UILabel带圆角，阴影和背景图案

Question

我一直在尝试每一种方法，我发现，但我无法做到。我只是想制作一个带圆角的标签，一个带背景图案的阴影。只有当我不想要圆角时，影子才会起作用。我无法让他们在一起！

这里是我的代码的影子：

label.text = msg; 
label.textAlignment = UITextAlignmentCenter; 
label.frame = CGRectMake(20,10,280,40); 
label.backgroundColor 
    = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"msg_box_bg.png"]]; 

[label.layer setCornerRadius:10]; 
[label.layer setMasksToBounds:NO]; 

/* Shadow */ 
label.layer.shadowColor = [UIColor blackColor].CGColor; 
label.layer.shadowOpacity = 0.6; 
label.layer.shadowOffset = CGSizeMake(0,0); 
label.layer.shadowRadius = 3; 

这给了我的影子没有圆角。但如果我使用

[label.layer setMasksToBounds:YES]; 

这将给我没有阴影的圆角。我已使用了阴影路径的提醒，所以用阴影路径的代码如下所示：

label.text = msg; 
label.textAlignment = UITextAlignmentCenter; 
label.frame = CGRectMake(20,10,280,40); 
label.backgroundColor 
    = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"msg_box_bg.png"]]; 

[label.layer setCornerRadius:10]; 
[label.layer setMasksToBounds:YES]; 

/* Shadow */ 
label.layer.shadowColor = [UIColor blackColor].CGColor; 
label.layer.shadowOpacity = 0.6; 
label.layer.shadowOffset = CGSizeMake(0,0); 
label.layer.shadowRadius = 3; 
label.layer.shadowPath = [[UIBezierPath bezierPathWithRoundedRect:label.frame cornerRadius:10]CGPath]; 
label.layer.shouldRasterize = YES; 

此代码给我圆润的边角，但没有影子。 有什么建议吗？

谢谢！

Answer 1

我用下面的代码来获得你后的结果。

CGSize size = CGSizeMake(280, 40); 

/** Shadow */ 
CALayer *shadowLayer = [CALayer new]; 
shadowLayer.frame = CGRectMake(20,100,size.width,size.height); 
shadowLayer.cornerRadius = 10; 

shadowLayer.backgroundColor = [UIColor clearColor].CGColor; 
shadowLayer.shadowColor = [UIColor blackColor].CGColor; 
shadowLayer.shadowOpacity = 0.6; 
shadowLayer.shadowOffset = CGSizeMake(0,0); 
shadowLayer.shadowRadius = 3; 

/** Label */ 
UILabel *label = [UILabel new]; 
label.text = @"Hello World"; 
label.textAlignment = UITextAlignmentCenter; 
label.frame = CGRectMake(0, 0, size.width, size.height); 
label.backgroundColor = [UIColor clearColor]; 
label.layer.cornerRadius = 10; 
[label.layer setMasksToBounds:YES]; 
// customLabel.backgroundColor = [UIColor whiteColor]; 
label.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"options.png"]]; 

/** Add the Label to the shawdow layer */ 
[shadowLayer addSublayer:label.layer]; 

[self.view.layer addSublayer:shadowLayer];  

[shadowLayer release];