ios - 如何制作带有可选圆角和边框的 UIView？

Question

我正在将圆角半径应用于 UIView，即 UIRectCornerTopLeft 和 UIRectCornerTopRight。当我应用它时，边框在角落处消失了。如何避免这种情况？

这就是我将边框应用到 UIView 的方式:

 [self.middleView addRoundedCorners:UIRectCornerTopLeft|UIRectCornerTopRight withRadii:CGSizeMake(4, 4)];
 self.middleView.layer.borderWidth = 0.5f;
 self.middleView.layer.borderColor = [[UIColor colorWith8BitRed:0 green:0 blue:0 alpha:0.25]

这是我用来应用可选圆角的类别:

   #import "UIView+Roundify.h"

   @implementation UIView (Roundify)
  - (void)addRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii {
   CALayer *tMaskLayer = [self maskForRoundedCorners:corners withRadii:radii];
   self.layer.mask = tMaskLayer;
   }

  - (CALayer*)maskForRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii {
    CAShapeLayer *maskLayer = [CAShapeLayer layer];
    maskLayer.frame = self.bounds;

  UIBezierPath *roundedPath = [UIBezierPath bezierPathWithRoundedRect:
                             maskLayer.bounds byRoundingCorners:corners cornerRadii:radii];
    maskLayer.fillColor = [[UIColor whiteColor] CGColor];
    maskLayer.backgroundColor = [[UIColor clearColor] CGColor];
    maskLayer.path = [roundedPath CGPath];

   return maskLayer;
 }

Answer 1

试试下面的代码吧

您想要舍入 TopLeft 和 TopRight 的 View

   UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(50, 100, 100, 100)];
   [view1 setBackgroundColor:[UIColor grayColor]];
   [self.view addSubview:view1];

如下代码设置角

UIBezierPath *maskPath;
maskPath = [UIBezierPath bezierPathWithRoundedRect:view1.bounds byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerTopRight) cornerRadii:CGSizeMake(5.0, 5.0)];

CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = self.view.bounds;
maskLayer.path = maskPath.CGPath;
view1.layer.mask = maskLayer;

输出是: