blocks|key|3354782|text|下面给出的代码应该可以正常工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3354783|++++NSMutableArray+*subvies+=+[NSMutableArray+arrayWithArray:[self+subviews]];//Get+all+subviews..

++++[viewToBeMadeForemost+retain];+//Retain+the+view+to+be+made+top+view..

++++[subvies+removeObject:viewToBeMadeForemost];//remove+it+from+array

++++[subvies+addObject:viewToBeMadeForemost];//add+as+last+item

++++[self+setSubviews:subvies];//set+the+new+array..|code-block|syntax|javascript|3354784|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|$]]

Below given code should work fine..

<pre><code> NSMutableArray *subvies = [NSMutableArray arrayWithArray:[self subviews]];//Get all subviews..

 [viewToBeMadeForemost retain]; //Retain the view to be made top view..

 [subvies removeObject:viewToBeMadeForemost];//remove it from array

 [subvies addObject:viewToBeMadeForemost];//add as last item

 [self setSubviews:subvies];//set the new array..
</code></pre>

blocks|key|3354852|text|下面是另一种更清晰、更简洁的实现方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3354853|[viewToBeMadeForemost+removeFromSuperview];
[self+addSubview:viewToBeMadeForemost+positioned:NSWindowAbove+relativeTo:nil];|code-block|syntax|javascript|3354854|根据此方法的文档，当您使用relativeTo:nil时，视图将添加到(或使用NSWindowBelow)其所有同级视图的上方(或下方)。|offset|length|style|CODE|3354855|entityMap^0|0|0|D|E|13|D|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]|$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

Here's another way to accomplish this that's a bit more clear and succinct:

<pre><code>[viewToBeMadeForemost removeFromSuperview];
[self addSubview:viewToBeMadeForemost positioned:NSWindowAbove relativeTo:nil];
</code></pre>

Per the documentation for this method, when you use <code>relativeTo:nil</code> the view is added above (or below, with <code>NSWindowBelow</code>) all of its siblings.

blocks|key|492687|text|另一种方法是使用NSView的sortSubviewsUsingFunction:context:方法根据您的喜好重新排序兄弟视图的集合。例如，定义比较函数：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|492688|static+NSComparisonResult+myCustomViewAboveSiblingViewsComparator(+NSView+*+view1,+NSView+*+view2,+void+*+context+)
{++++
++++if+([view1+isKindOfClass:[MyCustomView+class]])++++
++++++++return+NSOrderedDescending;++++
++++else+if+([view2+isKindOfClass:[MyCustomView+class]])++++
++++++++return+NSOrderedAscending;++++

++++return+NSOrderedSame;
}|code-block|syntax|javascript|492689|然后，当您希望确保您的自定义视图高于所有同级视图时，请将此消息发送到自定义视图的superview：|492690|[[myCustomView+superview]+sortSubviewsUsingFunction:myCustomViewAboveSiblingViewsComparator+context:NULL];|492691|或者，您可以将此代码移动到superview本身，并将消息sortSubviewsUsingFunction:context:发送到self。|492692|entityMap^0|F|Y|0|0|0|0|T|Y|1U|4|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

Another way is to use NSView's sortSubviewsUsingFunction:context: method to re-order a collection of sibling views to your liking. For example, define your comparison function:

<pre><code>static NSComparisonResult myCustomViewAboveSiblingViewsComparator( NSView * view1, NSView * view2, void * context )
{ 
 if ([view1 isKindOfClass:[MyCustomView class]]) 
 return NSOrderedDescending; 
 else if ([view2 isKindOfClass:[MyCustomView class]]) 
 return NSOrderedAscending; 

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

Then when you want to ensure your custom view remains above all sibling views, send this message to your custom view's superview:

<pre><code>[[myCustomView superview] sortSubviewsUsingFunction:myCustomViewAboveSiblingViewsComparator context:NULL];
</code></pre>

Alternatively, you can move this code to the superview itself, and send the message sortSubviewsUsingFunction:context: to self instead.

blocks|key|3354946|text|你可以试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3354947|[viewToBeMadeFirst.window+makeKeyAndOrderFront:nil];|code-block|syntax|javascript|3354948|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|$]]

You might try this:

<pre><code>[viewToBeMadeFirst.window makeKeyAndOrderFront:nil];
</code></pre>

blocks|key|1236370|text|我可以在不调用removeFromSuperView的情况下让它工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1236371|//+pop+to+top
[self+addSubview:viewToBeMadeForemost+positioned:NSWindowAbove+relativeTo:nil];|code-block|syntax|javascript|1236372|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 was able to get this to work without calling removeFromSuperView

<pre><code>// pop to top
[self addSubview:viewToBeMadeForemost positioned:NSWindowAbove relativeTo:nil];
</code></pre>

blocks|key|1239506|text|您只需再次添加视图即可实现此目的；它不会创建视图的另一个实例。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1239507|[self+addSubview:viewToBeMadeForemost];|code-block|syntax|javascript|1239508|您可以在执行此行代码之前和之后记录子视图的数量。|1239509|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|$]]

You can achieve this by just adding the view again; it will not create another instance of it.

<pre><code>[self addSubview:viewToBeMadeForemost];
</code></pre>

You can Log the number of subviews before and after this line of code is executed.

blocks|key|491190|text|在模仿等价UIView方法的SWIFT4类别中使用@Dalmazio的答案，可以得到以下结果：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|491191|extension+NSView+{

++++func+bringSubviewToFront(_+view:+NSView)+{
++++++++++++var+theView+=+view
++++++++++++self.sortSubviews({(viewA,viewB,rawPointer)+in
++++++++++++++++let+view+=+rawPointer?.load(as:+NSView.self)

++++++++++++++++switch+view+{
++++++++++++++++case+viewA:
++++++++++++++++++++return+ComparisonResult.orderedDescending
++++++++++++++++case+viewB:
++++++++++++++++++++return+ComparisonResult.orderedAscending
++++++++++++++++default:
++++++++++++++++++++return+ComparisonResult.orderedSame
++++++++++++++++}
++++++++++++},+context:+&theView)
++++}

}|code-block|syntax|javascript|491192|因此，要在containerView中将subView带到最前面|offset|length|style|CODE|491193|containerView.bringSubviewToFront(subView)|491194|与删除并重新添加视图的解决方案不同，这会保持约束不变|491195|entityMap^0|0|0|5|D|K|7|0|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]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

using @Dalmazio's answer in a Swift 4 category that mimics the equivalent UIView method gives the following:

<pre><code>extension NSView {

 func bringSubviewToFront(_ view: NSView) {
 var theView = view
 self.sortSubviews({(viewA,viewB,rawPointer) in
 let view = rawPointer?.load(as: NSView.self)

 switch view {
 case viewA:
 return ComparisonResult.orderedDescending
 case viewB:
 return ComparisonResult.orderedAscending
 default:
 return ComparisonResult.orderedSame
 }
 }, context: &amp;theView)
 }

}
</code></pre>

so, to bring <code>subView</code> to the front in <code>containerView</code>

<pre><code>containerView.bringSubviewToFront(subView)
</code></pre>

unlike solutions which remove and re-add the view, this keeps constraints unchanged

I have a super view, which has 2 subviews.
These subviews are overlapped.

Whenever i choose a view from a menu, corresponding view should become the front view and handle actions.
i.e., it should be the front most subview. 

<code>acceptsFirstResponder</code> resigns all work fine.
But the mouse down events are sent to the topmost sub view which was set.

Regards,
Dhana

How do I make an NSView move to the front of all NSViews

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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我有一个超级视图，它有两个子视图。这些子视图是重叠的。每当我从菜单中选择一个视图时，相应的视图应该成为前视图并处理操作。也就是说，它应该是最前面的子视图。acceptsFirstResponder辞职，一切都很好。但是鼠标按下事件被发送到设置的最顶层的子视图。问候你，Dhana

问如何将NSView移到所有NSViews的前面
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问如何将NSView移到所有NSViews的前面EN