问题描述

我想在 UIBarButtonItem 上有圆角和阴影.

I want to have rounded corners and shadow on a UIBarButtonItem.

UIButton *useButton = [UIButton buttonWithType:UIButtonTypeCustom];

然后我尝试设置阴影和圆角:

Then I try to set shadow and rounded corners:

useButton.layer.masksToBounds = NO;
useButton.layer.cornerRadius = 4;
useButton.layer.shadowOffset = CGSizeMake(0, 1.5);
useButton.layer.shadowRadius = 0.5;
useButton.layer.shadowOpacity = 1.0;
useButton.layer.shadowColor = [BSTCMColorUtility colorFromHexString:@"#AFAFAF"].CGColor;

最后我制作了 UIBarButtonItem:

UIBarButtonItem *useItem = [[UIBarButtonItem alloc] initWithCustomView:useButton];
[self.navigationItem setRightBarButtonItems:@[useItem]];

没有圆角，但有阴影.

如果我添加:

useButton.clipsToBounds = YES;

和/或:

useButton.layer.masksToBounds = YES;

我得到圆角，但没有阴影.所以我想我会尝试添加一个子层.

I get rounded corners, but no shadow. So I thought that I would try to add a sublayer.

CALayer *useButtonShadowLayer = [CALayer new];
useButtonShadowLayer.frame = useButton.frame;
useButtonShadowLayer.cornerRadius = 4;
useButtonShadowLayer.backgroundColor = [UIColor whiteColor].CGColor;
useButtonShadowLayer.shadowOffset = CGSizeMake(0, 1.5);
useButtonShadowLayer.shadowRadius = 0.5;
useButtonShadowLayer.shadowOpacity = 1.0;
useButtonShadowLayer.shadowColor = [BSTCMColorUtility colorFromHexString:@"#AFAFAF"].CGColor;

useButton.layer.cornerRadius = 4;
useButton.layer.masksToBounds = YES;

UIView *parent = useButton.superview;
[parent.layer insertSublayer:useButtonShadowLayer below:useButton.layer];

它似乎不起作用，我看不到阴影.我得到了圆角.

It doesn't seem to work, I see no shadow. I get rounded corners tho.

UIBarButtonItem/UIButton 上不可能有圆角和阴影吗?

Isn't possible to have rounded corners AND shadow on a UIBarButtonItem/UIButton?

推荐答案

试试这个更新的代码:

UIButton *useButton = [UIButton buttonWithType:UIButtonTypeCustom];
useButton.frame = CGRectMake(100, 430, 100, 40);
useButton.layer.masksToBounds = NO;
useButton.layer.cornerRadius = 10;
useButton.layer.shadowOffset = CGSizeMake(1.5, 1.5);
useButton.layer.shadowRadius = 0.5;
useButton.layer.shadowOpacity = 1.0;
useButton.layer.shadowColor = [UIColor blackColor].CGColor;
useButton.backgroundColor = [UIColor redColor];

UIBarButtonItem *useItem = [[UIBarButtonItem alloc] initWithCustomView:useButton];
[self.navigationItem setRightBarButtonItems:@[useItem]];

这篇关于带有圆角和阴影的 UIBarButtonItem的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！