blocks|key|303027|text|在我遇到同样的问题后(巧合的是今天也是如此)，我解决了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|303028|编辑：由于contentSizeForViewInPopover在iOS7.0中已弃用，因此请使用preferredContentSize。|offset|length|style|BOLD|CODE|303029|下面的原始答案|303030|在您的detailViewController中添加以下内容：|303031|-+(void)viewWillAppear:(BOOL)animated+{

++++CGSize+size+=+CGSizeMake(320,+480);+//+size+of+view+in+popover
++++self.contentSizeForViewInPopover+=+size;

++++[super+viewWillAppear:animated];

}|code-block|syntax|javascript|303032|您还希望添加一些类似于原始DeviceDetailViewController的内容，以防止在点击back+NavbarItem时调整大小。|303033|entityMap^0|0|0|2|5|R|X|6|1D|K|0|3|4|0|0|V|3|K|0|0|0|1Y|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@$D|X|E|Y|F|G]|$D|Z|E|10|F|H]|$D|11|E|12|F|H]|$D|13|E|14|F|H]]|9|@]|A|$]]|$1|I|3|J|5|6|7|15|8|@$D|16|E|17|F|G]]|9|@]|A|$]]|$1|K|3|L|5|6|7|18|8|@$D|19|E|1A|F|G]|$D|1B|E|1C|F|H]]|9|@]|A|$]]|$1|M|3|N|5|O|7|1D|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|1E|8|@$D|1F|E|1G|F|G]]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|U|$]]

This fixed it for me after I had the same issue (coincidently also today):

EDIT : As <code>contentSizeForViewInPopover</code> is deprecated in <code>iOS7.0</code> so use <code>preferredContentSize</code>.

Original answer below:

In your <code>detailViewController</code> add this:

<pre><code>- (void)viewWillAppear:(BOOL)animated {

 CGSize size = CGSizeMake(320, 480); // size of view in popover
 self.contentSizeForViewInPopover = size;

 [super viewWillAppear:animated];

}
</code></pre>

You also want to add something similar to your original DeviceDetailViewController to prevent resizing when tapping the back NavbarItem.

blocks|key|3242942|text|为了响应动画中的图形毛刺：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3242943|如果创建内含UINavigationController的弹出式鼠标悬停，则UIPopoverController动画与UINavigation控制器动画冲突。它会导致动画时出现图形毛刺。要解决此问题，请在推动其他控制器或显示工具栏时将动画参数设置为false。|3242944|推送视图控制器：|3242945|[self.navigationController+pushViewController:detailViewController+animated:NO];|code-block|syntax|javascript|3242946|使工具栏可见：|3242947|[[self+navigationController]+setToolbarHidden:NO+animated:NO];+|3242948|设置动画:否将使动画在UIPopoverController中看起来正确。|3242949|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

In response to graphical glitches with animations:

The UIPopoverController animations conflict with the UINavigation controllers animations, if you create the popover with a UINavigationController inside it. It results in graphical glitches when animating. To fix the issue, set animated parameter to false when pushing other controllers, or when displaying the toolbar.

Pushing View Controllers:

<pre><code>[self.navigationController pushViewController:detailViewController animated:NO];
</code></pre>

Making the Toolbar visible: 

<pre><code>[[self navigationController] setToolbarHidden:NO animated:NO]; 
</code></pre>

Setting the animated:NO will make the animations look correct in a UIPopoverController.

blocks|key|303075|text|对borked的建议稍有不同(它为我指明了正确的方向，谢谢！)，下面是我在推送新控制器以保持其大小时所做的事情：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|303076|productViewController.contentSizeForViewInPopover+=+self.view.bounds.size;
self.contentSizeForViewInPopover+=+self.view.bounds.size;

[self.navigationController+pushViewController:productViewController+animated:YES];|code-block|syntax|javascript|303077|我喜欢这一点，因为我不必在每个视图控制器中硬编码popover值(这很好，因为我在不同的高度使用它们)。|303078|self.contentSizeForViewInPopover行是为了在用户回击时保留大小。我想你可以把这一行放在别的地方，比如viewWillAppear或者你喜欢的任何地方。|offset|length|style|CODE|303079|看起来很有效。|303080|entityMap^0|0|0|0|0|W|1T|E|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]|$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

Slight varient on borked's advice (which pointed me in the right direction, thanks for that!), here's what I do when pushing a new controller to maintain the size before pushing it:

<pre><code>productViewController.contentSizeForViewInPopover = self.view.bounds.size;
self.contentSizeForViewInPopover = self.view.bounds.size;

[self.navigationController pushViewController:productViewController animated:YES];
</code></pre>

I like this because I don't have to hardcode the popover values in every view controller (good since I use them at various heights).

The <code>self.contentSizeForViewInPopover</code> line is to preserve the size when the user hits back. I guess you could put this line somewhere else, like <code>viewWillAppear</code> or wherever you like.

Seems to work...

blocks|key|297925|text|我也遇到过类似的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|297926|我从工具栏的一个按钮上看到了一个弹出窗口。已将弹出窗口设置为特定大小。这是一个表视图。当选择表行时，将调用一个带有导航控制器的新视图控制器。|297927|当选择后退按钮时，弹出窗口变成了默认大小(我相信是320x1100)，而不是我想要的特定大小。|297928|原始代码是：|297929|++MyTableViewController+*myVC+=+[[MyTableViewController+alloc]+init];
++UINavigationController+*navController+=+[[UINavigationController+alloc]+initWithRootViewController:myVC];

++UIPopoverController+*popover+=+[[UIPopoverController+alloc]+initWithContentViewController:navController];
++popover.delegate+=+self;

++popover.popoverContentSize+=+CGSizeMake(400.0,+500.0);

++[myVC+release];
++[navController+release];
++[popover+release];|code-block|syntax|javascript|297930|我添加了一行来解决这个问题。当然，这是一种工作，因为我必须减去头部的高度。也许你们中的一个人可以用更好的方法启发我。不管怎么说，它是有效的。|297931|++MyTableViewController+*myVC+=+[[MyTableViewController+alloc]+init];

++UINavigationController+*navController+=+[[UINavigationController+alloc]+initWithRootViewController:myVC];

++UIPopoverController+*popover+=+[[UIPopoverController+alloc]+initWithContentViewController:navController];
++popover.delegate+=+self;

++popover.popoverContentSize+=+CGSizeMake(400.0,+500.0);

++//Subtract+the+height+of+the+header+to+match+the+total+popover+size+(not+just+the+view).
++myVC.contentSizeForViewInPopover+=+CGSizeMake(400.0,+500-44);

++[myVC+release];
++[navController+release];
++[popover+release];|297932|我相信，当涉及到导航控制器，并按下后退按钮，它会导致弹出窗口默认为其默认大小。通过为视图控制器myVC添加contentSizeForViewInPopover属性，它可以强制指定大小。|297933|希望这能对你有所帮助。|297934|库尔特|297935|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|17|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

I had a similar issue.

I had a popover present from a button in a toolbar. The popover was set to a specific size. It was a table view. When the table row was selected, a new view controller with a navigation controller was called.

When the back button was selected, the popover became the default size (320x1100 I believe), instead of the specific size that I desired.

The original code was:

<pre><code> MyTableViewController *myVC = [[MyTableViewController alloc] init];
 UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:myVC];

 UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:navController];
 popover.delegate = self;

 popover.popoverContentSize = CGSizeMake(400.0, 500.0);

 [myVC release];
 [navController release];
 [popover release];
</code></pre>

I added one line to solve the problem. Granted it is kind of a work around because I had to subtract the height of the header. Maybe one of you could enlighten me with a better method. Anyway, it works.

<pre><code> MyTableViewController *myVC = [[MyTableViewController alloc] init];

 UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:myVC];

 UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:navController];
 popover.delegate = self;

 popover.popoverContentSize = CGSizeMake(400.0, 500.0);

 //Subtract the height of the header to match the total popover size (not just the view).
 myVC.contentSizeForViewInPopover = CGSizeMake(400.0, 500-44);

 [myVC release];
 [navController release];
 [popover release];
</code></pre>

I believe that when a nav controller is involved, and the back button is pressed, it causes the popover to default to its default size. By adding the contentSizeForViewInPopover property for the view controller myVC, it forces the specific size.

Hope this is helpful.

Kurt

blocks|key|3028814|text|就像在viewWillAppear中处理它一样，处理这个问题的另一种方法是覆盖contentSizeForViewInPopover。非常简洁：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3028815|-(CGSize)contentSizeForViewInPopover
{
++++return+self.view.bounds.size;
}|code-block|syntax|javascript|3028816|entityMap^0|3|E|13|R|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Much like handling it in <code>viewWillAppear</code>, another way to deal with this is to override <code>contentSizeForViewInPopover</code>. Very terse:

<pre><code>-(CGSize)contentSizeForViewInPopover
{
 return self.view.bounds.size;
}
</code></pre>

blocks|key|3243147|text|对于IOS5|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3243148|我建议你在下面这样做：|3243149|-+(void)viewDidLoad+{
++++[super+viewDidLoad];

++++CGSize+size+=+CGSizeMake(320,+480);+//+size+of+view+in+popover
++++self.contentSizeForViewInPopover+=+size;

}|code-block|syntax|javascript|3243150|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|$]]

For IOS5

I recommend you do it in:

<pre><code>- (void)viewDidLoad {
 [super viewDidLoad];

 CGSize size = CGSizeMake(320, 480); // size of view in popover
 self.contentSizeForViewInPopover = size;

}
</code></pre>

blocks|key|3243174|text|为什么不在将下一个控制器推送到导航堆栈之前设置contentSizeForViewInPopover呢？不需要在viewWillAppear等文件中设置大小。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3243175|[nextController+setContentSizeForViewInPopover:[self+contentSizeForViewInPopover]];
[[self+navigationController]+pushViewController:nextController+animated:YES];|code-block|syntax|javascript|3243176|适用于IOS+5.1|3243177|entityMap^0|N|R|1K|E|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

Why not just set the <code>contentSizeForViewInPopover</code> before you push the next controller onto the navigation stack? No need to set sizes in <code>viewWillAppear</code> and such.

<pre><code>[nextController setContentSizeForViewInPopover:[self contentSizeForViewInPopover]];
[[self navigationController] pushViewController:nextController animated:YES];
</code></pre>

Works on IOS 5.1

blocks|key|300355|text|不要为我工作，当我使用这个的时候：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|300356|[UIPopoverController+
++++[UINavigationController]+=+root+vc+=+[UIViewController+vc1]+=>+[UIViewController+vc2]+
]|code-block|syntax|javascript|300357|当弹出窗口显示正常时，按vc1上的按钮并将vc2按到导航控制器|300358|下一步返回vc1+(根)，在vc2中按下按钮(popToRootViewController方法)；|300359|我们可以看到popover改变了自己的大小，但是vc1的大小是旧的...这是什么？|300360|300361|好的，现在开始工作……在我的控制器中添加popover属性|300362|self.contentSizeForViewInPopover+=+(CGSize){400,+200};
self.navigationController.contentSizeForViewInPopover+=+self.contentSizeForViewInPopover;
self.popover.popoverContentSize+=+self.contentSizeForViewInPopover;|300363|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|X|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|Z|8|@]|9|@]|A|$]]|$1|P|3|Q|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|R|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|S|$]]

Don't work for me, when i use this:

<pre><code>[UIPopoverController 
 [UINavigationController] = root vc = [UIViewController vc1] =&gt; [UIViewController vc2] 
]
</code></pre>

<blockquote>
 When appear popover is all good, press button on vc1 and push vc2 to navigation controller
 
 Next return to vc1 (root) pressing button in vc2 (popToRootViewController method);
 
 We can see that popover change own size, but vc1 size is old... WHAT IS THIS???
</blockquote>

Ok, now work... Add popover property in my controller

<pre><code>self.contentSizeForViewInPopover = (CGSize){400, 200};
self.navigationController.contentSizeForViewInPopover = self.contentSizeForViewInPopover;
self.popover.popoverContentSize = self.contentSizeForViewInPopover;
</code></pre>

blocks|key|300371|text|在导航中使用的所有视图控制器的-(空)viewDidLoad中，编写代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|300372|self+setContentSizeForViewInPopover:CGSizeMake(320,+500)];|code-block|syntax|javascript|300373|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 the -(void)viewDidLoad of all the view controllers you are using in navigation write the code:

<pre><code>self setContentSizeForViewInPopover:CGSizeMake(320, 500)];
</code></pre>

blocks|key|3243332|text|有两种方法可以在情节提要中设置contentSizeForViewInPopover。您可以将导航控制器中的视图控制器设置为FreeForm，并将根视图设置为所需的大小。或者，您可以保持模拟指标为推断的，并选中“使用显式大小”并在其中设置您想要的大小。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3243333|然后，在导航控制器中的每个视图控制器中，添加以下内容...|3243334|-+(void)viewDidAppear:(BOOL)animated+{
+++++[super+viewDidAppear:animated];

+++++["yourpopoverController"+setPopoverContentSize:CGSizeMake(self.
+++++++++++contentSizeForViewInPopover.width,+seld.contentSizeForViewInPopover.height+%2B+self.
+++++++++++navigationController.navigationBar.frame.size.height)+animated:YES];
}|code-block|syntax|javascript|3243335|在过渡动画中，新视图将与顶部对齐，然后高度将相应调整。|3243336|这样，您就不必覆盖contentSizeForViewInPopover，或者在视图控制器中专门指定一些其他大小。这些都在故事板上。|3243337|如果您的某个视图控制器具有可变高度，那么您确实需要覆盖该视图中的contentSizeForViewInPopover，如下所示……|3243338|-+(CGSize)contentSizeForViewInPopover+{
++++return+CGSizeMake(450,+"calculate+your+height+here");
}|3243339|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

There are two ways to set the contentSizeForViewInPopover in the storyboard. You can set your view controllers that are with your navigation controller, to FreeForm and set the root views to the desired size. Or, you can keep the simulated metric as inferred and check "Use Explicit Size" and set the size you want there.

Then, in each view controller that is within your navigation controller, add the following...

<pre><code>- (void)viewDidAppear:(BOOL)animated {
 [super viewDidAppear:animated];

 ["yourpopoverController" setPopoverContentSize:CGSizeMake(self.
 contentSizeForViewInPopover.width, seld.contentSizeForViewInPopover.height + self.
 navigationController.navigationBar.frame.size.height) animated:YES];
}
</code></pre>

In the transition animation, the new view will come in aligned with the top, and then the height will be adjusted accordingly.

This way, you don't have to override contentSizeForViewInPopover, or specify some other size specifically in your view controllers. It's all in the storyboard.

If one of your view controllers has a variable height, then you do need to override contentSizeForViewInPopover in that view like so...

<pre><code>- (CGSize)contentSizeForViewInPopover {
 return CGSizeMake(450, "calculate your height here");
}
</code></pre>

blocks|key|298068|text|对于iOS+7，请使用以下设置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298069|-+(void)viewDidLoad
{
++++[super+viewDidLoad];

++++CGSize+size+=+CGSizeMake(320,+768);+//+size+of+view+in+popover
++++self.preferredContentSize+=+size;
}|code-block|syntax|javascript|298070|UIViewController.contentSizeForViewInPopover首先在iOS+7中被弃用。|offset|length|style|CODE|298071|entityMap^0|0|0|0|18|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]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For iOS 7 use the following:

<pre><code>- (void)viewDidLoad
{
 [super viewDidLoad];

 CGSize size = CGSizeMake(320, 768); // size of view in popover
 self.preferredContentSize = size;
}
</code></pre>

<code>UIViewController.contentSizeForViewInPopover</code> has been deprecated first in iOS 7.

blocks|key|303226|text|这个东西可能只用过一次，但在xCode+6上就不行了，因为contentSizeForViewInPopover被弃用了。幸运的是，它在故事板加载时受到尊重。我下载了一个xml编辑器(Xmplify)并破解了故事板。将关键帧contentSizeForViewInPopover设置为所需的大小。保存并替换(先制作副本)情节提要。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|303227|更确切地说：|303228|<+viewController>

+++++<value+key="contentSizeForViewInPopover"+type="size"+width="450"+height="280"+/+>

</viewController>|code-block|syntax|javascript|303229|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|$]]

This stuff may have worked once but not with xCode 6 wherein contentSizeForViewInPopover is deprecated. Luckily it's respected at storyboard load time. I downloaded an xml editor (Xmplify) and hacked the storyboard. Set the key contentSizeForViewInPopover to the size you want. Save and replace (make a copy first) storyboard.

More specifically : 

<pre><code>&lt; viewController&gt;

 &lt;value key="contentSizeForViewInPopover" type="size" width="450" height="280" / &gt;

&lt;/viewController&gt;
</code></pre>

blocks|key|298111|text|运行Swift+4和iOS+11，唯一可能的解决方案是我。使用showViewController:sender:+and+showDetailViewController:sender:而不是presentViewController:animated:completion:。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|298112|来自Apple+Doc|298113|298114|的showViewController:sender:和showDetailViewController:sender:方法提供了最适合和最灵活的方式来显示视图控制器。这些方法让演示视图控制器决定如何最好地处理演示。例如，容器视图控制器可能会将视图控制器合并为一个子级，而不是以模态的方式呈现它。默认行为以模态的方式呈现视图控制器。|blockquote|298115|298116|entityMap^0|V|1R|2P|16|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|U|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|V|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

Running Swift 4 and iOS 11 the only possible solution was for me. To use <code>showViewController:sender: and showDetailViewController:sender:</code> instead of <code>presentViewController:animated:completion:</code>. 

From the Apple Doc 

<blockquote>
 The showViewController:sender: and showDetailViewController:sender: methods offer the most adaptive and flexible way to display view controllers. These methods let the presenting view controller decide how best to handle the presentation. For example, a container view controller might incorporate the view controller as a child instead of presenting it modally. The default behavior presents the view controller modally.
</blockquote>

I have a popover containing a UINavigationController. I can display the popover fine, and it contains the navController just fine. The navController contains a tableView and when I select an item it creates a new detail view:

<pre><code> DeviceDetailViewController *detailViewController = 
[[[DeviceDetailViewController alloc] initWithNibName:@"DeviceDetailViewController" bundle:nil] autorelease];
</code></pre>

I then push it the new view controller:

<pre><code> [self.navigationController pushViewController:detailViewController animated:YES];
</code></pre>

This is when the problem occurs: after pushing the new view the popover resizes to the maximum height available on the iPad.

I have tried setting the height of all the views in the xib to fixed height rather than flexible. I have tried explicitly setting the height of the popover. I have also tried using different view controllers as the child view. The problem remains: the popover wants to resize itself to max height automatically whenever a new view is pushed to the navigation controller.

Here's a <a href="https://stackoverflow.com/questions/2926308/uipopovercontroller-w-uinavigationcontroller-subview-contentsizeforviewinpopover">question</a> which discusses trying to deliberately control the size of the popover when pushing new views:

I thought this might be a brute force method to control the size. Strangely enough, though, it actually causes some quick graphics quirks (as if the view were being freshly animated in) followed by continuing to resize as described above.

In other words, something is literally forcing the popover to its maximum height, and it seems to occur after all delegate methods have been called.

Is it the navigation controller? Has anyone seen this kind of thing?

UIPopoverController automatically resizing to max height on pushViewController

我有一个包含UINavigationController的popover。我可以很好地显示弹出窗口，而且它包含的navController也很好。navController包含一个tableView，当我选择一个项目时，它会创建一个新的详细视图：     DeviceDetailViewController *deta...

问在pushViewController上UIPopoverController自动调整到最大高度
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