Question

我希望UIBarButtonItem上有圆角和阴影。

UIButton *useButton = [UIButton buttonWithType:UIButtonTypeCustom];

然后我尝试设置阴影和圆角：

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]];

我没有圆角，但我确实得到了阴影。

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图层。

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。

UIBarButtonItem / UIButton上是否无法使用圆角和阴影？

Answer 1

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]];

Answer 2

    UIButton *useButton = [UIButton buttonWithType:UIButtonTypeCustom];
    useButton.frame = CGRectMake(0, 0, 60, 30);
    useButton.backgroundColor = [UIColor redColor];
    useButton.layer.masksToBounds = NO;
    useButton.layer.cornerRadius = 4;
    useButton.layer.shadowOffset = CGSizeMake(0, 1.5);
    useButton.layer.shadowRadius = 5;
    useButton.layer.shadowOpacity = 1.0;
//    useButton.layer.shadowColor = [UIColor blackColor].CGColor;
    useButton.layer.borderColor = [UIColor blackColor].CGColor;
    [self.view addSubview:useButton];

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

Answer 3

btnname.layer.cornerRadius = 8.0;
btnname.layer.shadowOffset = CGSizeMake(2, 2);

Answer 4

btn.layer.cornerRadius = 2.0 ;

Answer 5

buttonName.layer.cornerRadius = 2;
buttonName.layer.borderWidth = 1;
buttonName.layer.borderColor = [UIColor blacColor].CGColor;

带圆角和阴影的UIBarButtonItem

5 个答案: