blocks|key|1262545|text|使用递归：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262546|//+UIView%2BHierarchyLogging.h
@interface+UIView+(ViewHierarchyLogging)
-+(void)logViewHierarchy;
@end

//+UIView%2BHierarchyLogging.m
@implementation+UIView+(ViewHierarchyLogging)
-+(void)logViewHierarchy
{
++++NSLog(@"%25@",+self);
++++for+(UIView+*subview+in+self.subviews)
++++{
++++++++[subview+logViewHierarchy];
++++}
}
@end

//+In+your+implementation
[myView+logViewHierarchy];|code-block|syntax|javascript|1262547|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|$]]

Use recursion:

<pre><code>// UIView+HierarchyLogging.h
@interface UIView (ViewHierarchyLogging)
- (void)logViewHierarchy;
@end

// UIView+HierarchyLogging.m
@implementation UIView (ViewHierarchyLogging)
- (void)logViewHierarchy
{
 NSLog(@"%@", self);
 for (UIView *subview in self.subviews)
 {
 [subview logViewHierarchy];
 }
}
@end

// In your implementation
[myView logViewHierarchy];
</code></pre>

blocks|key|1047727|text|一段时间后，我编写了a+category来调试一些视图。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1047728|IIRC，发布的代码是有效的代码。如果不是，它将为您指明正确的方向。使用风险自负等。|1047729|entityMap|0|LINK|mutability|MUTABLE|url|http://pastebin.com/qhF2uGLN^0|A|A|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]]]]

I wrote <a href="http://pastebin.com/qhF2uGLN" rel="nofollow noreferrer">a category</a> some time back to debug some views.

IIRC, the posted code is the one that worked. If not, it will point you in the right direction. Use at own risk, etc.

blocks|key|1047739|text|this+answer中发布的代码遍历所有窗口、所有视图及其所有子视图。它用于将视图层次结构的打印输出转储到NSLog，但您可以将其用作遍历视图层次结构的基础。它使用递归C函数遍历视图树。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1047740|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2715534/where-does-a-uialertview-live-while-not-dismissed/2715772#2715772^0|0|B|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The code posted in <a href="https://stackoverflow.com/questions/2715534/where-does-a-uialertview-live-while-not-dismissed/2715772#2715772">this answer</a> traverses all windows and all views and all of their subviews. It was used to dump a printout of the view hierarchy to NSLog but you can use it as a basis for any traversal of the view hierarchy. It uses a recursive C function to traverse the view tree.

blocks|key|1262599|text|好的，这是我的解决方案，使用递归和UIView类的包装器(类别/扩展)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262600|//+UIView%2BviewRecursion.h
@interface+UIView+(viewRecursion)
-+(NSMutableArray*)+allSubViews;
@end

//+UIView%2BviewRecursion.m
@implementation+UIView+(viewRecursion)
-+(NSMutableArray*)allSubViews
{
+++NSMutableArray+*arr=[[[NSMutableArray+alloc]+init]+autorelease];
+++[arr+addObject:self];
+++for+(UIView+*subview+in+self.subviews)
+++{
+++++[arr+addObjectsFromArray:(NSArray*)[subview+allSubViews]];
+++}
+++return+arr;
}
@end|code-block|syntax|javascript|1262601|用法:现在您应该遍历所有的子视图，并根据需要对其进行操作。|1262602|//disable+all+text+fields
for(UIView+*v+in+[self.view+allSubViews])
{
+++++if([v+isKindOfClass:[UITextField+class]])
+++++{
+++++++++((UITextField*)v).enabled=NO;
+++++}
}|1262603|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|$]]

Well here is my solution using recursion and a wrapper(category/extension) for the UIView class.

<pre><code>// UIView+viewRecursion.h
@interface UIView (viewRecursion)
- (NSMutableArray*) allSubViews;
@end

// UIView+viewRecursion.m
@implementation UIView (viewRecursion)
- (NSMutableArray*)allSubViews
{
 NSMutableArray *arr=[[[NSMutableArray alloc] init] autorelease];
 [arr addObject:self];
 for (UIView *subview in self.subviews)
 {
 [arr addObjectsFromArray:(NSArray*)[subview allSubViews]];
 }
 return arr;
}
@end
</code></pre>

Usage : Now you should be looping through all the sub views and manipulate them as needed.

<pre><code>//disable all text fields
for(UIView *v in [self.view allSubViews])
{
 if([v isKindOfClass:[UITextField class]])
 {
 ((UITextField*)v).enabled=NO;
 }
}
</code></pre>

blocks|key|1262630|text|我刚刚找到了一种通过调试器完成此操作的有趣方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262631|http://idevrecipes.com/2011/02/10/exploring-iphone-view-hierarchies/|offset|length|1262632|参考此Apple+Technote：|1262633|https://developer.apple.com/library/content/technotes/tn2239/_index.html#SECUIKIT|1262634|只需确保您的调试器已暂停(或者手动设置一个断点来暂停它)，您就可以请求recursiveDescription。|style|CODE|1262635|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|1W|0|0|0|0|29|1|0|Z|K|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|F|3|G|5|6|7|10|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|J|3|K|5|6|7|15|8|@$D|16|E|17|L|M]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|C]]|U|$5|Q|R|S|A|$T|I]]]]

Just found an interesting way to do this through the debugger:

<a href="http://idevrecipes.com/2011/02/10/exploring-iphone-view-hierarchies/" rel="nofollow noreferrer">http://idevrecipes.com/2011/02/10/exploring-iphone-view-hierarchies/</a> 

references this Apple Technote:

<a href="https://developer.apple.com/library/content/technotes/tn2239/_index.html#SECUIKIT" rel="nofollow noreferrer">https://developer.apple.com/library/content/technotes/tn2239/_index.html#SECUIKIT</a>

Just make sure your debugger is paused (either set a break point of pause it manually) and you can ask for the <code>recursiveDescription</code>.

blocks|key|1262695|text|我在创建时对所有内容进行标记。这样就很容易找到任何子视图。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262696|view+=+[aView+viewWithTag:tag];|code-block|syntax|javascript|1262697|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 tag everything when it's created. Then it's easy to find any subview.

<pre><code>view = [aView viewWithTag:tag];
</code></pre>

blocks|key|1047912|text|在奥莱·贝格曼的帮助下。我添加了几行代码以将块的概念合并到其中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1047913|UIView%2BHierarchyLogging.h|1047914|typedef+void+(%5EViewActionBlock_t)(UIView+*);
@interface+UIView+(UIView_HierarchyLogging)
-+(void)logViewHierarchy:+(ViewActionBlock_t)viewAction;
@end|code-block|syntax|javascript|1047915|UIView%2BHierarchyLogging.m|1047916|@implementation+UIView+(UIView_HierarchyLogging)
-+(void)logViewHierarchy:+(ViewActionBlock_t)viewAction+{
++++//view+action+block+-+freedom+to+the+caller
++++viewAction(self);

++++for+(UIView+*subview+in+self.subviews)+{
++++++++[subview+logViewHierarchy:viewAction];
++++}
}
@end|1047917|在ViewController中使用HierarchyLogging类别。你现在可以自由地做你需要做的事情了。|1047918|void+(%5EViewActionBlock)(UIView+*)+=+%5E(UIView+*view)+{
++++if+([view+isKindOfClass:[UIButton+class]])+{
++++++++NSLog(@"%25@",+view);
++++}
};
[self.view+logViewHierarchy:+ViewActionBlock];|1047919|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]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

With the help of Ole Begemann. I added a few lines to incorporate the block concept into it.

UIView+HierarchyLogging.h

<pre><code>typedef void (^ViewActionBlock_t)(UIView *);
@interface UIView (UIView_HierarchyLogging)
- (void)logViewHierarchy: (ViewActionBlock_t)viewAction;
@end
</code></pre>

UIView+HierarchyLogging.m

<pre><code>@implementation UIView (UIView_HierarchyLogging)
- (void)logViewHierarchy: (ViewActionBlock_t)viewAction {
 //view action block - freedom to the caller
 viewAction(self);

 for (UIView *subview in self.subviews) {
 [subview logViewHierarchy:viewAction];
 }
}
@end
</code></pre>

Using the HierarchyLogging category in your ViewController. You are now have freedom to what you need to do.

<pre><code>void (^ViewActionBlock)(UIView *) = ^(UIView *view) {
 if ([view isKindOfClass:[UIButton class]]) {
 NSLog(@"%@", view);
 }
};
[self.view logViewHierarchy: ViewActionBlock];
</code></pre>

blocks|key|1262788|text|这也会显示层次结构级别|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262789|@implementation+UIView+(ViewHierarchyLogging)
-+(void)logViewHierarchy:(int)level
{
++++NSLog(@"%25d+-+%25@",+level,+self);
++++for+(UIView+*subview+in+self.subviews)
++++{
++++++++[subview+logViewHierarchy:(level%2B1)];
++++}
}
@end|code-block|syntax|javascript|1262790|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|$]]

This displays the hierarchy level as well

<pre><code>@implementation UIView (ViewHierarchyLogging)
- (void)logViewHierarchy:(int)level
{
 NSLog(@"%d - %@", level, self);
 for (UIView *subview in self.subviews)
 {
 [subview logViewHierarchy:(level+1)];
 }
}
@end
</code></pre>

blocks|key|1262808|text|这是一个递归代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1262809|+for+(UIView+*subViews+in+yourView.subviews)+{
++++[self+removSubviews:subViews];

}+++

-(void)removSubviews:(UIView+*)subView
{
+++if+(subView.subviews.count>0)+{
+++++for+(UIView+*subViews+in+subView.subviews)+{

++++++++[self+removSubviews:subViews];
+++++}
++}
++else
++{
+++++NSLog(@"%25i",subView.subviews.count);
++++[subView+removeFromSuperview];
++}
}|code-block|syntax|javascript|1262810|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 a recursive code:-

<pre><code> for (UIView *subViews in yourView.subviews) {
 [self removSubviews:subViews];

} 

-(void)removSubviews:(UIView *)subView
{
 if (subView.subviews.count&gt;0) {
 for (UIView *subViews in subView.subviews) {

 [self removSubviews:subViews];
 }
 }
 else
 {
 NSLog(@"%i",subView.subviews.count);
 [subView removeFromSuperview];
 }
}
</code></pre>

blocks|key|1048081|text|顺便说一句，我做了一个开源项目来帮助完成这类任务。它非常简单，并且使用Objective-C2.0块在层次结构中的所有视图上执行代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1048082|https://github.com/egold/UIViewRecursion|offset|length|1048083|示例：|1048084|-(void)makeAllSubviewsGreen
{
++++[self.view+runBlockOnAllSubviews:%5E(UIView+*view)+{

++++++++view.backgroundColor+=+[UIColor+greenColor];
++++}];
}|code-block|syntax|javascript|1048085|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|14|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

By the way, I made an open source project to help with this sort of task. It's really easy, and uses Objective-C 2.0 blocks to execute code on all views in a hierarchy.

<a href="https://github.com/egold/UIViewRecursion" rel="nofollow">https://github.com/egold/UIViewRecursion</a>

Example: 

<pre><code>-(void)makeAllSubviewsGreen
{
 [self.view runBlockOnAllSubviews:^(UIView *view) {

 view.backgroundColor = [UIColor greenColor];
 }];
}
</code></pre>

blocks|key|1262940|text|我希望我先找到了this+page，但是如果(由于某些原因)您想以非递归的方式，而不是在一个Category中，并且使用更多的代码行来做这件事|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1262941|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/10608754/1205267^0|8|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Wish I'd found <a href="https://stackoverflow.com/a/10608754/1205267">this page</a> first, but if (for some reason) you want to do this non-recursively, not in a Category, and with more lines of code

blocks|key|1263029|text|不需要创建任何新函数。在使用Xcode进行调试时就可以这样做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1263030|在视图控制器中设置断点，并使应用程序在该断点处暂停。|1263031|右键单击空白区域，然后按“添加表达式...”在Xcode的监视窗口中。|1263032|输入以下行：|1263033|(NSString*)[self->_view+recursiveDescription]|code-block|syntax|javascript|1263034|如果该值太长，请右键单击该值并选择“打印说明...”。您将在控制台窗口中看到self.view的所有子视图。如果您不想看到self.view的子视图，请将self->_view更改为其他值。|1263035|完成了！没有gdb！|1263036|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|$]]

Need not create any new function. Just do it when debugging with Xcode.

Set a breakpoint in a view controller, and make the app pause at this breakpoint.

Right click the empty area and press "Add Expression..." in Xcode's Watch window.

Input this line:

<pre><code>(NSString*)[self-&gt;_view recursiveDescription]
</code></pre>

If the value is too long, right click it and choose "Print Description of ...". You will see all subviews of self.view in the console window. Change self->_view to something else if you don't want to see subviews of self.view.

Done! No gdb!

blocks|key|1263089|text|下面是上面Ole+Begemann's+answer的一个变体，它添加了缩进来说明层次结构：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1263090|//+UIView%2BHierarchyLogging.h
@interface+UIView+(ViewHierarchyLogging)
-+(void)logViewHierarchy:(NSString+*)whiteSpaces;
@end

//+UIView%2BHierarchyLogging.m
@implementation+UIView+(ViewHierarchyLogging)
-+(void)logViewHierarchy:(NSString+*)whiteSpaces+{
++++if+(whiteSpaces+==+nil)+{
++++++++whiteSpaces+=+[NSString+string];
++++}
++++NSLog(@"%25@%25@",+whiteSpaces,+self);

++++NSString+*adjustedWhiteSpaces+=+[whiteSpaces+stringByAppendingFormat:@"++++"];

++++for+(UIView+*subview+in+self.subviews)+{
++++++++[subview+logViewHierarchy:adjustedWhiteSpaces];
++++}
}
@end|code-block|syntax|javascript|1263091|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/2746508/1078579^0|5|L|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Here is a variation on <a href="https://stackoverflow.com/a/2746508/1078579">Ole Begemann's answer</a> above, which adds indentation to illustrate the hierarchy:

<pre><code>// UIView+HierarchyLogging.h
@interface UIView (ViewHierarchyLogging)
- (void)logViewHierarchy:(NSString *)whiteSpaces;
@end

// UIView+HierarchyLogging.m
@implementation UIView (ViewHierarchyLogging)
- (void)logViewHierarchy:(NSString *)whiteSpaces {
 if (whiteSpaces == nil) {
 whiteSpaces = [NSString string];
 }
 NSLog(@"%@%@", whiteSpaces, self);

 NSString *adjustedWhiteSpaces = [whiteSpaces stringByAppendingFormat:@" "];

 for (UIView *subview in self.subviews) {
 [subview logViewHierarchy:adjustedWhiteSpaces];
 }
}
@end
</code></pre>

blocks|key|1048422|text|我认为所有使用递归的答案(调试器选项除外)都使用了类别。如果你不需要/不想要一个类别，你可以只使用一个实例方法。例如，如果您需要获取视图层次结构中所有标签的数组，您可以这样做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1048423|@interface+MyViewController+()
@property+(nonatomic,+retain)+NSMutableArray*+labelsArray;
@end

@implementation+MyViewController

-+(void)recursiveFindLabelsInView:(UIView*)inView
{
++++for+(UIView+*view+in+inView.subviews)
++++{
++++++++if([view+isKindOfClass:[UILabel+class]])
+++++++++++[self.labelsArray+addObject:+view];
++++++++else
+++++++++++[self+recursiveFindLabelsInView:view];
++++}
}

-+(void)viewWillAppear:(BOOL)animated
{
++++[super+viewWillAppear:animated];

++++self.labelsArray+=+[[NSMutableArray+alloc]+init];
++++[self+recursiveFindLabelsInView:self.view];

++++for+(UILabel+*lbl+in+self.labelsArray)
++++{
++++++++//Do+something+with+labels
++++}
}|code-block|syntax|javascript|1048424|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 think all of the answers using recursion (except for the debugger option) used categories. If you don't need/want a category, you can just use a instance method. For instance, if you need to get an array of all labels in your view hierarchy, you could do this.

<pre><code>@interface MyViewController ()
@property (nonatomic, retain) NSMutableArray* labelsArray;
@end

@implementation MyViewController

- (void)recursiveFindLabelsInView:(UIView*)inView
{
 for (UIView *view in inView.subviews)
 {
 if([view isKindOfClass:[UILabel class]])
 [self.labelsArray addObject: view];
 else
 [self recursiveFindLabelsInView:view];
 }
}

- (void)viewWillAppear:(BOOL)animated
{
 [super viewWillAppear:animated];

 self.labelsArray = [[NSMutableArray alloc] init];
 [self recursiveFindLabelsInView:self.view];

 for (UILabel *lbl in self.labelsArray)
 {
 //Do something with labels
 }
}
</code></pre>

blocks|key|1263186|text|Swift+3中的一个解决方案，它提供所有subviews，而不包括视图本身：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1263187|extension+UIView+{
var+allSubViews+:+[UIView]+{

++++++++var+array+=+[self.subviews].flatMap+{$0}

++++++++array.forEach+{+array.append(contentsOf:+$0.allSubViews)+}

++++++++return+array
++++}
}|code-block|syntax|javascript|1263188|entityMap^0|L|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

A solution in Swift 3 that gives all <code>subviews</code> without including the view itself:

<pre><code>extension UIView {
var allSubViews : [UIView] {

 var array = [self.subviews].flatMap {$0}

 array.forEach { array.append(contentsOf: $0.allSubViews) }

 return array
 }
}
</code></pre>

blocks|key|1048523|text|下面的方法创建一个或多个可变数组，然后遍历输入视图的子视图。这样做时，它会添加初始子视图，然后查询是否有该子视图的任何子视图。如果为真，它将再次调用自身。它会一直这样做，直到添加了层次结构的所有视图。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1048524|-(NSArray+*)allSubs:(UIView+*)view+{

++++NSMutableArray+*+ma+=+[NSMutableArray+new];
++++for+(UIView+*+sub+in+view.subviews){
++++++++[ma+addObject:sub];
++++++++if+(sub.subviews){
++++++++++++[ma+addObjectsFromArray:[self+allSubs:sub]];
++++++++}
++++}
++++return+ma;
}|code-block|syntax|javascript|1048525|使用以下方式调用：|1048526|NSArray+*+subviews+=+[self+allSubs:someView];|1048527|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|$]]

The method below creates one or more mutable arrays, then loops through the subviews of the input view. In doing so it adds the initial subview then queries as to whether there are any subviews of that subview. If true, it calls itself again. It does so until the all the views of the hierarchy have been added. 

<pre><code>-(NSArray *)allSubs:(UIView *)view {

 NSMutableArray * ma = [NSMutableArray new];
 for (UIView * sub in view.subviews){
 [ma addObject:sub];
 if (sub.subviews){
 [ma addObjectsFromArray:[self allSubs:sub]];
 }
 }
 return ma;
}
</code></pre>

Call using: 

<pre><code>NSArray * subviews = [self allSubs:someView];
</code></pre>

blocks|key|1263271|text|这是另一个Swift实现：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1263272|extension+UIView+{
++++var+allSubviews:+[UIView]+{
++++++++return+self.subviews.flatMap+{+[$0]+%2B+$0.allSubviews+}
++++}
}|code-block|syntax|javascript|1263273|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's another Swift implementation:

<pre><code>extension UIView {
 var allSubviews: [UIView] {
 return self.subviews.flatMap { [$0] + $0.allSubviews }
 }
}
</code></pre>

How can I loop through all subviews of a UIView, and their subviews and their subviews?

How can I loop through all subviews of a UIView, and their subviews and their subviews

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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如何遍历UIView的所有子视图，以及它们的子视图和子视图？

问如何遍历UIView的所有子视图，以及它们的子视图和子视图
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问如何遍历UIView的所有子视图，以及它们的子视图和子视图EN