UIView 角半径和阴影？
在一本杂志中，我读到了有关 UIView 类的一些不错的扩展。您将能够向任何 UIView 添加带有角弧度的边框或阴影。
@implementation UIView (Extentions)
-(void) enableRoundRectsWithValue:(float)value
{
self.layer.masksToBounds = true;
self.layer.cornerRadius = value;
}
-(void) enableShadow
{
self.layer.masksToBounds = false;
self.layer.shadowOffset = CGSizeMake(0,2);
self.layer.shadowOpacity = 0.5;
}
@end
虽然这些方法本身效果很好，但组合在一起效果不佳。我不能有圆角半径和阴影。至少不像你期望的那样。我猜是因为 maskToBounds 在一种方法中设置为 true，在另一种方法中设置为 false。
如何获得具有角半径和阴影（具有相同角半径）的 UIView？
In a magazin I read about some nice extensions for the UIView class. You will be able to add a border with corner radian or a drop shadow to any UIView.
@implementation UIView (Extentions)
-(void) enableRoundRectsWithValue:(float)value
{
self.layer.masksToBounds = true;
self.layer.cornerRadius = value;
}
-(void) enableShadow
{
self.layer.masksToBounds = false;
self.layer.shadowOffset = CGSizeMake(0,2);
self.layer.shadowOpacity = 0.5;
}
@end
While these methods work fine for themselves they don't play nice together. I can't have a corner radius and a shadow. At least not like you expect them to be. I guess because masksToBounds is set to true in one method and false in the other.
How can I get a UIView with a corner radius and also a shadow (with the same corner radius)?
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它有点老了，但更多有同样问题的人可以来这里寻找解决方案。
我想这篇文章可以提供帮助。它解释了一些关于 CALayer 和混合效果的信息，包括角半径和阴影。
It's kind of old but more people with the same problem can get here looking for a solution.
I guess this post can help. It explains a little about
CALayerand about mixing effects, including corner radius and shadows.