Borders not covering background

问题

I've got a UILabel is using a border the same color as a background which it is half obscuring, to create a nice visual effect. However the problem is that there is still a tiny, yet noticeable, sliver of the label's background color on the OUTSIDE of the border.

The border is not covering the whole label!

Changing the border width doesn't change anything either, sadly.

Here's a picture of what's going on, enlarged so you can see it:

And my code follows:

        iconLbl.frame = CGRectMake(theWidth/2-20, bottomView.frame.minY-20, 40, 40)
        iconLbl.font = UIFont.fontAwesomeOfSize(23)
        iconLbl.text = String.fontAwesomeIconWithName(.Info)
        iconLbl.layer.masksToBounds = true
        iconLbl.layer.cornerRadius = iconLbl.frame.size.width/2
        iconLbl.layer.borderWidth = 5
        iconLbl.layer.borderColor = topBackgroundColor.CGColor
        iconLbl.backgroundColor = UIColor.cyanColor()
        iconLbl.textColor = UIColor.whiteColor()

Is there something I'm missing? Or am I going to have to figure out another to achieve this effect?

Thanks!

EDIT: List of things I've tried so far!

Changing layer.borderWidth
Fussing around with clipsToBounds/MasksToBounds
Playing around the the layer.frame
Playing around with an integral frame

EDIT 2:

No fix was found! I used a workaround by extending this method on to my UIViewController

func makeFakeBorder(inputView:UIView,width:CGFloat,color:UIColor) -> UIView {
        let fakeBorder = UIView()
        fakeBorder.frame = CGRectMake(inputView.frame.origin.x-width, inputView.frame.origin.y-width, inputView.frame.size.width+width*2, inputView.frame.size.height+width*2)
        fakeBorder.backgroundColor = color
        fakeBorder.clipsToBounds = true
        fakeBorder.layer.cornerRadius = fakeBorder.frame.size.width/2
        fakeBorder.addSubview(inputView)
        inputView.center = CGPointMake(fakeBorder.frame.size.width/2, fakeBorder.frame.size.height/2)
        return fakeBorder
    }

来源：https://stackoverflow.com/questions/33350689/borders-not-covering-background

标签

swift

uibutton

uilabel

border