blocks|key|4600818|text|好的，一位室友看了一眼就明白了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4600819|+func+addCategory()+{

++++var+popoverContent+=+self.storyboard?.instantiateViewControllerWithIdentifier("NewCategory")+as+UIViewController
++++var+nav+=+UINavigationController(rootViewController:+popoverContent)
++++nav.modalPresentationStyle+=+UIModalPresentationStyle.Popover
++++var+popover+=+nav.popoverPresentationController
++++popoverContent.preferredContentSize+=+CGSizeMake(500,600)
++++popover.delegate+=+self
++++popover.sourceView+=+self.view
++++popover.sourceRect+=+CGRectMake(100,100,0,0)

++++self.presentViewController(nav,+animated:+true,+completion:+nil)

}|code-block|syntax|javascript|4600820|这就是办法。|4600821|您不再与popover本身通信，而是通过调用属性preferredContentSize与它内部的视图控制器通信来设置内容大小|offset|length|style|CODE|4600822|entityMap^0|0|0|0|O|K|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|$]]

Okay, A housemate took a look at it and figured it out:

<pre><code> func addCategory() {

 var popoverContent = self.storyboard?.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController
 var nav = UINavigationController(rootViewController: popoverContent)
 nav.modalPresentationStyle = UIModalPresentationStyle.Popover
 var popover = nav.popoverPresentationController
 popoverContent.preferredContentSize = CGSizeMake(500,600)
 popover.delegate = self
 popover.sourceView = self.view
 popover.sourceRect = CGRectMake(100,100,0,0)

 self.presentViewController(nav, animated: true, completion: nil)

}
</code></pre>

That's the way. 

You don't talk to the popover itself anymore, you talk to the view controller inside of it to set the content size, by calling the property <code>preferredContentSize</code>

blocks|key|94743|text|这在iOS8+Day-by-Day+blog上得到了最好的解释|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|94744|简而言之，一旦将UIViewController的modalPresentationStyle设置为.Popover，就可以通过控制器的popoverPresentationController属性获取UIPopoverPresentationClass+(一个新的iOS8类)。|94745|entityMap|0|LINK|mutability|MUTABLE|url|http://www.shinobicontrols.com/blog/posts/2014/08/26/ios8-day-by-day-day-21-alerts-and-popovers^0|2|K|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

This is best explained on the <a href="http://www.shinobicontrols.com/blog/posts/2014/08/26/ios8-day-by-day-day-21-alerts-and-popovers">iOS8 Day-by-Day blog</a>

In short, once you've set your UIViewController's modalPresentationStyle to .Popover, you can get hold of a UIPopoverPresentationClass (a new iOS8 class) via the controller's popoverPresentationController property.

blocks|key|4600885|text|实际上，它比这简单得多。在故事板中，你应该像往常一样创建你想要用作弹出的视图控制器，并为它创建一个视图控制器类。如下所示，从要打开弹出窗口的对象中创建一个segue，在本例中是名为"Config“的UIBarButton。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4600886|​|4600887|📷|atomic|4600888|4600889|在“母视图控制器”中实现UIPopoverPresentationControllerDelegate和委托方法：|4600890|func+popoverPresentationControllerDidDismissPopover(popoverPresentationController:+UIPopoverPresentationController)+{
++++//do+som+stuff+from+the+popover
}|code-block|syntax|javascript|4600891|覆盖prepareForSeque方法，如下所示：|4600892|override+func+prepare(for+segue:+UIStoryboardSegue,+sender:+Any?)+{
+++++//segue+for+the+popover+configuration+window
++++if+segue.identifier+==+"yourSegueIdentifierForPopOver"+{
++++++++if+let+controller+=+segue.destinationViewController+as?+UIViewController+{
++++++++++++controller.popoverPresentationController!.delegate+=+self
++++++++++++controller.preferredContentSize+=+CGSize(width:+320,+height:+186)
++++++++}
++++}
}|4600893|你就完事了。您现在可以将弹出视图视为任何其他视图，即。添加字段等等！您可以通过在UIPopoverPresentationController中使用popoverPresentationController.presentedViewController方法来获取内容控制器。|4600894|此外，在iPhone上，您还必须覆盖|4600895|func+adaptivePresentationStyle(for+controller:+UIPresentationController)+->+UIModalPresentationStyle+{

++++++++return+UIModalPresentationStyle.none
++++}+|4600896|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/c9ad536285077543573d7ae0a27ffa36.png|imageAlt^0|2R|B|0|0|0|1|0|0|0|C|13|0|0|2|F|0|0|14|V|22|1H|0|0|0^^$0|@$1|2|3|4|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1E|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1F|8|@]|D|@$9|1G|A|1H|1|1I]]|E|$]]|$1|K|3|G|5|6|7|1J|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1K|8|@$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|N|3|O|5|P|7|1N|8|@]|D|@]|E|$Q|R]]|$1|S|3|T|5|6|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|U|3|V|5|P|7|1R|8|@]|D|@]|E|$Q|R]]|$1|W|3|X|5|6|7|1S|8|@$9|1T|A|1U|B|C]|$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|1X|8|@]|D|@]|E|$]]|$1|10|3|11|5|P|7|1Y|8|@]|D|@]|E|$Q|R]]|$1|12|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]]|13|$14|$5|15|16|17|E|$18|19|1A|-4]]]]

Actually it is much simpler than that. In the storyboard you should make the viewcontroller you want to use as popover and make a viewcontroller class for it as usual. Make a segue as shown below from the object you want to open the popover, in this case the <code>UIBarButton</code> named "Config".

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

In the "mother viewcontroller" implement the <code>UIPopoverPresentationControllerDelegate</code> and the delegate method:

<pre><code>func popoverPresentationControllerDidDismissPopover(popoverPresentationController: UIPopoverPresentationController) {
 //do som stuff from the popover
}
</code></pre>

Override the <code>prepareForSeque</code> method like this:

<pre><code>override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
 //segue for the popover configuration window
 if segue.identifier == "yourSegueIdentifierForPopOver" {
 if let controller = segue.destinationViewController as? UIViewController {
 controller.popoverPresentationController!.delegate = self
 controller.preferredContentSize = CGSize(width: 320, height: 186)
 }
 }
}
</code></pre>

And you're done. And you can now treat the popover view as any other view, ie. add fields and what not! And you get hold of the the content controller by using the <code>popoverPresentationController.presentedViewController</code> method in the <code>UIPopoverPresentationController</code>.

Also on an iPhone you would have to overwrite 

<pre><code>func adaptivePresentationStyle(for controller: UIPresentationController) -&gt; UIModalPresentationStyle {

 return UIModalPresentationStyle.none
 } 
</code></pre>

blocks|key|4600950|text|我做了一个Objective-C版本的Imagine+Digitals快速答案。我不认为我遗漏了任何东西，因为它似乎在初步测试下工作，如果你发现了什么让我知道，我会更新它|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4600951|-(void)+presentPopover
{
++++YourViewController*+popoverContent+=+[[YourViewController+alloc]+init];+//this+will+be+a+subclass+of+UIViewController
++++UINavigationController*+nav+=++[[UINavigationController+alloc]+initWithRootViewController:popoverContent];
++++nav.modalPresentationStyle+=+UIModalPresentationPopover;
++++UIPopoverPresentationController*+popover+=+nav.popoverPresentationController;
++++popoverContent.preferredContentSize+=+CGSizeMake(500,600);
++++popover.delegate+=+self;
++++popover.sourceRect+=+CGRectMake(100,100,0,0);+//I+actually+used+popover.barButtonItem+=+self.myBarButton;

++++[self+presentViewController:nav+animated:YES+completion:nil];
}|code-block|syntax|javascript|4600952|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|$]]

I made an Objective-C version of Imagine Digitals swift answer above. I don't think I missed anything as it seems to work under preliminary testing, if you spot something let me know, and I'll update it

<pre><code>-(void) presentPopover
{
 YourViewController* popoverContent = [[YourViewController alloc] init]; //this will be a subclass of UIViewController
 UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:popoverContent];
 nav.modalPresentationStyle = UIModalPresentationPopover;
 UIPopoverPresentationController* popover = nav.popoverPresentationController;
 popoverContent.preferredContentSize = CGSizeMake(500,600);
 popover.delegate = self;
 popover.sourceRect = CGRectMake(100,100,0,0); //I actually used popover.barButtonItem = self.myBarButton;

 [self presentViewController:nav animated:YES completion:nil];
}
</code></pre>

blocks|key|4600970|text|这里我将"Joris416“Swift代码转换为Objective-c，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4600971|-(void)+popoverstart
{
++++ViewController+*controller+=+[self.storyboard+instantiateViewControllerWithIdentifier:@"PopoverView"];
++++UINavigationController+*nav+=+[[UINavigationController+alloc]initWithRootViewController:controller];
++++nav.modalPresentationStyle+=+UIModalPresentationPopover;
++++UIPopoverPresentationController+*popover+=+nav.popoverPresentationController;
++++controller.preferredContentSize+=+CGSizeMake(300,+200);
++++popover.delegate+=+self;
++++popover.sourceView+=+self.view;
++++popover.sourceRect+=+CGRectMake(100,+100,+0,+0);
++++popover.permittedArrowDirections+=+UIPopoverArrowDirectionAny;
++++[self+presentViewController:nav+animated:YES+completion:nil];
}

-(UIModalPresentationStyle)+adaptivePresentationStyleForPresentationController:+(UIPresentationController+*+)+controller
{
++++return+UIModalPresentationNone;
}|code-block|syntax|javascript|4600972|别忘了添加|4600973|UIPopoverPresentationControllerDelegate,+UIAdaptivePresentationControllerDelegate|offset|length|style|CODE|4600974|entityMap^0|0|0|0|0|29|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|$]]

Here i Convert "Joris416" Swift Code to Objective-c,

<pre><code>-(void) popoverstart
{
 ViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"PopoverView"];
 UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:controller];
 nav.modalPresentationStyle = UIModalPresentationPopover;
 UIPopoverPresentationController *popover = nav.popoverPresentationController;
 controller.preferredContentSize = CGSizeMake(300, 200);
 popover.delegate = self;
 popover.sourceView = self.view;
 popover.sourceRect = CGRectMake(100, 100, 0, 0);
 popover.permittedArrowDirections = UIPopoverArrowDirectionAny;
 [self presentViewController:nav animated:YES completion:nil];
}

-(UIModalPresentationStyle) adaptivePresentationStyleForPresentationController: (UIPresentationController * ) controller
{
 return UIModalPresentationNone;
}
</code></pre>

Remember to ADD 
<code>UIPopoverPresentationControllerDelegate, UIAdaptivePresentationControllerDelegate</code>

blocks|key|94896|text|在iOS9中，UIPopoverController已折旧。所以可以使用下面的代码用于iOS9.x以上的Objective-C版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|94897|-+(IBAction)onclickPopover:(id)sender+{
UIStoryboard+*sb+=+[UIStoryboard+storyboardWithName:@"Main"+bundle:[NSBundle+mainBundle]];
UIViewController+*viewController+=+[sb+instantiateViewControllerWithIdentifier:@"popover"];

viewController.modalPresentationStyle+=+UIModalPresentationPopover;
viewController.popoverPresentationController.sourceView+=+self.popOverBtn;
viewController.popoverPresentationController.sourceRect+=+self.popOverBtn.bounds;
viewController.popoverPresentationController.permittedArrowDirections+=+UIPopoverArrowDirectionAny;
[self+presentViewController:viewController+animated:YES+completion:nil];+}|code-block|syntax|javascript|94898|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 iOS9 UIPopoverController is depreciated. So can use the below code for Objective-C version above iOS9.x,

<pre><code>- (IBAction)onclickPopover:(id)sender {
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
UIViewController *viewController = [sb instantiateViewControllerWithIdentifier:@"popover"];

viewController.modalPresentationStyle = UIModalPresentationPopover;
viewController.popoverPresentationController.sourceView = self.popOverBtn;
viewController.popoverPresentationController.sourceRect = self.popOverBtn.bounds;
viewController.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionAny;
[self presentViewController:viewController animated:YES completion:nil]; }
</code></pre>

blocks|key|94924|text|在视图控制器中实现UIAdaptivePresentationControllerDelegate。然后添加：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|94925|func+adaptivePresentationStyle(for+controller:+UIPresentationController,+traitCollection:+UITraitCollection)+->+UIModalPresentationStyle{
++++return+.none
}|code-block|syntax|javascript|94926|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|$]]

Implement UIAdaptivePresentationControllerDelegate in your Viewcontroller.
Then add : 

<pre><code>func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -&gt; UIModalPresentationStyle{
 return .none
}
</code></pre>

blocks|key|94960|text|我对Xcode9.1/+swift+4有两点看法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|94961|class+ViewController:+UIViewController,+UIPopoverPresentationControllerDelegate+{

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

++++++++let+when+=+DispatchTime.now()+%2B+0.5

++++++++DispatchQueue.main.asyncAfter(deadline:+when,+execute:+{+()+->+Void+in
++++++++++++//+to+test+after+05.secs...+:)
++++++++++++self.showPopover(base:+self.view)

++++++++})

}


func+showPopover(base:+UIView)+{
++++if+let+viewController+=+self.storyboard?.instantiateViewController(withIdentifier:+"popover")+as?+PopOverViewController+{

++++++++let+navController+=+UINavigationController(rootViewController:+viewController)
++++++++navController.modalPresentationStyle+=+.popover

++++++++if+let+pctrl+=+navController.popoverPresentationController+{
++++++++++++pctrl.delegate+=+self

++++++++++++pctrl.sourceView+=+base
++++++++++++pctrl.sourceRect+=+base.bounds

++++++++++++self.present(navController,+animated:+true,+completion:+nil)
++++++++}
++++}
}


@IBAction+func+onShow(sender:+UIButton){
++++self.showPopover(base:+sender)
}

func+adaptivePresentationStyle(for+controller:+UIPresentationController,+traitCollection:+UITraitCollection)+->+UIModalPresentationStyle{
++++return+.none
}|code-block|syntax|javascript|94962|并在以下方面进行实验：|94963|func+adaptivePresentationStyle...|94964|++++return+.popover|94965|或者:+return+.pageSheet....以此类推..|94966|entityMap^0|0|0|0|0|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]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

my two cents for xcode 9.1 / swift 4.

<pre><code>class ViewController: UIViewController, UIPopoverPresentationControllerDelegate {

 override func viewDidLoad(){
 super.viewDidLoad()

 let when = DispatchTime.now() + 0.5

 DispatchQueue.main.asyncAfter(deadline: when, execute: { () -&gt; Void in
 // to test after 05.secs... :)
 self.showPopover(base: self.view)

 })

}


func showPopover(base: UIView) {
 if let viewController = self.storyboard?.instantiateViewController(withIdentifier: "popover") as? PopOverViewController {

 let navController = UINavigationController(rootViewController: viewController)
 navController.modalPresentationStyle = .popover

 if let pctrl = navController.popoverPresentationController {
 pctrl.delegate = self

 pctrl.sourceView = base
 pctrl.sourceRect = base.bounds

 self.present(navController, animated: true, completion: nil)
 }
 }
}


@IBAction func onShow(sender: UIButton){
 self.showPopover(base: sender)
}

func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -&gt; UIModalPresentationStyle{
 return .none
}
</code></pre>

and experiment in:

func adaptivePresentationStyle...

<pre><code> return .popover
</code></pre>

or:
 return .pageSheet....
and so on..

blocks|key|95029|text|对于那些想要学习的人！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|95030|我为那些想要学习和使用Popover+view的人创建了一个开源项目。你可以在这里找到这个项目。https://github.com/tryWabbit/KTListPopup|offset|length|95031|​|95032|📷|atomic|95033|95034|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/tryWabbit/KTListPopup|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/c9f7450e13441766fc379b79e4e3e39f.gif|imageAlt^0|0|1C|14|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@$D|16|E|17|1|18]]|A|$]]|$1|K|3|G|5|6|7|19|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|U|P|V|A|$W|X|Y|-4]]]]

<h1>For those who wants to study!</h1>
I created an Open Source project for those who want to study and use Popover view for anypurpose. You can find the project here. <a href="https://github.com/tryWabbit/KTListPopup" rel="nofollow noreferrer">https://github.com/tryWabbit/KTListPopup</a>
<img src="https://user-images.githubusercontent.com/20557360/61028815-3d1b3480-a3d7-11e9-8293-ee6e6c18b97a.gif" alt="KTListNewResize" />

blocks|key|4601124|text|+var+popoverContent+=+(self.storyboard?.instantiateViewController(withIdentifier:+"WhatsNewViewController"))!+as+UIViewController
++++++++var+nav+=+UINavigationController(rootViewController:+popoverContent)
++++nav.modalPresentationStyle+=+UIModalPresentationStyle.popover
++++++++var+popover+=+nav.popoverPresentationController
++++++++popoverContent.preferredContentSize+=+CGSize(width:+500,+height:+100)
++++++++popover?.delegate+=+self
++++++++popover?.sourceView+=+self.view
++++++++popover?.sourceRect+=+CGRectMake(100,100,0,0)

++++self.present(nav,+animated:+true,+completion:+nil)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4601125|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> var popoverContent = (self.storyboard?.instantiateViewController(withIdentifier: &quot;WhatsNewViewController&quot;))! as UIViewController
 var nav = UINavigationController(rootViewController: popoverContent)
 nav.modalPresentationStyle = UIModalPresentationStyle.popover
 var popover = nav.popoverPresentationController
 popoverContent.preferredContentSize = CGSize(width: 500, height: 100)
 popover?.delegate = self
 popover?.sourceView = self.view
 popover?.sourceRect = CGRectMake(100,100,0,0)

 self.present(nav, animated: true, completion: nil)
</code></pre>

I'm trying to add a UIPopoverView to my Swift iOS 8 app, but I am unable to access the PopoverContentSize property, as the popover does not show in the correct shape. my code:

<pre><code>var popover: UIPopoverController? = nil 

 func addCategory() {

 var newCategory = storyboard.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController
 var nav = UINavigationController(rootViewController: newCategory)
 popover = UIPopoverController(contentViewController: nav)
 popover!.setPopoverContentSize(CGSizeMake(550, 600), animated: true)
 popover!.delegate = self
 popover!.presentPopoverFromBarButtonItem(self.navigationItem.rightBarButtonItem, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)
}
</code></pre>

output:

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

When I am doing the same thing through UIPopoverPresentationController, I still don't get it done. this is my code:

<pre><code>func addCategory() {

 var popoverContent = self.storyboard.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController
 var nav = UINavigationController(rootViewController: popoverContent)
 nav.modalPresentationStyle = UIModalPresentationStyle.Popover
 var popover = nav.popoverPresentationController as UIPopoverPresentationController
 popover.delegate = self
 popover.popoverContentSize = CGSizeMake(1000, 300)
 popover.sourceView = self.view
 popover.sourceRect = CGRectMake(100,100,0,0)

 self.presentViewController(nav, animated: true, completion: nil)

}
</code></pre>

I get the exact same output. 

How do I customize the size of my popover? Any help would be highly appreciated!

How to present popover properly in iOS 8

Objective-C

Swift

我正在尝试向我的Swift iOS 8应用程序添加UIPopoverView，但无法访问PopoverContentSize属性，因为弹出窗口的形状不正确。我的代码：var popover: UIPopoverController? = nil     func addCategory() {    var newCa...

问如何在iOS 8中正确显示弹出窗口
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问如何在iOS 8中正确显示弹出窗口
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