blocks|key|92758|text|Some+people已经成功地使用动画YES调用了setNavigationBarHidden方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|92759|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/21652698/427083^0|K|3|Q|M|0|B|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

<a href="https://stackoverflow.com/a/21652698/427083">Some people</a> have had success by calling the <code>setNavigationBarHidden</code> method with animated <code>YES</code> instead.

blocks|key|4598941|text|一种有效的方法是将UINavigationController的interactivePopGestureRecognizer委托设置为nil：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4598942|[self.navigationController.interactivePopGestureRecognizer+setDelegate:nil];|code-block|syntax|javascript|4598943|但在某些情况下，它可能会产生奇怪的效果。|4598944|entityMap^0|9|M|W|V|1W|3|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

A hack that is working is to set the <code>interactivePopGestureRecognizer</code>'s delegate of the <code>UINavigationController</code> to <code>nil</code> like this:

<pre><code>[self.navigationController.interactivePopGestureRecognizer setDelegate:nil];
</code></pre>

But in some situations it could create strange effects.

blocks|key|92891|text|以下是如何在用户滑出ViewController时禁用去手势识别器。您可以将其粘贴到viewWillAppear()或ViewDidLoad()方法上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|92892|if+([self.navigationController+respondsToSelector:@selector(interactivePopGestureRecognizer)])+{
++++self.navigationController.interactivePopGestureRecognizer.enabled+=+NO;
}|code-block|syntax|javascript|92893|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|$]]

Here is how to disable de gesture recognizer when user slides out of the ViewController. You can paste it on your viewWillAppear() or on your ViewDidLoad() methods.

<pre><code>if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
 self.navigationController.interactivePopGestureRecognizer.enabled = NO;
}
</code></pre>

blocks|key|92939|text|在我的例子中，为了防止奇怪的效果|type|unstyled|depth|inlineStyleRanges|entityRanges|data|92940|根视图控制器|92941|override+func+viewDidLoad()+{
++++super.viewDidLoad()

++++//+Enable+swipe+back+when+no+navigation+bar
++++navigationController?.interactivePopGestureRecognizer?.delegate+=+self
}

//+UIGestureRecognizerDelegate
func+gestureRecognizerShouldBegin(_+gestureRecognizer:+UIGestureRecognizer)+->+Bool+{
++++if+let+navVc+=+navigationController+{
++++++return+navVc.viewControllers.count+>+1
++++}
++++return+false
}|code-block|syntax|javascript|92942|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|$]]

In my case, to prevent strange effects
Root view controller
<pre class="lang-swift prettyprint-override"><code>override func viewDidLoad() {
 super.viewDidLoad()

 // Enable swipe back when no navigation bar
 navigationController?.interactivePopGestureRecognizer?.delegate = self
}

// UIGestureRecognizerDelegate
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -&gt; Bool {
 if let navVc = navigationController {
 return navVc.viewControllers.count &gt; 1
 }
 return false
}
</code></pre>

blocks|key|92953|text|您可以按如下方式创建UINavigationController的子类：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|92954|@interface+CustomNavigationController+:+UINavigationController<UIGestureRecognizerDelegate>

@end|code-block|syntax|javascript|92955|实施：|92956|@implementation+CustomNavigationController

-+(void)setNavigationBarHidden:(BOOL)hidden+animated:(BOOL)animated+{
++++[super+setNavigationBarHidden:hidden+animated:animated];
++++self.interactivePopGestureRecognizer.delegate+=+self;
}

-+(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer+*)gestureRecognizer+{
++++if+(self.viewControllers.count+>+1)+{
++++++++return+YES;
++++}
++++return+NO;
}

@end|92957|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|$]]

You can subclass UINavigationController as following:

<pre><code>@interface CustomNavigationController : UINavigationController&lt;UIGestureRecognizerDelegate&gt;

@end
</code></pre>

Implementation:

<pre><code>@implementation CustomNavigationController

- (void)setNavigationBarHidden:(BOOL)hidden animated:(BOOL)animated {
 [super setNavigationBarHidden:hidden animated:animated];
 self.interactivePopGestureRecognizer.delegate = self;
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
 if (self.viewControllers.count &gt; 1) {
 return YES;
 }
 return NO;
}

@end
</code></pre>

blocks|key|92993|text|Xamarin回答：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|92994|在视图控制器的类定义中实现IUIGestureRecognizerDelegate接口：|offset|length|style|CODE|92995|public+partial+class+myViewController+:+UIViewController,+IUIGestureRecognizerDelegate|code-block|syntax|javascript|92996|在您的ViewController中添加以下方法：|92997|[Export("gestureRecognizerShouldBegin:")]
public+bool+ShouldBegin(UIGestureRecognizer+recognizer)+{
++if+(recognizer+is+UIScreenEdgePanGestureRecognizer+&&+
++++++NavigationController.ViewControllers.Length+==+1)+{
++++return+false;
++}
++return+true;
}|92998|在视图控制器的ViewDidLoad()中，添加以下行：|92999|NavigationController.InteractivePopGestureRecognizer.Delegate+=+this;|93000|entityMap^0|0|D|S|0|0|0|0|7|D|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|S|3|T|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

<h1>Xamarin Answer:</h1>
Implement the <code>IUIGestureRecognizerDelegate</code> Interface in your ViewController's Class definition:
<pre><code>public partial class myViewController : UIViewController, IUIGestureRecognizerDelegate
</code></pre>
In your ViewController add the following method:
<pre><code>[Export(&quot;gestureRecognizerShouldBegin:&quot;)]
public bool ShouldBegin(UIGestureRecognizer recognizer) {
 if (recognizer is UIScreenEdgePanGestureRecognizer &amp;&amp; 
 NavigationController.ViewControllers.Length == 1) {
 return false;
 }
 return true;
}
</code></pre>
In your ViewController's <code>ViewDidLoad()</code> add the following line :
<pre><code>NavigationController.InteractivePopGestureRecognizer.Delegate = this;
</code></pre>

blocks|key|93032|text|您可以使用Proxy+Delegate完成此操作。在构建导航控制器时，获取现有的代理。并将其传递给代理。然后使用forwardingTargetForSelector:将除gestureRecognizer:shouldReceiveTouch:之外的所有委托方法传递给现有委托|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|93033|设置：|93034|let+vc+=+UIViewController(nibName:+nil,+bundle:+nil)
let+navVC+=+UINavigationController(rootViewController:+vc)
let+bridgingDelegate+=+ProxyDelegate()
bridgingDelegate.existingDelegate+=+navVC.interactivePopGestureRecognizer?.delegate
navVC.interactivePopGestureRecognizer?.delegate+=+bridgingDelegate|code-block|syntax|javascript|93035|代理委派：|93036|class+ProxyDelegate:+NSObject,+UIGestureRecognizerDelegate+{
++++var+existingDelegate:+UIGestureRecognizerDelegate?+=+nil

++++override+func+forwardingTargetForSelector(aSelector:+Selector)+->+AnyObject?+{
++++++++return+existingDelegate
++++}

++++func+gestureRecognizer(gestureRecognizer:+UIGestureRecognizer,+shouldReceiveTouch+touch:+UITouch)+->+Bool+{
++++++++return+true
++++}++
}|93037|entityMap^0|1K|S|2E|11|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

You can do it with a Proxy Delegate. When you are building the navigation controller, grab the existing delegate. And pass it into the proxy. Then pass all delegate methods to the existing delegate except <code>gestureRecognizer:shouldReceiveTouch:</code> using <code>forwardingTargetForSelector:</code>

Setup:

<pre><code>let vc = UIViewController(nibName: nil, bundle: nil)
let navVC = UINavigationController(rootViewController: vc)
let bridgingDelegate = ProxyDelegate()
bridgingDelegate.existingDelegate = navVC.interactivePopGestureRecognizer?.delegate
navVC.interactivePopGestureRecognizer?.delegate = bridgingDelegate
</code></pre>

Proxy Delegate:

<pre><code>class ProxyDelegate: NSObject, UIGestureRecognizerDelegate {
 var existingDelegate: UIGestureRecognizerDelegate? = nil

 override func forwardingTargetForSelector(aSelector: Selector) -&gt; AnyObject? {
 return existingDelegate
 }

 func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -&gt; Bool {
 return true
 } 
}
</code></pre>

blocks|key|4599198|text|我试过了，它工作得很好：How+to+hide+Navigation+Bar+without+losing+slide-back+ability|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4599199|其思想是在.h中实现"UIGestureRecognizerDelegate“，并将其添加到.m文件中。|4599200|-+(void)viewWillAppear:(BOOL)animated+{
//+hide+nav+bar
[[self+navigationController]+setNavigationBarHidden:YES+animated:YES];

//+enable+slide-back
if+([self.navigationController+respondsToSelector:@selector(interactivePopGestureRecognizer)])+{
++++self.navigationController.interactivePopGestureRecognizer.enabled+=+YES;
++++self.navigationController.interactivePopGestureRecognizer.delegate+=+self;
++}
}

-+(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer+*)gestureRecognizer+{
+++return+YES;++
}|code-block|syntax|javascript|4599201|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/26332216/how-to-hide-navigation-bar-without-losing-slide-back-ability^0|C|1O|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I've tried this and it's working perfectly :
<a href="https://stackoverflow.com/questions/26332216/how-to-hide-navigation-bar-without-losing-slide-back-ability">How to hide Navigation Bar without losing slide-back ability</a>

The idea is to implement "UIGestureRecognizerDelegate" in your .h
and add this to your .m file.

<pre><code>- (void)viewWillAppear:(BOOL)animated {
// hide nav bar
[[self navigationController] setNavigationBarHidden:YES animated:YES];

// enable slide-back
if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
 self.navigationController.interactivePopGestureRecognizer.enabled = YES;
 self.navigationController.interactivePopGestureRecognizer.delegate = self;
 }
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
 return YES; 
}
</code></pre>

blocks|key|4599255|text|在没有导航栏的视图控制器中，我使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4599256|open+override+func+viewWillAppear(_+animated:+Bool)+{
++super.viewWillAppear(animated)

++CATransaction.begin()
++UIView.animate(withDuration:+0.25,+animations:+{+[weak+self]+in
++++self?.navigationController?.navigationBar.alpha+=+0.01
++})
++CATransaction.commit()
}

open+override+func+viewWillDisappear(_+animated:+Bool)+{
++super.viewWillDisappear(animated)
++CATransaction.begin()
++UIView.animate(withDuration:+0.25,+animations:+{+[weak+self]+in
++++self?.navigationController?.navigationBar.alpha+=+1.0
++})
++CATransaction.commit()
}|code-block|syntax|javascript|4599257|在交互式关闭的过程中，后退按钮会闪闪发光，这就是我隐藏它的原因。|4599258|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|$]]

In my view controller without navigationbar I use 

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

 CATransaction.begin()
 UIView.animate(withDuration: 0.25, animations: { [weak self] in
 self?.navigationController?.navigationBar.alpha = 0.01
 })
 CATransaction.commit()
}

open override func viewWillDisappear(_ animated: Bool) {
 super.viewWillDisappear(animated)
 CATransaction.begin()
 UIView.animate(withDuration: 0.25, animations: { [weak self] in
 self?.navigationController?.navigationBar.alpha = 1.0
 })
 CATransaction.commit()
}
</code></pre>

During the interactive dismissal the back button will shine through though, which is why I hid it.

blocks|key|93187|text|看起来@ChrisVasseli提供的解决方案是最好的。我想在Objective-C中提供同样的解决方案，因为问题是关于Objective-C的(参见标签)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|93188|@interface+InteractivePopGestureDelegate+:+NSObject+<UIGestureRecognizerDelegate>

@property+(nonatomic,+weak)+UINavigationController+*navigationController;
@property+(nonatomic,+weak)+id<UIGestureRecognizerDelegate>+originalDelegate;

@end

@implementation+InteractivePopGestureDelegate

-+(BOOL)gestureRecognizer:(UIGestureRecognizer+*)gestureRecognizer+shouldReceiveTouch:(UITouch+*)touch
{
++++if+(self.navigationController.navigationBarHidden+&&+self.navigationController.viewControllers.count+>+1)+{
++++++++return+YES;
++++}+else+{
++++++++return+[self.originalDelegate+gestureRecognizer:gestureRecognizer+shouldReceiveTouch:touch];
++++}
}

-+(BOOL)respondsToSelector:(SEL)aSelector
{
++++if+(aSelector+==+@selector(gestureRecognizer:shouldReceiveTouch:))+{
++++++++return+YES;
++++}+else+{
++++++++return+[self.originalDelegate+respondsToSelector:aSelector];
++++}
}

-+(id)forwardingTargetForSelector:(SEL)aSelector
{
++++return+self.originalDelegate;
}

@end

@interface+NavigationController+()

@property+(nonatomic)+InteractivePopGestureDelegate+*interactivePopGestureDelegate;

@end

@implementation+NavigationController

-+(void)viewDidLoad
{
++++[super+viewDidLoad];

++++self.interactivePopGestureDelegate+=+[InteractivePopGestureDelegate+new];
++++self.interactivePopGestureDelegate.navigationController+=+self;
++++self.interactivePopGestureDelegate.originalDelegate+=+self.interactivePopGestureRecognizer.delegate;
++++self.interactivePopGestureRecognizer.delegate+=+self.interactivePopGestureDelegate;
}

@end|code-block|syntax|javascript|93189|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|$]]

Looks like solution provided by @ChrisVasseli is the best. I'd like to provide same solution in Objective-C because question is about Objective-C (see tags)

<pre><code>@interface InteractivePopGestureDelegate : NSObject &lt;UIGestureRecognizerDelegate&gt;

@property (nonatomic, weak) UINavigationController *navigationController;
@property (nonatomic, weak) id&lt;UIGestureRecognizerDelegate&gt; originalDelegate;

@end

@implementation InteractivePopGestureDelegate

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
 if (self.navigationController.navigationBarHidden &amp;&amp; self.navigationController.viewControllers.count &gt; 1) {
 return YES;
 } else {
 return [self.originalDelegate gestureRecognizer:gestureRecognizer shouldReceiveTouch:touch];
 }
}

- (BOOL)respondsToSelector:(SEL)aSelector
{
 if (aSelector == @selector(gestureRecognizer:shouldReceiveTouch:)) {
 return YES;
 } else {
 return [self.originalDelegate respondsToSelector:aSelector];
 }
}

- (id)forwardingTargetForSelector:(SEL)aSelector
{
 return self.originalDelegate;
}

@end

@interface NavigationController ()

@property (nonatomic) InteractivePopGestureDelegate *interactivePopGestureDelegate;

@end

@implementation NavigationController

- (void)viewDidLoad
{
 [super viewDidLoad];

 self.interactivePopGestureDelegate = [InteractivePopGestureDelegate new];
 self.interactivePopGestureDelegate.navigationController = self;
 self.interactivePopGestureDelegate.originalDelegate = self.interactivePopGestureRecognizer.delegate;
 self.interactivePopGestureRecognizer.delegate = self.interactivePopGestureDelegate;
}

@end
</code></pre>

blocks|key|93265|text|在Hunter+Maximillion+Monk's+answer的基础上，我为UINavigationController创建了一个子类，然后在我的故事板中为我的UINavigationController设置了自定义类。这两个类的最终代码如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|93266|InteractivePopRecognizer：|93267|class+InteractivePopRecognizer:+NSObject+{

++++//+MARK:+-+Properties

++++fileprivate+weak+var+navigationController:+UINavigationController?

++++//+MARK:+-+Init

++++init(controller:+UINavigationController)+{
++++++++self.navigationController+=+controller

++++++++super.init()

++++++++self.navigationController?.interactivePopGestureRecognizer?.delegate+=+self
++++}
}

extension+InteractivePopRecognizer:+UIGestureRecognizerDelegate+{
++++func+gestureRecognizerShouldBegin(_+gestureRecognizer:+UIGestureRecognizer)+->+Bool+{
++++++++return+(navigationController?.viewControllers.count+??+0)+>+1
++++}

++++//+This+is+necessary+because+without+it,+subviews+of+your+top+controller+can+cancel+out+your+gesture+recognizer+on+the+edge.
++++func+gestureRecognizer(_+gestureRecognizer:+UIGestureRecognizer,+shouldRecognizeSimultaneouslyWith+otherGestureRecognizer:+UIGestureRecognizer)+->+Bool+{
++++++++return+true
++++}
}|code-block|syntax|javascript|93268|HiddenNavBarNavigationController：|93269|class+HiddenNavBarNavigationController:+UINavigationController+{

++++//+MARK:+-+Properties

++++private+var+popRecognizer:+InteractivePopRecognizer?

++++//+MARK:+-+Lifecycle

++++override+func+viewDidLoad()+{
++++++++super.viewDidLoad()
++++++++setupPopRecognizer()
++++}

++++//+MARK:+-+Setup

++++private+func+setupPopRecognizer()+{
++++++++popRecognizer+=+InteractivePopRecognizer(controller:+self)
++++}
}|93270|故事板：|93271|​|93272|📷|atomic|93273|93274|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/41248703/4343618|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/22b3d3cab07fd67c839893c422dfd19c.png|imageAlt^0|1|W|0|0|0|0|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|E|5|6|7|1E|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1F|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1G|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|1H|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|1I|8|@]|9|@]|C|$]]|$1|Q|3|R|5|6|7|1J|8|@]|9|@]|C|$]]|$1|S|3|T|5|U|7|1K|8|@]|9|@$A|1L|B|1M|1|1N]]|C|$]]|$1|V|3|R|5|6|7|1O|8|@]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]|14|$5|15|10|16|C|$17|18|19|-4]]]]

Building off of <a href="https://stackoverflow.com/a/41248703/4343618">Hunter Maximillion Monk's answer</a>, I made a subclass for UINavigationController and then set the custom class for my UINavigationController in my storyboard. Final code for the two classes looks like this:

InteractivePopRecognizer:

<pre><code>class InteractivePopRecognizer: NSObject {

 // MARK: - Properties

 fileprivate weak var navigationController: UINavigationController?

 // MARK: - Init

 init(controller: UINavigationController) {
 self.navigationController = controller

 super.init()

 self.navigationController?.interactivePopGestureRecognizer?.delegate = self
 }
}

extension InteractivePopRecognizer: UIGestureRecognizerDelegate {
 func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -&gt; Bool {
 return (navigationController?.viewControllers.count ?? 0) &gt; 1
 }

 // This is necessary because without it, subviews of your top controller can cancel out your gesture recognizer on the edge.
 func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -&gt; Bool {
 return true
 }
}
</code></pre>

HiddenNavBarNavigationController:

<pre><code>class HiddenNavBarNavigationController: UINavigationController {

 // MARK: - Properties

 private var popRecognizer: InteractivePopRecognizer?

 // MARK: - Lifecycle

 override func viewDidLoad() {
 super.viewDidLoad()
 setupPopRecognizer()
 }

 // MARK: - Setup

 private func setupPopRecognizer() {
 popRecognizer = InteractivePopRecognizer(controller: self)
 }
}
</code></pre>

Storyboard:

<img src="https://i.imgur.com/29u3Bwm.png" alt="Storyboard nav controller custom class">

blocks|key|93307|text|我的解决方案是直接扩展UINavigationController类：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|93308|import+UIKit

extension+UINavigationController:+UIGestureRecognizerDelegate+{

++++override+open+func+viewDidAppear(_+animated:+Bool)+{
++++++++super.viewDidAppear(animated)

++++++++self.interactivePopGestureRecognizer?.delegate+=+self
++++}

++++public+func+gestureRecognizerShouldBegin(_+gestureRecognizer:+UIGestureRecognizer)+->+Bool+{
++++++++return+self.viewControllers.count+>+1
++++}

}|code-block|syntax|javascript|93309|这样，所有导航控制器都可以通过滑动来解除。|93310|entityMap^0|B|M|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

My solution is to directly extend the <code>UINavigationController</code> class :

<pre><code>import UIKit

extension UINavigationController: UIGestureRecognizerDelegate {

 override open func viewDidAppear(_ animated: Bool) {
 super.viewDidAppear(animated)

 self.interactivePopGestureRecognizer?.delegate = self
 }

 public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -&gt; Bool {
 return self.viewControllers.count &gt; 1
 }

}
</code></pre>

This way, all navigation controllers will be dismissable by sliding.

blocks|key|93354|text|有一个非常简单的解决方案，我试过了，效果很好，这是在Xamarin.iOS中，但也可以应用于本机：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|93355|++++public+override+void+ViewWillAppear(bool+animated)
++++{
++++++++base.ViewWillAppear(animated);
++++++++this.NavigationController.SetNavigationBarHidden(true,+true);
++++}

++++public+override+void+ViewDidAppear(bool+animated)
++++{
++++++++base.ViewDidAppear(animated);
++++++++this.NavigationController.SetNavigationBarHidden(false,+false);
++++++++this.NavigationController.NavigationBar.Hidden+=+true;
++++}

++++public+override+void+ViewWillDisappear(bool+animated)
++++{
++++++++base.ViewWillDisappear(animated);
++++++++this.NavigationController.SetNavigationBarHidden(true,+false);
++++}|code-block|syntax|javascript|93356|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|$]]

There is a really simple solution that I tried and works perfectly, this is in Xamarin.iOS but can be applied to native too:

<pre><code> public override void ViewWillAppear(bool animated)
 {
 base.ViewWillAppear(animated);
 this.NavigationController.SetNavigationBarHidden(true, true);
 }

 public override void ViewDidAppear(bool animated)
 {
 base.ViewDidAppear(animated);
 this.NavigationController.SetNavigationBarHidden(false, false);
 this.NavigationController.NavigationBar.Hidden = true;
 }

 public override void ViewWillDisappear(bool animated)
 {
 base.ViewWillDisappear(animated);
 this.NavigationController.SetNavigationBarHidden(true, false);
 }
</code></pre>

blocks|key|4599518|text|以下是我的解决方案:我更改了导航栏上的alpha，但导航栏并未隐藏。我所有的视图控制器都是我的BaseViewController的子类，在那里我有：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4599519|++++override+func+viewDidAppear(_+animated:+Bool)+{
++++super.viewDidAppear(animated)
++++navigationController?.navigationBar.alpha+=+0.0
}|code-block|syntax|javascript|4599520|您还可以子类化UINavigationController并将该方法放在那里。|4599521|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|$]]

Here is my solution:
I am changing alpha on the navigation bar, but the navigation bar is not hidden.
All my view controllers are a subclass of my BaseViewController, and there I have:

<pre><code> override func viewDidAppear(_ animated: Bool) {
 super.viewDidAppear(animated)
 navigationController?.navigationBar.alpha = 0.0
}
</code></pre>

You could also subclass UINavigationController and put that method there.

blocks|key|93428|text|简单，没有副作用的答案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|93429|虽然这里的大多数答案都很好，但它们似乎有意想不到的副作用(应用程序中断)或冗长。|93430|我能想到的最简单但功能强大的解决方案是：|93431|在隐藏navigationBar的ViewController中，|93432|class+MyNoNavBarViewController:+UIViewController+{
++++
++++//+needed+for+reference+when+leaving+this+view+controller
++++var+initialInteractivePopGestureRecognizerDelegate:+UIGestureRecognizerDelegate?
++++
++++override+func+viewDidLoad()+{
++++++++super.viewDidLoad()
++++++++
++++++++//+we+will+need+a+reference+to+the+initial+delegate+so+that+when+we+push+or+pop..+
++++++++//+..this+view+controller+we+can+appropriately+assign+back+the+original+delegate
++++++++initialInteractivePopGestureRecognizerDelegate+=+self.navigationController?.interactivePopGestureRecognizer?.delegate
++++}

++++override+func+viewWillAppear(_+animated:+Bool)+{
++++++++super.viewWillAppear(true)

++++++++//+we+must+set+the+delegate+to+nil+whether+we+are+popping+or+pushing+to..
++++++++//+..this+view+controller,+thus+we+set+it+in+viewWillAppear()
++++++++self.navigationController?.interactivePopGestureRecognizer?.delegate+=+nil
++++}

++++override+func+viewWillDisappear(_+animated:+Bool)+{
++++++++super.viewWillDisappear(true)

++++++++//+and+every+time+we+leave+this+view+controller+we+must+set+the+delegate+back..
++++++++//+..to+what+it+was+originally
++++++++self.navigationController?.interactivePopGestureRecognizer?.delegate+=+initialInteractivePopGestureRecognizerDelegate
++++}
}|code-block|syntax|javascript|93433|其他答案建议仅将委托设置为nil。向后滑动到导航堆栈上的初始视图控制器会导致禁用所有手势。可能是对UIKit/UIGesture开发人员的某种疏忽。|93434|同样，我在这里实现的一些答案导致了非标准的苹果导航行为(具体地说，允许向上或向下滚动，同时向后滑动)。这些答案似乎也有点冗长，在某些情况下是不完整的。|93435|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]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

<h1>Simple, no side-effect Answer</h1>
While most answers here are good, they seemingly have unintended side-effects (app breaking) or are verbose.
The most simple yet functional solution I could come up with was the following:
In the ViewController that you are hiding the navigationBar,
<pre><code>class MyNoNavBarViewController: UIViewController {
 
 // needed for reference when leaving this view controller
 var initialInteractivePopGestureRecognizerDelegate: UIGestureRecognizerDelegate?
 
 override func viewDidLoad() {
 super.viewDidLoad()
 
 // we will need a reference to the initial delegate so that when we push or pop.. 
 // ..this view controller we can appropriately assign back the original delegate
 initialInteractivePopGestureRecognizerDelegate = self.navigationController?.interactivePopGestureRecognizer?.delegate
 }

 override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(true)

 // we must set the delegate to nil whether we are popping or pushing to..
 // ..this view controller, thus we set it in viewWillAppear()
 self.navigationController?.interactivePopGestureRecognizer?.delegate = nil
 }

 override func viewWillDisappear(_ animated: Bool) {
 super.viewWillDisappear(true)

 // and every time we leave this view controller we must set the delegate back..
 // ..to what it was originally
 self.navigationController?.interactivePopGestureRecognizer?.delegate = initialInteractivePopGestureRecognizerDelegate
 }
}
</code></pre>
Other answers have suggested merely setting the delegate to nil. Swiping backwards to the initial view controller on the navigation stack results in all gestures to be disabled. Some sort of oversight, perhaps, of the UIKit/UIGesture devs.
As well, some answers here that I have implemented resulted in non-standard apple navigation behaviour (specifically, allowing for the ability to scroll up or down while also swiping backwards). These answers also seem a bit verbose and in some cases incomplete.

blocks|key|4599652|text|猎人和尚的答案真的很棒，但不幸的是，在iOS+13.3.1中，它不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4599653|我将解释另一种隐藏UINavigationBar而不丢失swipe+to+back+gesture的方法。我已经在iOS+13.3.1和12.4.3上测试过了，它可以工作。|offset|length|style|CODE|4599654|您需要创建UINavigationController的自定义类，并在Storyboard中为UINavigationController设置该类|4599655|​|4599656|📷|atomic|4599657|4599658|请勿在Storyboard上隐藏NavigationBar|4599659|4599660|4599661|4599662|Storyboard上的示例|4599663|4599664|4599665|4599666|最后，将这个：navigationBar.isHidden+=+true放在CustomNavigationController类的viewDidLoad中。|4599667|请确保不要使用此方法setNavigationBarHidden(true,+animated:+true)来隐藏NavigationBar。|4599668|import+UIKit

class+CustomNavigationController:+UINavigationController+{

++++override+func+viewDidLoad()+{
++++++++super.viewDidLoad()

++++++++navigationBar.isHidden+=+true
++++}
}|code-block|syntax|javascript|4599669|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/a6622f8889af28b284790bb2c37ea1eb.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/64d9e4d0f8f12c185ae5b2b06087b49c.png|2|https://ask.qcloudimg.com/http-save/yehe-900000/e4c5b6c5102d3f432c7313510e7912ac.png^0|0|9|F|S|L|0|5|M|Z|A|1B|M|0|0|0|1|0|0|0|3|A|G|D|0|0|0|1|1|0|0|0|A|0|0|0|1|2|0|0|7|T|12|Q|1U|B|0|A|18|1L|D|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1M|8|@$D|1N|E|1O|F|G]|$D|1P|E|1Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1R|8|@$D|1S|E|1T|F|G]|$D|1U|E|1V|F|G]|$D|1W|E|1X|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1Z|8|@]|9|@$D|20|E|21|1|22]]|A|$]]|$1|O|3|K|5|6|7|23|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|24|8|@$D|25|E|26|F|G]|$D|27|E|28|F|G]]|9|@]|A|$]]|$1|R|3|K|5|6|7|29|8|@]|9|@]|A|$]]|$1|S|3|M|5|N|7|2A|8|@]|9|@$D|2B|E|2C|1|2D]]|A|$]]|$1|T|3|K|5|6|7|2E|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|2F|8|@$D|2G|E|2H|F|G]]|9|@]|A|$]]|$1|W|3|K|5|6|7|2I|8|@]|9|@]|A|$]]|$1|X|3|M|5|N|7|2J|8|@]|9|@$D|2K|E|2L|1|2M]]|A|$]]|$1|Y|3|K|5|6|7|2N|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|2O|8|@$D|2P|E|2Q|F|G]|$D|2R|E|2S|F|G]|$D|2T|E|2U|F|G]]|9|@]|A|$]]|$1|11|3|12|5|6|7|2V|8|@$D|2W|E|2X|F|G]|$D|2Y|E|2Z|F|G]]|9|@]|A|$]]|$1|13|3|14|5|15|7|30|8|@]|9|@]|A|$16|17]]|$1|18|3|-4|5|6|7|31|8|@]|9|@]|A|$]]]|19|$1A|$5|1B|1C|1D|A|$1E|1F|1G|-4]]|1H|$5|1B|1C|1D|A|$1E|1I|1G|-4]]|1J|$5|1B|1C|1D|A|$1E|1K|1G|-4]]]]

The answer of Hunter Monk is really awesome, but unfortunately in iOS 13.3.1, it does not work.

I will explain another way to hide <code>UINavigationBar</code> and not lose <code>swipe to back gesture</code>.
I have tested on iOS 13.3.1 and 12.4.3 and it works.

You need to create a custom class of <code>UINavigationController</code> and set that class for <code>UINavigationController</code> in <code>Storyboard</code>

<a href="https://i.stack.imgur.com/wnCTr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/wnCTr.png" alt="Set custom class to &lt;code&gt;UINavigationController&lt;/code&gt;"></a>

Do NOT hide the <code>NavigationBar</code> on the <code>Storyboard</code>

<a href="https://i.stack.imgur.com/hKddT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/hKddT.png" alt="&lt;code&gt;UINavigationController&lt;/code&gt; Attributes inspector:"></a>

Example on <code>Storyboard</code>:

<a href="https://i.stack.imgur.com/I9S9x.png" rel="noreferrer"><img src="https://i.stack.imgur.com/I9S9x.png" alt="Storyboard:"></a>

And finally, put this: <code>navigationBar.isHidden = true</code> in <code>viewDidLoad</code> of <code>CustomNavigationController</code> class.

Make sure, do NOT use this method <code>setNavigationBarHidden(true, animated: true)</code> for hiding the <code>NavigationBar</code>.

<pre><code>import UIKit

class CustomNavigationController: UINavigationController {

 override func viewDidLoad() {
 super.viewDidLoad()

 navigationBar.isHidden = true
 }
}
</code></pre>

I love the swipe pack thats inherited from embedding your views in a <code>UINavigationController</code>. Unfortunately i cannot seem to find a way to hide the <code>NavigationBar</code> but still have the touch pan swipe back <code>gesture</code>. I can write custom gestures but I prefer not to and to rely on the <code>UINavigationController</code> back swipe <code>gesture</code> instead.

if I uncheck it in the storyboard, the back swipe doesn't work

<img src="https://i.stack.imgur.com/4n4Dy.png" alt="enter image description here">

alternatively if I programmatically hide it, the same scenario.

<pre class="lang-c prettyprint-override"><code>- (void)viewDidLoad
{
 [super viewDidLoad];
 [self.navigationController setNavigationBarHidden:YES animated:NO]; // and animated:YES
}
</code></pre>

Is there no way to hide the top <code>NavigationBar</code> and still have the swipe?

No Swipe Back when hiding Navigation Bar in UINavigationController

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我喜欢它的swipe包，它继承于在UINavigationController中嵌入你的视图。不幸的是，我似乎找不到一种方法来隐藏NavigationBar，但仍然可以让触摸屏向后刷回gesture。我可以编写自定义手势，但我不喜欢这样做，而是依赖于UINavigationController back swipe g...

问在UINavigationController中隐藏导航栏时无法向后滑动
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