blocks|key|2960128|text|正如Rob所回答的，我已经将代码从viewDidLoad转移到了viewDidAppear，并且问题得到了解决。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2960129|或者在self.view.layoutIfNeeded()代码之前添加viewDidLoad也可以解决这个问题。|2960130|在UITableViewCell的情况下，在awakeFromNib内部添加[self+layoutIfNeeded];，在更新拐角半径之前应该可以解决所有问题。|2960131|entityMap^0|H|B|W|D|0|3|Q|Z|B|0|M|C|12|M|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|K|$]]

As answered by Rob, I've moved the code from <code>viewDidLoad</code> to <code>viewDidAppear</code> and the problem is fixed.

OR 
Adding <code>self.view.layoutIfNeeded()</code> before your code in <code>viewDidLoad</code> also solves the issue. 

In case of UITableViewCell, Inside <code>awakeFromNib</code> add <code>[self layoutIfNeeded];</code> before updating the corner radius should solve all the issues.

blocks|key|2960175|text|我是在awakeFromNib中完成这段代码的，但是在升级到ios+10%2Bxcode+8之后，它就停止工作了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2960176|然后，我将这段代码移到layoutSubViews方法中。然后起作用了。|2960177|希望这对你会有帮助。|2960178|如果您还想在“从this中醒来”中执行此操作，则在延迟之后(使用dispatch_after、NSOperatinQueue或performSelectorWithDelay)执行此操作。|2960179|entityMap^0|3|C|0|B|E|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|U|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|M|$]]

I were done this code in <code>awakeFromNib</code>, but after upgrading to ios 10+xcode 8, it stopped working. 

Then i moved this code to <code>layoutSubViews</code> method. Then it worked.

Hoping, this will be be useful to you.

If you want to still do this in awakefromnib, then do this after putting some delay(by using dispatch_after or NSOperatinQueue or performSelectorWithDelay)

blocks|key|2552264|text|如果它在您的ViewControllers中，而不是将所有层操作移动到viewDidLayer中，那么将代码移动到DispatchQueue中。这对我起了作用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2552265|DispatchQueue.main.async+{
++++++++++++let+layer+=+self.signUpBtn.layer
++++++++++++layer.borderColor+=+UIColor.white.cgColor
++++++++++++layer.borderWidth+=+2+/+UIScreen.main.scale
++++++++}|code-block|syntax|javascript|2552266|希望这对你有帮助|2552267|entityMap^0|6|F|Z|C|1L|D|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]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

If it is inside your one of <code>ViewControllers</code>, instead of moving all layer operations to <code>viewDidLayer</code>, move that code inside <code>DispatchQueue</code>. This worked for me:

<pre><code>DispatchQueue.main.async {
 let layer = self.signUpBtn.layer
 layer.borderColor = UIColor.white.cgColor
 layer.borderWidth = 2 / UIScreen.main.scale
 }
</code></pre>

Hope this helps for you

blocks|key|2960320|text|在XCode8中有一点是新的，我们不能直接设置层的cornerRadius。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960321|当您想应用cornerRadius+of+UIView时，需要在应用cornerRadius之前添加一行代码。|2960322|yourButton.layoutIfNeeded()|2960323|例为目标C。|2960324|[yourButton+layoutIfNeeded];
yourButton.layer.cornerRadius+=+yourButton.frame.size.height/2;
[[yourButton+layer]+setBorderWidth:2.0f];
Example+into+Swift3

self.layoutIfNeeded()
yourButton.layer.cornerRadius+=+self.frame.height+/+2.0
yourButton.layer.borderWidth+=+2.0|code-block|syntax|javascript|2960325|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|R|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|S|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

New one thing into XCode8 we can't directly set the cornerRadius of the layer.

When you want to apply cornerRadius of UIView need to add one line of code before applying cornerRadius.

yourButton.layoutIfNeeded()

Example into Objective C.

<pre><code>[yourButton layoutIfNeeded];
yourButton.layer.cornerRadius = yourButton.frame.size.height/2;
[[yourButton layer] setBorderWidth:2.0f];
Example into Swift3

self.layoutIfNeeded()
yourButton.layer.cornerRadius = self.frame.height / 2.0
yourButton.layer.borderWidth = 2.0
</code></pre>

blocks|key|2960270|text|对我来说，它起作用的是先调用layoutIfNeeded，然后在set+cornerRadius上调用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960271|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|$]]

For me what it worked was first call layoutIfNeeded and later on set cornerRadius

blocks|key|2960346|text|swift+3|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960347|我将尝试这段代码来定义UIImageview的角半径。|2960348|+imgProfile.layer.cornerRadius+=+imgProfile.frame.size.width+/+2
++++++++++++imgProfile.clipsToBounds+=+true|code-block|syntax|javascript|2960349|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|$]]

swift 3

I will try this code to define corner radius of UIImageview

<pre><code> imgProfile.layer.cornerRadius = imgProfile.frame.size.width / 2
 imgProfile.clipsToBounds = true
</code></pre>

blocks|key|1541278|text|使用@IBInspectable标记(或在Objective中使用IBInspectable+)，它们很容易在Interface的属性检查面板中编辑。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1541279|可以在属性检查器中直接设置cornerRadius。|BOLD|1541280|extension+UIView+{

++@IBInspectable+var+cornerRadius:+CGFloat+{

+++get{
++++++++return+layer.cornerRadius
++++}
++++set+{
++++++++layer.cornerRadius+=+newValue
++++++++layer.masksToBounds+=+newValue+>+0
++++}
++}
}|code-block|syntax|javascript|1541281|entityMap^0|2|E|0|D|C|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@$9|T|A|U|B|H]]|D|@]|E|$]]|$1|I|3|J|5|K|7|V|8|@]|D|@]|E|$L|M]]|$1|N|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|O|$]]

Marked with <code>@IBInspectable</code> in swift (or IBInspectable in Objective-C), they are easily editable in Interface Builder’s attributes inspector panel. 
You can directly set cornerRadius in attributes inspector

<pre><code>extension UIView {

 @IBInspectable var cornerRadius: CGFloat {

 get{
 return layer.cornerRadius
 }
 set {
 layer.cornerRadius = newValue
 layer.masksToBounds = newValue &gt; 0
 }
 }
}
</code></pre>

blocks|key|2960251|text|我也有同样的问题，只有iOS+10。我发现ViewDidLayoutSubviews或ViewDidLoad+(可能也是其他的，但我没有检查)只有按照YPK的建议将布局代码包装在分派队列中才能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960252|我使用的是Xamarin，所以语法有点不同：|2960253|DispatchQueue.MainQueue.DispatchAsync(()+=>
++++++++{
++++++++++++SetYourViewProperties();
++++++++});|code-block|syntax|javascript|2960254|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|$]]

I had the same issue, iOS 10 only. I found that ViewDidLayoutSubviews or ViewDidLoad (possibly others too but I didn't check) only worked if I wrapped the layout code in the dispatch queue as YPK suggested.

I am using Xamarin so the syntax is a bit different:

<pre><code>DispatchQueue.MainQueue.DispatchAsync(() =&gt;
 {
 SetYourViewProperties();
 });
</code></pre>

blocks|key|2960309|text|我必须在主线程上运行它才能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960310|++++dispatch_async(dispatch_get_main_queue(),+%5E{
+++++++[imageView.layer+setCornerRadius:4];
+++++++[imageView.layer+setMasksToBounds:YES];
});|code-block|syntax|javascript|2960311|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 had to run it on the main thread for it to work.

<pre><code> dispatch_async(dispatch_get_main_queue(), ^{
 [imageView.layer setCornerRadius:4];
 [imageView.layer setMasksToBounds:YES];
});
</code></pre>

blocks|key|2960339|text|正如在前面的答案中提到的，在改变拐角半径之前添加self.layoutIfNeeded()对我来说是有效的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2960340|entityMap^0|O|L|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

As mentioned in a previous answer, adding <code>self.layoutIfNeeded()</code> before changing the corner radius worked for me.

blocks|key|1541295|text|SWIFT3.2解决方案|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1541296|如果有人仍然有这个问题，我通过在viewDidLayoutSubviews中舍入单元格(或它的任何子视图)来解决这个问题。|1541297|override+func+viewDidLayoutSubviews()+{
++++if+(tableView.visibleCells.count+>+0)+{
++++++++for+cell+in+tableView.visibleCells+{
++++++++++++let+customCell+=+cell+as!+CustomCell
++++++++++++//+Use+any+rounding+method+you+use
++++++++++++customCell.exampleSubview.roundCorners(corners:+.allCorners,+radius:+6)+
++++++++++++customCell.exampleSubview.layoutIfNeeded()
++++++++}
++++}
}|code-block|syntax|javascript|1541298|entityMap^0|0|C|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Swift 3.2 Solution

In case anyone still having this problem, I solved the problem by rounding the cells (or any of its subviews) in viewDidLayoutSubviews.

<pre><code>override func viewDidLayoutSubviews() {
 if (tableView.visibleCells.count &gt; 0) {
 for cell in tableView.visibleCells {
 let customCell = cell as! CustomCell
 // Use any rounding method you use
 customCell.exampleSubview.roundCorners(corners: .allCorners, radius: 6) 
 customCell.exampleSubview.layoutIfNeeded()
 }
 }
}
</code></pre>

blocks|key|2960276|text|在WWDC+2016版中，Apple推荐了一种叫做|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2960277|逐步采用Autolayout|blockquote|2960278|这意味着如果布局简单，则可以使用自动调整大小。并且它将在运行时转换为约束。|2960279|因此其中一个解决方案是使用自动调整大小，您可以在任何时候获得正确的视图框架。但前提是自动调整大小可以满足您的布局要求。|2960280|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|M|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|N|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|O|8|@]|9|@]|A|$]]]|J|$]]

In WWDC 2016 | What's New in Auto Layout, Apple recommend a way of autolayout named 

<blockquote>
 Incrementally Adopting Autolayout
</blockquote>

It means if the layout is easy, you can use autoresizing. And it will translate to constraints at run time.

So one of the solutions is use autoresizing, and you can get right frame about the view in anytime. But the premise is the autoresizing can satisfy your layout

I have a <code>cornerRadius</code> set on a <code>UIView</code> and a <code>UIImageView</code> inside the same <code>UIView</code>. I am calculating the corner radius with <code>RockProfileView.frame.size.height / 2</code> but the UIView stopped showing in iOS 10. 

After further checking i found the value of <code>RockProfileView.frame.size.height / 2</code> is coming out to be 1000.0 while the width and height constraint is set to 64.0

When I hardcoded the <code>RockProfileView.layer.cornerRadius = 32</code> to 64/2 it works just fine. 

What could be the issue ?

Full code:

<pre><code> RockProfileView.layer.cornerRadius = RockProfileView.frame.size.height / 2
 RockProfileView.clipsToBounds = true
 RockProgressView.layer.masksToBounds = true
</code></pre>

cornerRadius stopped working in Swift 2.3 / iOS 10 / Xcode 8

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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我在一个UIView上设置了一个UIView，在同一个UIView中有一个UIImageView。我正在用RockProfileView.frame.size.height / 2计算拐角半径，但是UIView在iOS 10中不再显示。经过进一步检查，我发现RockProfileView.frame.size.height / 2的值为1000.0，而宽度和高度约束设置为64.0当我将RockPr

问cornerRadius在SWIFT2.3/ iOS 10 / Xcode 8中停止工作
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回答 12

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问cornerRadius在SWIFT2.3/ iOS 10 / Xcode 8中停止工作
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