UILabel改变行间距、字间距（swift）_swift uilabel调整字间距-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_31901919/article/details/54314279

本文介绍了一种在Swift中为UILabel自定义字间距和行间距的方法。通过扩展UILabel类，可以轻松调整UILabel内文字的间距。

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有时候根据需求需要改变label字与字或行与行之间间距大小，但系统并没有提供这样的方法，下面我对label写了一个延展来实现这一功能！

extension UILabel {

/**  改变行间距  */
func changeLineSpace(space:CGFloat) {
    if self.text == nil || self.text == "" {
        return
    }
    let text = self.text
    let attributedString = NSMutableAttributedString.init(string: text!)
    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.lineSpacing = space
    attributedString.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: .init(location: 0, length: (text?.length())!))
    self.attributedText = attributedString
    self.sizeToFit()
}

/**  改变字间距  */
func changeWordSpace(space:CGFloat) {
    if self.text == nil || self.text == "" {
        return
    }
    let text = self.text
    let attributedString = NSMutableAttributedString.init(string: text!, attributes: [NSKernAttributeName:space])
    let paragraphStyle = NSMutableParagraphStyle()
    attributedString.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: .init(location: 0, length: (text?.length())!))
    self.attributedText = attributedString
    self.sizeToFit()
}

/**  改变字间距和行间距  */
func changeSpace(lineSpace:CGFloat, wordSpace:CGFloat) {
    if self.text == nil || self.text == "" {
        return
    }
    let text = self.text
    let attributedString = NSMutableAttributedString.init(string: text!, attributes: [NSKernAttributeName:wordSpace])
    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.lineSpacing = lineSpace
    attributedString.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: .init(location: 0, length: (text?.length())!))
    self.attributedText = attributedString
    self.sizeToFit()

}
赶快试一下吧！

}