blocks|key|172824|text|您还需要禁用表视图的掩码转换。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|172825|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You also need to disable mask translation for the table view.

blocks|key|172832|text|签出"Auto+Layout+still+required+after+executing+-layoutSubviews"+with+UITableViewCell+subclass，因为问题看起来是相同的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|172833|我能够实现one+of+the+answers中提到的类别，这为我解决了这个问题。但是，我必须在UITableView类上创建类别，而不是在那个特定答案中讨论的UITableViewCell类上创建类别。|style|CODE|172834|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/12610783/auto-layout-still-required-after-executing-layoutsubviews-with-uitableviewcel|1|https://stackoverflow.com/a/12941256/2075607^0|2|2I|0|0|1C|B|28|F|5|I|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]|$A|Y|B|Z|F|G]]|9|@$A|10|B|11|1|12]]|C|$]]|$1|H|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Checkout <a href="https://stackoverflow.com/questions/12610783/auto-layout-still-required-after-executing-layoutsubviews-with-uitableviewcel">&quot;Auto Layout still required after executing -layoutSubviews&quot; with UITableViewCell subclass</a> as the question appears to be the same.

I was able to implement the category mentioned in <a href="https://stackoverflow.com/a/12941256/2075607">one of the answers</a> which solved the problem for me. However, I had to create the category on the <code>UITableView</code> class instead of the <code>UITableViewCell</code> class as is discussed in that particular answer.

blocks|key|2984755|text|您可以将“无文章视图”作为自定义标题添加到表格中，以确保其位置正确。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2984756|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can add your 'no articles view' as a custom header in the table to make sure it's positioned correctly.

blocks|key|169232|text|一种可能的解决方案不是直接在表中添加noArticlesView，而是将UITableView放在容器UIView中(最终设置适合容器框架的表约束)，然后使用您设置的相同约束将noArticlesView约束到容器，并在代码中的相同位置(即-tableView:numberOfRowsInSection:+UITableViewDataSource方法内部)进行约束。我用一个简单的例子测试了它，它起作用了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|169233|您需要对代码应用的更改是将UITableViewController替换为UIViewController，添加一个容器视图(除非您希望您的表与视图控制器的视图完全匹配，在这种情况下，此视图就是容器)，然后将noArticleView约束到容器而不是表。我的示例代码在这个答案的底部。|169234|我将尝试对问题的原因以及为什么这个解决方案有效做出可能的解释，但考虑到我的解释的一部分是基于猜测，所以它不可能完全准确。|169235|首先，简要解释一下iOS中的视图层次渲染过程是如何工作的。布局引擎的第一步是确定视图层次结构中所有视图和子视图的大小和位置。这通常是通过迭代方法完成的，其中自动布局约束被评估，以便确定视图和子视图的大小和位置，然后调用每个视图的-layoutSubviews方法进行微调:这意味着您可以在评估约束之后更改布局。布局引擎需要的是，如果-layoutSubviews方法再次更改约束，则必须再次调用-[super+layoutSubviews]以允许迭代过程:如果没有发生这种情况，布局引擎将引发异常。在UITableView的情况下，我猜测tableView:numberOfRowsInSection:方法是在内部UITableView+layoutSubviews方法中的某个地方调用的，并且该方法不会调用超级layoutSubviews。因此，如果您的表数据源方法更新了内部表约束，则会在该方法的末尾触发异常。我提出的解决方案之所以有效，是因为应用于表的唯一约束是对容器的外部约束，因此在布局过程的第一阶段进行评估，而添加到表数据源方法中的约束与表无关，因为它们应用于表外部的视图(容器和noArticlesView)，因此它们不会影响内部表视图布局过程。|169236|//
//++RootController.h

#import+

@interface+RootController+:+UIViewController

@property+(nonatomic,strong)+IBOutlet+UITableView+*table;
@property+(nonatomic,strong)+IBOutlet+UIView+*container;

@end

//
//++RootController.m


#import+"RootController.h"

@implementation+RootController

#pragma+mark+-+Table+view+data+source

-+(NSInteger)numberOfSectionsInTableView:(UITableView+*)tableView
{
++++//+Return+the+number+of+sections.
++++return+1;
}

-+(NSInteger)tableView:(UITableView+*)tableView+numberOfRowsInSection:(NSInteger)section
{
++++//+Return+the+number+of+rows+in+the+section.

++++UIView+*_v+=+[[UIView+alloc]+init];
++++_v.backgroundColor=[UIColor+redColor];
++++_v.translatesAutoresizingMaskIntoConstraints=NO;

++++[self.container+addSubview:_v];
++++NSLayoutConstraint+*_c1+=+[NSLayoutConstraint+constraintWithItem:_v
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++attribute:NSLayoutAttributeTop+relatedBy:NSLayoutRelationEqual+toItem:self.container+attribute:NSLayoutAttributeTop+multiplier:1.0+constant:20.0];
++++NSLayoutConstraint+*_c2+=+[NSLayoutConstraint+constraintWithItem:_v
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++attribute:NSLayoutAttributeBottom+relatedBy:NSLayoutRelationEqual+toItem:self.container+attribute:NSLayoutAttributeBottom+multiplier:1.0+constant:-20.0];
++++NSLayoutConstraint+*_c3+=+[NSLayoutConstraint+constraintWithItem:_v
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++attribute:NSLayoutAttributeLeading+relatedBy:NSLayoutRelationEqual+toItem:self.container+attribute:NSLayoutAttributeLeft+multiplier:1.0+constant:20.0];
++++NSLayoutConstraint+*_c4+=+[NSLayoutConstraint+constraintWithItem:_v
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++attribute:NSLayoutAttributeTrailing+relatedBy:NSLayoutRelationEqual+toItem:self.container+attribute:NSLayoutAttributeRight+multiplier:1.0+constant:-20.0];
++++[self.container+addConstraints:@[_c1,_c2,_c3,_c4]];

++++return+0;
}|code-block|syntax|javascript|169237|entityMap^0|I|E|10|B|1F|6|2G|E|3C|X|4A|L|0|D|L|0|0|36|F|4M|F|5H|N|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|18|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|L|3|M|5|N|7|1G|8|@]|D|@]|E|$O|P]]|$1|Q|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|R|$]]

A possible solution is not to add the <code>noArticlesView</code> directly in the table, but is to put the <code>UITableView</code> inside a container <code>UIView</code> (eventually setting table constraints to fit with the container frame) and then constraint your <code>noArticlesView</code> to the container, using the same constraints you set and in the same place in your code, that is inside the <code>-tableView:numberOfRowsInSection:</code> <code>UITableViewDataSource</code> method. 
I tested it with a simple example, and it worked. 
The changes you need to apply to your code are to replace the <code>UITableViewController</code> with a UIViewController, add a container view (unless you want your table to fit exactly with the view controller's view, in such case this view is the container) and then constraint your noArticleView to the container instead of the table.
My example code is at the bottom of this answer. 
I will try to make a possible explanation of the reason of the issue and why this solution works, but consider that part of my explanation is based on guesses so it couldn't be completely exact. 
First of all a brief explanation of how the view hierarchy rendering process works in iOS. The first step for the layout engine is to determine the size and position of all views and subviews in the view hierarchy. Usually this is done with an iterative approach, where auto layout constraints are evaluated, in order to determine size and position of views and subviews, and then each view's <code> -layoutSubviews</code> method is called for fine tuning: this means that you can change your layout after constraints are evaluated. What the layout engine requires is that if the <code>-layoutSubviews</code> method changes constraints again, then <code>-[super layoutSubviews]</code> must be called again to allow the iterative process: if this doesn't happen the layout engine raises an exception. In the case of the UITableView my guess is that the tableView:numberOfRowsInSection: method is called somewhere within the internal UITableView layoutSubviews method and this method doesn't call [super layoutSubviews]. So if your table data source method updates internal table constraints, at the end of the method the exception is triggered. The solution I propose works because the only constraint applied to the table is the external constraint towards the container, so evaluated at the first stage of the layout process, while the constraints added in the table data source method are not relevant to the table as they are applied to views external to the table (container and noArticlesView) so they don't affect the internal table view layout process.

<pre><code>

//
// RootController.h

#import 

@interface RootController : UIViewController

@property (nonatomic,strong) IBOutlet UITableView *table;
@property (nonatomic,strong) IBOutlet UIView *container;

@end

//
// RootController.m


#import "RootController.h"

@implementation RootController

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
 // Return the number of sections.
 return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
 // Return the number of rows in the section.

 UIView *_v = [[UIView alloc] init];
 _v.backgroundColor=[UIColor redColor];
 _v.translatesAutoresizingMaskIntoConstraints=NO;

 [self.container addSubview:_v];
 NSLayoutConstraint *_c1 = [NSLayoutConstraint constraintWithItem:_v
 attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.container attribute:NSLayoutAttributeTop multiplier:1.0 constant:20.0];
 NSLayoutConstraint *_c2 = [NSLayoutConstraint constraintWithItem:_v
 attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.container attribute:NSLayoutAttributeBottom multiplier:1.0 constant:-20.0];
 NSLayoutConstraint *_c3 = [NSLayoutConstraint constraintWithItem:_v
 attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.container attribute:NSLayoutAttributeLeft multiplier:1.0 constant:20.0];
 NSLayoutConstraint *_c4 = [NSLayoutConstraint constraintWithItem:_v
 attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.container attribute:NSLayoutAttributeRight multiplier:1.0 constant:-20.0];
 [self.container addConstraints:@[_c1,_c2,_c3,_c4]];

 return 0;
}
</code></pre>

blocks|key|169239|text|我取消选中视图控制器上的自动布局，现在不会发生崩溃|type|unstyled|depth|inlineStyleRanges|entityRanges|data|169240|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I unchecked auto layout on the view controller the crash is not occurring now

blocks|key|170372|text|也有同样的问题。已将视图添加到self.tableView和使用的约束。不要通过addSubview将视图添加到表视图中:而是将它们添加为页眉、页脚或单元格。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|170373|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Had the same problem. Added view(s) to self.tableView and used constraints. Do not add the views to the table view via addSubview: but add them as header(s), footer(s) or cells.

blocks|key|171210|text|self.view+layoutIfNeeded|type|unstyled|depth|inlineStyleRanges|entityRanges|data|171211|希望这能有所帮助|171212|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

[self.view layoutIfNeeded]

Hope this helps

blocks|key|170391|text|我在对UIScrollView进行子类化时，在iOS+7(而不是8)上收到了同样的错误消息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|170392|我用类似于下面的方式覆盖了layoutSubviews：|170393|-+(void)layoutSubviews+{
++++[super+layoutSubviews];
++++//+code+to+scroll+the+view
}|code-block|syntax|javascript|170394|我通过将对超级的layoutSubviews的调用移动到该方法中的最后一件事来解决了这个问题：|170395|-+(void)layoutSubviews+{
++++//+code+to+scroll+the+view
++++[super+layoutSubviews];
}|170396|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I was subclassing UIScrollView and received the same error message on iOS 7 (but not 8). 

I was overriding layoutSubviews in a manner similar to the following:

<pre><code>- (void)layoutSubviews {
 [super layoutSubviews];
 // code to scroll the view
}
</code></pre>

I resolved the issue by moving the call to super's layoutSubviews to be the last thing in the method:

<pre><code>- (void)layoutSubviews {
 // code to scroll the view
 [super layoutSubviews];
}
</code></pre>

blocks|key|2984905|text|对我来说是这样的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2984906|self.tableView.backgroundView+=+self.emptyView;|code-block|syntax|javascript|2984907|我改成了这个|2984908|++++NSComparisonResult+order+=+[[UIDevice+currentDevice].systemVersion+compare:+@"8.0"+options:+NSNumericSearch];
if+(order+==+NSOrderedSame+%7C%7C+order+==+NSOrderedDescending)+{
++++//+OS+version+>=+8.0
++++self.tableView.backgroundView+=+self.emptyView;
}else{
++++[self.tableView.backgroundView+addSubview:self.emptyView];
}|2984909|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|$]]

for me is was this 

<pre><code>self.tableView.backgroundView = self.emptyView;
</code></pre>

I changed to this

<pre><code> NSComparisonResult order = [[UIDevice currentDevice].systemVersion compare: @"8.0" options: NSNumericSearch];
if (order == NSOrderedSame || order == NSOrderedDescending) {
 // OS version &gt;= 8.0
 self.tableView.backgroundView = self.emptyView;
}else{
 [self.tableView.backgroundView addSubview:self.emptyView];
}
</code></pre>

Since I added the following code, every time my app opens this <code>UITableViewController</code> it crashes:

<pre><code> self.noArticlesView = [[UIView alloc] init];
 self.noArticlesView.translatesAutoresizingMaskIntoConstraints = NO;
 self.noArticlesView.backgroundColor = [UIColor colorWithRed:0.961 green:0.961 blue:0.961 alpha:1];

 [self.view addSubview:self.noArticlesView];

 [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.noArticlesView attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTop multiplier:1.0 constant:0.0]];
 [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.noArticlesView attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1.0 constant:0.0]];
 [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.noArticlesView attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0.0]];
 [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.noArticlesView attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeRight multiplier:1.0 constant:0.0]]; 
</code></pre>

And it gives me this error:

<blockquote>
 * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Auto Layout still required after executing -layoutSubviews. UITableView's implementation of -layoutSubviews needs to call super.'
</blockquote>

What on earth am I doing wrong? I call that code in <code>tableView:numberOfRowsInSection:</code> when there's 0 rows.

Why am I getting a "Auto Layout still required after executing -layoutSubviews" error every time my app launches now?

容器

因为我添加了以下代码，所以我的应用程序每次打开这个UITableViewController时都会崩溃： self.noArticlesView = [[UIView alloc] init]; self.noArticlesView.translatesAutoresizingMaskIntoConstraints ...

问为什么每次启动我的应用程序时都会收到“执行-layoutSubviews后仍然需要自动布局”的错误？
EN

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问为什么每次启动我的应用程序时都会收到“执行-layoutSubviews后仍然需要自动布局”的错误？EN

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问为什么每次启动我的应用程序时都会收到“执行-layoutSubviews后仍然需要自动布局”的错误？
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