ios 在 UIView 顶部添加阴影
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Adding shadow to top of UIView
提问by Apollo
How can I add a shadow to the top of my UIViewI've tried the following but with no luck...
如何在我的顶部添加阴影UIView我尝试了以下但没有运气......
childView.layer.cornerRadius = 5;
childView.layer.masksToBounds = YES;
childView.layer.shadowOffset = CGSizeMake(-15, 20);
childView.layer.shadowRadius = 5;
childView.layer.shadowOpacity = 0.5;
回答by Ryan Herubin
Swift 3 Extension:
斯威夫特 3 扩展：
This includes default values for the app I'm working on, but you can change them to match the style you want in your app.
这包括我正在处理的应用程序的默认值，但您可以更改它们以匹配您想要的应用程序样式。
enum VerticalLocation: String {
case bottom
case top
}
extension UIView {
func addShadow(location: VerticalLocation, color: UIColor = .black, opacity: Float = 0.5, radius: CGFloat = 5.0) {
switch location {
case .bottom:
addShadow(offset: CGSize(width: 0, height: 10), color: color, opacity: opacity, radius: radius)
case .top:
addShadow(offset: CGSize(width: 0, height: -10), color: color, opacity: opacity, radius: radius)
}
}
func addShadow(offset: CGSize, color: UIColor = .black, opacity: Float = 0.5, radius: CGFloat = 5.0) {
self.layer.masksToBounds = false
self.layer.shadowColor = color.cgColor
self.layer.shadowOffset = offset
self.layer.shadowOpacity = opacity
self.layer.shadowRadius = radius
}
}
回答by Mischa
You need to set the childview's masksToBoundsproperty to NOin order to make the shadow visible.
您需要将子视图的masksToBounds属性设置NO为 以使阴影可见。
childView.layer.masksToBounds = NO;
回答by joels
Set your masksToBounds = NO. The reason you are not seeing the shadow is because it is completely hidden behind your view when the masksToBounds is YES.
设置您的masksToBounds = NO. 您没有看到阴影的原因是，当 maskToBounds 为 YES 时，它完全隐藏在您的视图后面。
If your button is rounded you can instead adjust the view's imageEdgeInset value. ie: UIEdgeInsetsMake(5, 0, 0, 10);
如果您的按钮是圆形的，您可以改为调整视图的 imageEdgeInset 值。IE：UIEdgeInsetsMake(5, 0, 0, 10);
回答by ProgrammingProton
1.Step: First create an outlet of uiview
1.步骤：首先创建一个uiview的outlet
2.Step:
2.步骤：
buttonBackgroundView.layer.shadowOpacity = 0.7
buttonBackgroundView.layer.shadowOffset = CGSize(width: 3, height: 3)
buttonBackgroundView.layer.shadowRadius = 15.0
buttonBackgroundView.layer.shadowColor = UIColor.black.cgColor
回答by Literphor
Try setting masksToBounds to NO. According to this link Whats the best way to add a drop shadow to my UIViewmaking that YES will clip the layers extending past the view's bounds.
尝试将masksToBounds 设置为NO。根据此链接，将阴影添加到我的 UIView 的最佳方法是什么，使 YES 将剪辑延伸超过视图边界的图层。
