blocks|key|936677|text|可以，可以给layer.cornerRadius+(需要添加#import+<QuartzCore/QuartzCore.h>__)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|936678|对于创建圆形的任何控件，而不是设置UIImageView的layer，这是创建圆形图像并将其添加到backGroundColor为ClearColor的UIImageView上的最佳方法。|936679|也参考这两个源码。|936680|https://www.cocoacontrols.com/controls/circleview|936681|和|936682|https://www.cocoacontrols.com/controls/mhlazytableimages|936683|这可能会对您的情况有所帮助：|936684|entityMap|0|LINK|mutability|MUTABLE|url|1^0|6|I|U|X|0|H|B|T|5|1D|F|1T|A|24|B|0|0|0|1D|0|0|0|0|1K|1|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1F|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|1G|8|@]|D|@$9|1H|A|1I|1|1J]]|E|$]]|$1|L|3|M|5|6|7|1K|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1L|8|@]|D|@$9|1M|A|1N|1|1O]]|E|$]]|$1|P|3|Q|5|6|7|1P|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]]|S|$T|$5|U|V|W|E|$X|K]]|Y|$5|U|V|W|E|$X|O]]]]

Yes, it is possible to give <code>layer.cornerRadius</code> (need to add 
<code>#import &lt;QuartzCore/QuartzCore.h&gt;</code>) 
for create circular any control but in your case instead of set <code>layer</code> of <code>UIImageView</code> it is The
Best Way to Create Your Image as circular and add it on <code>UIImageView</code> Which have <code>backGroundColor</code> is <code>ClearColor</code>.

Also refer this Two Source of code.

<a href="https://www.cocoacontrols.com/controls/circleview" rel="noreferrer">https://www.cocoacontrols.com/controls/circleview</a> 

and 

<a href="https://www.cocoacontrols.com/controls/mhlazytableimages" rel="noreferrer">https://www.cocoacontrols.com/controls/mhlazytableimages</a>

This might be helpful in your case:

blocks|key|4630033|text|使用下面的链接创建圆形图像视图非常简单，只需为您的表视图创建自定义单元格，而不是分配cellForRowAtIndexPath方法中的所有内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4630034|how+to+make+button+round+with+image+background+in+IPhone?|offset|length|4630035|上面的链接给出了按钮的例子，只需将其用于图像视图即可。|4630036|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/6338578/how-to-make-button-round-with-image-background-in-iphone^0|0|0|1L|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Creating circular image view and thats quite easy with the below SO link, just have custom cells for your table view instead of allocating every thing in your cellForRowAtIndexPath method.

<a href="https://stackoverflow.com/questions/6338578/how-to-make-button-round-with-image-background-in-iphone">how to make button round with image background in IPhone?</a>

The above link gives you example for buttons just use it for your image views.

blocks|key|4630052|text|使用此代码..这将是有帮助的..|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4630053|++++UIImage*+image+=+...;
++++UIGraphicsBeginImageContextWithOptions(imageView.bounds.size,+NO,+1.0);
++++//+Add+a+clip+before+drawing+anything,+in+the+shape+of+an+rounded+rect
++++[[UIBezierPath+bezierPathWithRoundedRect:imageView.bounds
++++++++++++++++++++++++++++++++cornerRadius:50.0]+addClip];
++++//+Draw+your+image
++++[image+drawInRect:imageView.bounds];

++++//+Get+the+image,+here+setting+the+UIImageView+image
++++imageView.image+=+UIGraphicsGetImageFromCurrentImageContext();

++++//+Lets+forget+about+that+we+were+drawing
++++UIGraphicsEndImageContext();|code-block|syntax|javascript|4630054|它对我来说很好。:)|4630055|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|$]]

Use this code..
This will be helpful..

<pre><code> UIImage* image = ...;
 UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, NO, 1.0);
 // Add a clip before drawing anything, in the shape of an rounded rect
 [[UIBezierPath bezierPathWithRoundedRect:imageView.bounds
 cornerRadius:50.0] addClip];
 // Draw your image
 [image drawInRect:imageView.bounds];

 // Get the image, here setting the UIImageView image
 imageView.image = UIGraphicsGetImageFromCurrentImageContext();

 // Lets forget about that we were drawing
 UIGraphicsEndImageContext();
</code></pre>

It works fine for me. :)

blocks|key|2073585|text|如果在纯色背景上显示图像，一种简单的解决方案可能是使用中间有一个透明圆圈的叠加图像。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2073586|这样，你仍然可以使用正方形图像，并在它们上面添加圆形图像，以获得圆形效果。|2073587|如果您不需要操作图像或在复杂的背景颜色上显示它们，这可以是一个简单的解决方案，而不会影响性能。|2073588|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you showing the images over a solid background color, an easy solution could be to use an overlay image with a transparent circle in the middle. 

This way you can still use square images and add the circle image above them to get the circular effect. 

If you don't need to manipulate your images or show them on a complex background color, this can be a simple solution with no performance hit.

blocks|key|4630101|text|只需将cornerRadius设置为宽度或高度的一半(假设对象的视图为正方形)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4630102|例如，如果对象的视图的宽度和高度都为50：|4630103|itemImageView.layer.cornerRadius+=+25;|code-block|syntax|javascript|4630104|更新-正如用户atulkhatri指出的那样，如果你不添加：|4630105|itemImageView.layer.masksToBounds+=+YES;|4630106|entityMap^0|3|C|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

Simply set the <code>cornerRadius</code> to half of the width or height (assuming your object's view is square).

For example, if your object's view's width and height are both 50:

<pre><code>itemImageView.layer.cornerRadius = 25;
</code></pre>

Update - As user atulkhatri points out, it won't work if you don't add:

<pre><code>itemImageView.layer.masksToBounds = YES;
</code></pre>

blocks|key|4630129|text|添加边框的步骤|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4630130|self.ImageView.layer.borderWidth+=+3.0f;

self.ImageView.layer.borderColor+=+[UIColor+whiteColor].CGColor;|code-block|syntax|javascript|4630131|对于圆形|4630132|self.ImageView.layer.cornerRadius+=+self.ImageView.frame.size.width+/+2;
self.ImageView.clipsToBounds+=+YES;|4630133|请参考此链接|4630134|http://www.appcoda.com/ios-programming-circular-image-calayer/|offset|length|4630135|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|1Q|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|12|8|@]|9|@$O|13|P|14|1|15]]|A|$]]|$1|Q|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|N]]]]

To Add border

<pre><code>self.ImageView.layer.borderWidth = 3.0f;

self.ImageView.layer.borderColor = [UIColor whiteColor].CGColor;
</code></pre>

For Circular Shape

<pre><code>self.ImageView.layer.cornerRadius = self.ImageView.frame.size.width / 2;
self.ImageView.clipsToBounds = YES;
</code></pre>

Refer this link

<a href="http://www.appcoda.com/ios-programming-circular-image-calayer/">http://www.appcoda.com/ios-programming-circular-image-calayer/</a>

blocks|key|2077874|text|设置UIImageView的高度和宽度相同，例如：Height=60和Width+=+60，那么cornerRadius应该正好是一半。我在我的case.It中保留了30。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2077875|+self.imageView.layer.cornerRadius+=+30;
+self.imageView.layer.borderWidth+=+3;
+self.imageView.layer.borderColor+=+[UIColor+whiteColor].CGColor;
+self.imageView.layer.masksToBounds+=+YES;|code-block|syntax|javascript|2077876|entityMap^0|P|9|Z|A|1C|C|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$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]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

Set the height &amp; width of the of the UIImageView to be the same e.g.:<code>Height=60</code> &amp; <code>Width = 60</code>, then the <code>cornerRadius</code> should be exactly the half.I have kept it 30 in my case.It worked for me.

<pre><code> self.imageView.layer.cornerRadius = 30;
 self.imageView.layer.borderWidth = 3;
 self.imageView.layer.borderColor = [UIColor whiteColor].CGColor;
 self.imageView.layer.masksToBounds = YES;
</code></pre>

blocks|key|936818|text|下面是在swift中使用IBDesignable和IBInspectable子类UIImageView的一个更新的方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|936819|@IBDesignable+class+RoundableUIImageView:+UIImageView+{
++++private+var+_round+=+false
++++@IBInspectable+var+round:+Bool+{
++++++++set+{
++++++++++++_round+=+newValue
++++++++++++makeRound()
++++++++}
++++++++get+{
++++++++++++return+self._round
++++++++}
++++}
++++override+internal+var+frame:+CGRect+{
++++++++set+{
++++++++++++super.frame+=+newValue
++++++++++++makeRound()
++++++++}
++++++++get+{
++++++++++++return+super.frame
++++++++}

++++}

++++private+func+makeRound()+{
++++++++if+self.round+==+true+{
++++++++++++self.clipsToBounds+=+true
++++++++++++self.layer.cornerRadius+=+(self.frame.width+%2B+self.frame.height)+/+4
++++++++}+else+{
++++++++++++self.layer.cornerRadius+=+0
++++++++}
++++}

++++override+func+layoutSubviews()+{
++++++++++++makeRound()
++++}
}|code-block|syntax|javascript|936820|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 more up to date method in swift using IBDesignable and IBInspectable to subclass UIImageView

<pre><code>@IBDesignable class RoundableUIImageView: UIImageView {
 private var _round = false
 @IBInspectable var round: Bool {
 set {
 _round = newValue
 makeRound()
 }
 get {
 return self._round
 }
 }
 override internal var frame: CGRect {
 set {
 super.frame = newValue
 makeRound()
 }
 get {
 return super.frame
 }

 }

 private func makeRound() {
 if self.round == true {
 self.clipsToBounds = true
 self.layer.cornerRadius = (self.frame.width + self.frame.height) / 4
 } else {
 self.layer.cornerRadius = 0
 }
 }

 override func layoutSubviews() {
 makeRound()
 }
}
</code></pre>

blocks|key|2504724|text|我使用圆形图像视图类…因此，我只是使用它而不是UIImageView，并且对…没有什么需要调整的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2504725|该类还会在圆周围绘制一个可选的边框。圆角图片周围通常会有一个边框。|2504726|它不是UIImageView子类，因为UIImageView有自己的呈现机制，并且不调用drawRect方法。|2504727|接口:|offset|length|style|BOLD|2504728|#import+<UIKit/UIKit.h>

@interface+MFRoundImageView+:+UIView

@property(nonatomic,strong)+UIImage*+image;

@property(nonatomic,strong)+UIColor*+strokeColor;
@property(nonatomic,assign)+CGFloat+strokeWidth;

@end|code-block|syntax|javascript|2504729|实现:|2504730|#import+"MFRoundImageView.h"


@implementation+MFRoundImageView

-(void)setImage:(UIImage+*)image
{
++++_image+=+image;
++++[self+setNeedsDisplay];
}

-(void)setStrokeColor:(UIColor+*)strokeColor
{
++++_strokeColor+=+strokeColor;
++++[self+setNeedsDisplay];
}

-(void)setStrokeWidth:(CGFloat)strokeWidth
{
++++_strokeWidth+=+strokeWidth;
++++[self+setNeedsDisplay];
}

-+(void)drawRect:(CGRect)rect+{
++++CGContextRef+ctx+=+UIGraphicsGetCurrentContext();
++++CGPathRef+path+=+CGPathCreateWithEllipseInRect(self.bounds,+NULL);
++++CGContextAddPath(ctx,+path);
++++CGContextClip(ctx);
++++[self.image+drawInRect:rect];

++++if+(+(+_strokeWidth+>+0.0f+)+&&+_strokeColor+)+{
++++++++CGContextSetLineWidth(ctx,+_strokeWidth*2);+//+Half+border+is+clipped
++++++++[_strokeColor+setStroke];
++++++++CGContextAddPath(ctx,+path);
++++++++CGContextStrokePath(ctx);
++++}
++++CGPathRelease(path);
}

@end|2504731|entityMap^0|0|0|0|0|3|0|0|0|3|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Z|8|@$H|10|I|11|J|K]]|9|@]|A|$]]|$1|L|3|M|5|N|7|12|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|13|8|@$H|14|I|15|J|K]]|9|@]|A|$]]|$1|S|3|T|5|N|7|16|8|@]|9|@]|A|$O|P]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

I use a Round Image View class…
So I just use it instead of UIImageView, and have nothing to tweak…

This class also draws an optional border around the circle. There is often a border around rounded pictures.

It is not a UIImageView subclass because UIImageView has its own rendering mechanism, and does not call the drawRect method..

Interface :

<pre><code>#import &lt;UIKit/UIKit.h&gt;

@interface MFRoundImageView : UIView

@property(nonatomic,strong) UIImage* image;

@property(nonatomic,strong) UIColor* strokeColor;
@property(nonatomic,assign) CGFloat strokeWidth;

@end
</code></pre>

Implementation :

<pre><code>#import "MFRoundImageView.h"


@implementation MFRoundImageView

-(void)setImage:(UIImage *)image
{
 _image = image;
 [self setNeedsDisplay];
}

-(void)setStrokeColor:(UIColor *)strokeColor
{
 _strokeColor = strokeColor;
 [self setNeedsDisplay];
}

-(void)setStrokeWidth:(CGFloat)strokeWidth
{
 _strokeWidth = strokeWidth;
 [self setNeedsDisplay];
}

- (void)drawRect:(CGRect)rect {
 CGContextRef ctx = UIGraphicsGetCurrentContext();
 CGPathRef path = CGPathCreateWithEllipseInRect(self.bounds, NULL);
 CGContextAddPath(ctx, path);
 CGContextClip(ctx);
 [self.image drawInRect:rect];

 if ( ( _strokeWidth &gt; 0.0f ) &amp;&amp; _strokeColor ) {
 CGContextSetLineWidth(ctx, _strokeWidth*2); // Half border is clipped
 [_strokeColor setStroke];
 CGContextAddPath(ctx, path);
 CGContextStrokePath(ctx);
 }
 CGPathRelease(path);
}

@end
</code></pre>

blocks|key|2504742|text|swift中的，在您的viewDidLoad方法中，带有userImage出口：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2504743|self.userImage.layer.borderWidth+=+1;
self.userImage.layer.borderColor+=+UIColor.whiteColor().CGColor;
self.userImage.layer.cornerRadius+=+self.userImage.frame.size.width+/+2;
self.userImage.clipsToBounds+=+true;|code-block|syntax|javascript|2504744|entityMap^0|7|X|B|B|S|9|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|D]|$9|S|A|T|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|U|8|@]|E|@]|F|$J|K]]|$1|L|3|-4|5|6|7|V|8|@]|E|@]|F|$]]]|M|$]]

In swift, inside your <code>viewDidLoad</code> method, with the <code>userImage</code> outlet:

<pre><code>self.userImage.layer.borderWidth = 1;
self.userImage.layer.borderColor = UIColor.whiteColor().CGColor;
self.userImage.layer.cornerRadius = self.userImage.frame.size.width / 2;
self.userImage.clipsToBounds = true;
</code></pre>

blocks|key|2073695|text|使用extension的Swift中的有效解决方案|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2073696|extension+UIView{
++func+circleMe(){
++++++let+radius+=+CGRectGetWidth(self.bounds)+/+2
++++++self.layer.cornerRadius+=+radius
++++++self.layer.masksToBounds+=+true
++}
}|code-block|syntax|javascript|2073697|用法：|2073698|self.venueImageView.circleMe()|2073699|entityMap^0|2|9|C|5|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$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]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Usable solution in <code>Swift</code> using <code>extension</code>:

<pre><code>extension UIView{
 func circleMe(){
 let radius = CGRectGetWidth(self.bounds) / 2
 self.layer.cornerRadius = radius
 self.layer.masksToBounds = true
 }
}
</code></pre>

Usage:

<pre><code>self.venueImageView.circleMe()
</code></pre>

blocks|key|4630363|text|Swift中的将此扩展用于CircularImageView或RoundedImageView+:|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4630364|extension+UIView+{

++++func+circular(borderWidth:+CGFloat+=+0,+borderColor:+UIColor+=+UIColor.whiteColor())+{
++++++++let+radius+=+CGRectGetWidth(self.bounds)+/+2
++++++++self.layer.cornerRadius+=+radius
++++++++self.layer.masksToBounds+=+true

++++++++self.layer.borderWidth+=+borderWidth
++++++++self.layer.borderColor+=+borderColor.CGColor
++++}

++++func+roundedCorner(borderWidth:+CGFloat+=+0,+borderColor:+UIColor+=+UIColor.whiteColor())+{
++++++++let+radius+=+CGRectGetWidth(self.bounds)+/+2
++++++++self.layer.cornerRadius+=+radius+/+5
++++++++self.layer.masksToBounds+=+true

++++++++self.layer.borderWidth+=+borderWidth
++++++++self.layer.borderColor+=+borderColor.CGColor
++++}

}|code-block|syntax|javascript|4630365|使用：|4630366|self.ImageView.circular()
self.ImageView.roundedCorner()|4630367|entityMap^0|7|16|0|0|0|3|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

In Swift use this Extension for CircularImageView or RoundedImageView :

<pre><code>extension UIView {

 func circular(borderWidth: CGFloat = 0, borderColor: UIColor = UIColor.whiteColor()) {
 let radius = CGRectGetWidth(self.bounds) / 2
 self.layer.cornerRadius = radius
 self.layer.masksToBounds = true

 self.layer.borderWidth = borderWidth
 self.layer.borderColor = borderColor.CGColor
 }

 func roundedCorner(borderWidth: CGFloat = 0, borderColor: UIColor = UIColor.whiteColor()) {
 let radius = CGRectGetWidth(self.bounds) / 2
 self.layer.cornerRadius = radius / 5
 self.layer.masksToBounds = true

 self.layer.borderWidth = borderWidth
 self.layer.borderColor = borderColor.CGColor
 }

}
</code></pre>

Usage:

<pre><code>self.ImageView.circular()
self.ImageView.roundedCorner()
</code></pre>

blocks|key|2077985|text|如果使用一些自动布局和不同的单元格高度，最好这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2077986|+++override+func+layoutSubviews()+{
++++++++super.layoutSubviews()
++++++++logo.layer.cornerRadius+=+logo.frame.size.height+/+2;
++++++++logo.clipsToBounds++++++=+true;
++++}|code-block|syntax|javascript|2077987|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|$]]

If use some autolayout and different cells heights, u better do it this way:

<pre><code> override func layoutSubviews() {
 super.layoutSubviews()
 logo.layer.cornerRadius = logo.frame.size.height / 2;
 logo.clipsToBounds = true;
 }
</code></pre>

blocks|key|2504809|text|对于圆形图像视图，请使用以下代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2504810|self.imageView.layer.cornerRadius+=+self.imageView.frame.size.width+/+2;
self.imageView.clipsToBounds+=+true|code-block|syntax|javascript|2504811|不要忘记更改您的UIView的viewDidLayoutSubviews方法中的cornerRadius。|2504812|示例：|2504813|override+func+viewDidLayoutSubviews()+{
++++super.viewDidLayoutSubviews()
++++self.imageView.layer.cornerRadius+=+self.imageView.frame.size.width+/+2;
++++self.imageView.clipsToBounds+=+true
}|2504814|entityMap^0|0|0|0|0|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For circular imageview, use the below code.
<pre><code>self.imageView.layer.cornerRadius = self.imageView.frame.size.width / 2;
self.imageView.clipsToBounds = true
</code></pre>
Don't forget to change the cornerRadius in viewDidLayoutSubviews method of your UIView.
Example:
<pre><code>override func viewDidLayoutSubviews() {
 super.viewDidLayoutSubviews()
 self.imageView.layer.cornerRadius = self.imageView.frame.size.width / 2;
 self.imageView.clipsToBounds = true
}
</code></pre>

I have a <code>UIImageView</code> on each of my <code>UITableView</code> cells, that display a remote image (using <code>SDWebImage</code>). I've done some <code>QuartzCore</code> layer styling to the image view, as such:

<pre><code>UIImageView *itemImageView = (UIImageView *)[cell viewWithTag:100];
 itemImageView.layer.borderWidth = 1.0f;
 itemImageView.layer.borderColor = [UIColor concreteColor].CGColor;
 itemImageView.layer.masksToBounds = NO;
 itemImageView.clipsToBounds = YES;
</code></pre>

So now I have a 50x50 square with a faint grey border, but I'd like to make it circular instead of squared. The app <code>Hemoglobe</code> uses circular images in table views, and that's the effect I'd like to achieve. However, I don't want to use <code>cornerRadius</code>, as that degrades my scrolling FPS. 

Here's <code>Hemoglobe</code> showing circular <code>UIImageViews</code>: 

<img src="https://i.stack.imgur.com/TOh0K.jpg" alt="enter image description here">

Is there any way to get this effect? Thanks.

Circular UIImageView in UITableView without performance hit?

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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我的每个UITableView单元上都有一个UIImageView，它显示一个远程图像(使用SDWebImage)。我已经对图像视图进行了一些QuartzCore层样式设置，如下所示：UIImageView *itemImageView = (UIImageView *)[cell viewWithTag:100]; ...

问循环UIImageView在UITableView中不会影响性能？
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问循环UIImageView在UITableView中不会影响性能？EN