084399|在其中一条线上悬停，就会出现(%2B)和(-)按钮。|1084400|单击加号按钮以添加新键|1084401|键入开始与大写V和自动的第一选择将是视图控制器基于状态栏外观。把它加进去作为钥匙。|1084402|将值设置为"NO“|1084403|请转到AppDelegate.m以获取Objective(快速语言:+AppDelegate.swift)|1084404|在方法中添加代码|1084405|目标C：：|1084406|-+(BOOL)application:(UIApplication+*)application+didFinishLaunchingWithOptions:(NSDictionary+*)launchOptions+{
++++[application+setStatusBarHidden:YES];

++++return+YES;
}|1084407|For+Swift:|1084408|func+application(application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[NSObject:AnyObject]?)+->+Bool+{
++++application.statusBarHidden+=+true

++++return+true
}|1084409|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/38732948/the-supportedinterfaceorientations-method-doesnt-override-any-method-from-its-s|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/3e9f288d55407457e74104069e7ec1fd.png|imageAlt^0|0|7|0|0|2|4|0|0|1|4|8|3|0|2|2|0|1|2|6|1|0|0|0|0|2|K|0|0|G|0|0|0|0|1|0|0|0|1|1|0|0|0|1|R|V|T|0|0|0|1|A|F|17|1N|2|0|0|0|0|A|0|0|0|8|0|0|0|0|4|0|0|0|0|I|C|0|0|0|0|4|1|0|0|0|A|0|0^^$0|@$1|2|3|4|5|6|7|37|8|@$9|38|A|39|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|3A|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|3B|8|@]|D|@$9|3C|A|3D|1|3E]]|E|$]]|$1|M|3|N|5|O|7|3F|8|@$9|3G|A|3H|B|P]|$9|3I|A|3J|B|P]]|D|@]|E|$]]|$1|Q|3|R|5|O|7|3K|8|@$9|3L|A|3M|B|P]]|D|@]|E|$]]|$1|S|3|T|5|O|7|3N|8|@$9|3O|A|3P|B|P]|$9|3Q|A|3R|B|P]]|D|@]|E|$]]|$1|U|3|V|5|6|7|3S|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|3T|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|3U|8|@]|D|@]|E|$]]|$1|10|3|11|5|6|7|3V|8|@$9|3W|A|3X|B|C]]|D|@]|E|$]]|$1|12|3|13|5|6|7|3Y|8|@$9|3Z|A|40|B|C]]|D|@]|E|$]]|$1|14|3|15|5|6|7|41|8|@]|D|@]|E|$]]|$1|16|3|17|5|H|7|42|8|@]|D|@]|E|$I|J]]|$1|18|3|19|5|6|7|43|8|@$9|44|A|45|B|C]]|D|@]|E|$]]|$1|1A|3|1B|5|6|7|46|8|@]|D|@]|E|$]]|$1|1C|3|1D|5|1E|7|47|8|@]|D|@$9|48|A|49|1|4A]]|E|$]]|$1|1F|3|1B|5|6|7|4B|8|@]|D|@]|E|$]]|$1|1G|3|1H|5|6|7|4C|8|@]|D|@]|E|$]]|$1|1I|3|1J|5|1K|7|4D|8|@$9|4E|A|4F|B|P]|$9|4G|A|4H|B|P]]|D|@]|E|$]]|$1|1L|3|1M|5|O|7|4I|8|@]|D|@]|E|$]]|$1|1N|3|1O|5|6|7|4J|8|@]|D|@]|E|$]]|$1|1P|3|1Q|5|1K|7|4K|8|@$9|4L|A|4M|B|P]|$9|4N|A|4O|B|P]|$9|4P|A|4Q|B|P]]|D|@]|E|$]]|$1|1R|3|1S|5|6|7|4R|8|@]|D|@]|E|$]]|$1|1T|3|1U|5|6|7|4S|8|@]|D|@]|E|$]]|$1|1V|3|1W|5|6|7|4T|8|@$9|4U|A|4V|B|C]]|D|@]|E|$]]|$1|1X|3|1Y|5|H|7|4W|8|@]|D|@]|E|$I|J]]|$1|1Z|3|20|5|6|7|4X|8|@$9|4Y|A|4Z|B|C]]|D|@]|E|$]]|$1|21|3|22|5|H|7|50|8|@]|D|@]|E|$I|J]]|$1|23|3|24|5|6|7|51|8|@]|D|@]|E|$]]|$1|25|3|26|5|6|7|52|8|@$9|53|A|54|B|C]]|D|@]|E|$]]|$1|27|3|28|5|1K|7|55|8|@]|D|@]|E|$]]|$1|29|3|2A|5|1K|7|56|8|@]|D|@]|E|$]]|$1|2B|3|2C|5|1K|7|57|8|@]|D|@]|E|$]]|$1|2D|3|2E|5|1K|7|58|8|@$9|59|A|5A|B|C]]|D|@]|E|$]]|$1|2F|3|2G|5|1K|7|5B|8|@]|D|@]|E|$]]|$1|2H|3|2I|5|1K|7|5C|8|@]|D|@]|E|$]]|$1|2J|3|2K|5|1K|7|5D|8|@]|D|@]|E|$]]|$1|2L|3|2M|5|6|7|5E|8|@$9|5F|A|5G|B|C]]|D|@]|E|$]]|$1|2N|3|2O|5|H|7|5H|8|@]|D|@]|E|$I|J]]|$1|2P|3|2Q|5|6|7|5I|8|@$9|5J|A|5K|B|C]]|D|@]|E|$]]|$1|2R|3|2S|5|H|7|5L|8|@]|D|@]|E|$I|J]]|$1|2T|3|-4|5|6|7|5M|8|@]|D|@]|E|$]]]|2U|$2V|$5|2W|2X|2Y|E|$2Z|30]]|31|$5|32|2X|33|E|$34|35|36|-4]]]]

Swift-3

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

I got the Information From <a href="https://stackoverflow.com/questions/38732948/the-supportedinterfaceorientations-method-doesnt-override-any-method-from-its-s">Here</a> 

<ul>
<li>Change <code>func</code> to <code>var</code></li>
<li>Delete <code>()</code></li>
<li>Change <code>-&gt;</code> to <code>:</code></li>
</ul>

This works because a computed variable has a getter function, so the function you were implementing before simply turns into the getter function

<hr>

2016 onwards: simple Thing like

On your info.plist add the following two property for statusBar Hidden

View controller-based status bar appearance (Boolean: NO)

Status bar is initially hidden (Boolean: YES)

By Source 

<pre><code>&lt;key&gt;UIStatusBarHidden&lt;/key&gt;
&lt;true/&gt;
&lt;key&gt;UIViewControllerBasedStatusBarAppearance&lt;/key&gt;
&lt;false/&gt;
</code></pre>

or

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

<hr>

Old answers ! ...

<ol>
<li>add <code>application.statusBarHidden</code> in <code>didFinishLaunchingWithOptions</code>

<pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
application.statusBarHidden = YES;
return YES;
}
</code></pre></li>
</ol>

and add 

<ol start="2">
<li>in <code>info.plist</code> add this <code>View controller-based status bar appearance</code> set <code>NO</code>

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

viewcontroller based hidden set 

Add method in your view controller.

Objective -C

<pre><code>- (BOOL)prefersStatusBarHidden {
 return YES;
}
</code></pre>

Swift upto 2

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

(GOOD) 2016.5.17 in iOS 9.0 worked nicely.

Updated Answer

<ol>
<li>Go to Info.plist file</li>
<li>Hover on one of those lines and a (+) and (-) button will show up.</li>
<li>Click the plus button to add new key</li>
<li>Type in start with capital V and automatically the first choice will be View controller-based status bar appearance. Add that as the KEY.</li>
<li>Set the VALUE to "NO"</li>
<li>Go to you AppDelegate.m for Objective-C (for swift language: AppDelegate.swift)</li>
<li>Add the code, inside the method</li>
</ol>

<hr>

For Objective-C:

<pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 [application setStatusBarHidden:YES];

 return YES;
}
</code></pre>

<hr>

For Swift:

<pre><code>func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject:AnyObject]?) -&gt; Bool {
 application.statusBarHidden = true

 return true
}
</code></pre>

blocks|key|1084411|text|在info.plist中添加以下两个属性。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1084412|View+controller-based+status+bar+appearance+(NO)

Status+bar+is+initially+hidden+(YES)|code-block|syntax|javascript|1084413|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 info.plist add the following two property.

<pre><code>View controller-based status bar appearance (NO)

Status bar is initially hidden (YES)
</code></pre>

blocks|key|1806279|text|下面是如何轻松返回对iOS+9%2B和Swift+3%2B的状态栏可见性的控制|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1806280|将具有YES值的YES键添加到Info.plist中。|ordered-list-item|CODE|1806281|将此变量添加到视图控制器：
私有变量isStatusBarHidden+=+false+{+didSet+{+setNeedsStatusBarAppearanceUpdate()+}|1806282|重写prefersStatusBarHidden属性：
覆盖var+prefersStatusBarHidden:+Bool+{返回isStatusBarHidden+}|1806283|就这样。现在，您可以随时调用isStatusBarHidden+=+true和isStatusBarHidden+=+false。|1806284|entityMap^0|A|6|H|8|0|3|3|8|3|F|A|0|0|2|M|0|E|O|13|P|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|W|8|@$9|X|A|Y|B|I]|$9|Z|A|10|B|I]|$9|11|A|12|B|I]]|D|@]|E|$]]|$1|J|3|K|5|H|7|13|8|@]|D|@]|E|$]]|$1|L|3|M|5|H|7|14|8|@$9|15|A|16|B|I]]|D|@]|E|$]]|$1|N|3|O|5|6|7|17|8|@$9|18|A|19|B|I]|$9|1A|A|1B|B|I]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|Q|$]]

Here's how do you easily return a control over status bar visibility for iOS 9+ and Swift 3+:

<ol>
<li>Add <code>View controller-based status bar appearance</code> key with <code>YES</code> value to <code>Info.plist</code>.</li>
<li>Add this variable to the view controller:

<pre><code>private var isStatusBarHidden = false {
 didSet {
 setNeedsStatusBarAppearanceUpdate()
 }
}
</code></pre></li>
<li>Override <code>prefersStatusBarHidden</code> property:

<pre><code>override var prefersStatusBarHidden: Bool {
 return isStatusBarHidden
}
</code></pre></li>
</ol>

That's it. Now you are able to call <code>isStatusBarHidden = true</code> and <code>isStatusBarHidden = false</code> whenever you want.

blocks|key|1806344|text|如果由于某种原因需要View+controller-based+status+bar+appearance等于YES+(例如，保持状态栏为白色)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1806345|在AppDelegate的didFinishLaunchingWithOptions方法或设置navigationController的任何地方：|1806346|yourNavigationController.navigationBar.barStyle+=+.black|code-block|syntax|javascript|1806347|然后使用alex-staravoitau的出色答案，并在隐藏状态栏的地方添加这段代码：|1806348|override+var+preferredStatusBarStyle:+UIStatusBarStyle+{
++return+.lightContent
}|1806349|我不确定这是否是实现这一结果的正确方法，但它对我有效，我希望它也能帮助到其他人:)|1806350|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/39735156/611879^0|A|17|1J|3|0|D|T|0|0|4|G|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|18|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|O|3|P|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1E|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

If for some reason you need <code>View controller-based status bar appearance</code> equal to <code>YES</code> (for example to keep status bar white)

on AppDelegate's <code>didFinishLaunchingWithOptions</code> method or wherever you setup your navigationController:

<pre><code>yourNavigationController.navigationBar.barStyle = .black
</code></pre>

then use <a href="https://stackoverflow.com/a/39735156/611879">alex-staravoitau</a>'s awesome answer and add this code wherever you'll be hiding the status bar:

<pre><code>override var preferredStatusBarStyle: UIStatusBarStyle {
 return .lightContent
}
</code></pre>

I'm not sure if this is the right way to achieve this result, but it worked for me and I hope it helps someone else too :)

blocks|key|2272787|text|在大多数iOS中，它都能工作。我已经用iOS+10进行了测试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2272788|开放info.plist|ordered-list-item|2272789|“查看基于控制器的状态栏外观”设置为“否”|2272790|“状态栏最初隐藏”设置为“是”|2272791|完成|2272792|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|O|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|P|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Q|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|L|$]]

In most of the iOS it will work. I have tested with iOS 10.

<ol>
<li>Open info.plist</li>
<li>"View controller-based status bar appearance" set to NO</li>
<li>"Status bar is initially hidden" set to YES</li>
<li>Done</li>
</ol>

blocks|key|1084484|text|一种简单的方法是根据您的需要将应用程序的windowLevel设置为普通或statusBar，所以开始|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1084485|目标-C|blockquote|BOLD|1084486|以隐藏状态栏|1084487|+UIApplication.sharedApplication.keyWindow.windowLevel+=+UIWindowLevelStatusBar;|code-block|syntax|javascript|1084488|以显示状态栏|1084489|+UIApplication.sharedApplication.keyWindow.windowLevel+=+UIWindowLevelNormal;|1084490|还添加Key+(基于视图控制器的状态栏外观)和布尔值NO。|1084491|​|1084492|📷|atomic|1084493|1084494|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/3d6509077dc5f754c02038d7d024be50.png|imageAlt^0|K|B|0|0|4|0|0|6|0|0|0|6|0|0|3|3|A|B|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1E|8|@$9|1F|A|1G|B|I]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1H|8|@$9|1I|A|1J|B|I]]|D|@]|E|$]]|$1|L|3|M|5|N|7|1K|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|1L|8|@$9|1M|A|1N|B|I]]|D|@]|E|$]]|$1|S|3|T|5|N|7|1O|8|@]|D|@]|E|$O|P]]|$1|U|3|V|5|6|7|1P|8|@$9|1Q|A|1R|B|C]|$9|1S|A|1T|B|I]]|D|@]|E|$]]|$1|W|3|X|5|6|7|1U|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|10|7|1V|8|@]|D|@$9|1W|A|1X|1|1Y]]|E|$]]|$1|11|3|X|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|12|3|-4|5|6|7|20|8|@]|D|@]|E|$]]]|13|$14|$5|15|16|17|E|$18|19|1A|-4]]]]

An easy approach would be to set the <code>windowLevel</code> of the Application to be either normal or statusBar based on your needs, so to start 

<blockquote>
 Objective-C
</blockquote>

To Hide the Status Bar

<pre><code> UIApplication.sharedApplication.keyWindow.windowLevel = UIWindowLevelStatusBar;
</code></pre>

To Show the Status Bar

<pre><code> UIApplication.sharedApplication.keyWindow.windowLevel = UIWindowLevelNormal;
</code></pre>

Also add the <code>Key</code> (View controller-based status bar appearance) with boolean value NO.

<a href="https://i.stack.imgur.com/dKpf7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dKpf7.png" alt="enter image description here"></a>

How do you hide the status bar in ios 9?

This is now deprecated:

<pre><code> [UIApplication sharedApplication] setStatusBarHidden:YES];
</code></pre>

Hide the status bar 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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如何在ios 9中隐藏状态栏？现在已不建议这样做： [UIApplication sharedApplication] setStatusBarHidden:YES];

问隐藏ios 9中的状态栏
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