Question

   let bottomBorder = CALayer()
        let borderWidth = CGFloat(1.0)
        bottomBorder.borderColor = UIColor(hex: 0xf5f5f5).CGColor
        bottomBorder.frame = CGRect(x: 0, y: summary.frame.size.height - borderWidth, width:  summary.frame.size.width, height: summary.frame.size.height)
        bottomBorder.borderWidth = borderWidth


        self.summary.layer.addSublayer(bottomBorder)
        self.summary.layer.masksToBounds = true

我知道如何添加底部边框，但是当我将相同的原则应用于＆＃34; topBorder＆＃34;时，其中一个消失了。

Answer 1

您可以使用以下代码添加顶部和底部边框。你的代码只是框架问题。

 let topBorder = CALayer()
        let topHeight = CGFloat(1.0)
        topBorder.borderColor = UIColor.blackColor().CGColor
        topBorder.frame = CGRect(x: 0, y: 0, width:  summary.frame.size.width, height: topHeight)
        topBorder.borderWidth = summary.frame.size.width
        self.summary.layer.addSublayer(topBorder)



        let bottomBorder = CALayer()
        let borderHeight = CGFloat(1.0)
        bottomBorder.borderColor = UIColor.blackColor().CGColor
        bottomBorder.frame = CGRect(x: 0, y: summary.frame.size.height - borderHeight, width:  summary.frame.size.width, height: borderHeight)
        bottomBorder.borderWidth = summary.frame.size.width
        self.summary.layer.addSublayer(bottomBorder)
        self.summary.layer.masksToBounds = true

Answer 2

我认为这是你的框架，根据需要进行审查和修改：

*请注意，此功能已添加为UITextView

的扩展名

func addBorders(color:UIColor) {

    let bottomBorder = CALayer()
    bottomBorder.backgroundColor = color.CGColor
    bottomBorder.frame = CGRectMake(0, CGRectGetHeight(bounds) - 1, CGRectGetWidth(bounds), 1)
    bottomBorder.name = "BottomBorder"
    layer.addSublayer(bottomBorder)

    let topBorder = CALayer()
    topBorder.backgroundColor = color.CGColor
    topBorder.frame = CGRectMake(0, 0, CGRectGetWidth(bounds), 1)
    topBorder.name = "TopBorder"
    layer.addSublayer(topBorder)
}

Answer 3

var bottomBorder = CALayer（）

bottomBorder.frame = CGRect（x：0.0，y：self.descriptionTextView.frame.size.height - 1，width：self.descriptionTextView.frame.size.width，height：1.0）

bottomBorder.backgroundColor = UIColor（hex：K.NODD_RED_HEX）.cgColor

self.descriptionTextView.layer.addSublayer（bottomBorder）

如何向UITextView添加底部和顶部边框？

3 个答案: