创建100％轮UIView / UIImageview

Question

我打算使用以下代码行来添加＆＃34;圆形视图＆＃34;：

_myBackView = [[UIView alloc] initWithFrame:rect];
_myBackView.backgroundColor = [UIColor colorWithR:153 G:85 B:57 alpha:1.0];
_myBackView.layer.cornerRadius = artworkViewWidth / 2;
_myBackView.layer.masksToBounds = YES;
_myBackView.layer.borderWidth = 0;
_myBackView.clipsToBounds = NO;
[self.view addSubview:_myBackView];

视图创建得很好，看起来大多是圆的。但问题是它似乎没有＆＃34; 100％回合＆＃34; - 尽管我将clipsToBounds属性设置为NO，但四条边似乎仍有点剪裁。

任何指导都将不胜感激。

编辑：刚添加了repro图片。请注意被夹住的4个边缘。

Answer 1

你可以尝试这个（使用圆形png遮罩层）

- (void)useMaskFor: (UIView*)colorArea {

    CALayer *maskLayer = [CALayer layer];
    maskLayer.frame = colorArea.bounds;
    UIImage *maskImage = [UIImage imageNamed:@"cirMask.png"];
    maskLayer.contents = (__bridge id)maskImage.CGImage;
    colorArea.layer.mask = maskLayer;
}

回答How to draw a custom UIView that is just a circle - iPhone app

Answer 2

 _image.layer.cornerRadius = _image.frame.size.height/2;

 _image.layer.masksToBounds = YES;

尝试上面的代码。