swift 轻松创建NSAttributed Strings。

Posted 2021-05-19

extension NSMutableAttributedString {
    @discardableResult func bold(_ text: String, _ fontSize: CGFloat = 16, _ textAlign: NSTextAlignment = .center) -> NSMutableAttributedString {
        let style = NSMutableParagraphStyle()
        style.alignment = textAlign
        
        let attrs: [NSAttributedStringKey: Any] = [.font: UIFont(name: YOUR_FONT, size: fontSize)!,
                                                   NSAttributedStringKey.paragraphStyle: style]
        let boldString = NSMutableAttributedString(string:text, attributes: attrs)
        append(boldString)
        
        return self
    }
    
    @discardableResult func normal(_ text: String,  _ fontSize: CGFloat = 16, _ textAlign: NSTextAlignment = .center) -> NSMutableAttributedString {
        let style = NSMutableParagraphStyle()
        style.alignment = textAlign
        
        let attrs: [NSAttributedStringKey: Any] = [.font: UIFont(name: YOUR_FONT, size: 16)!,
                                                   NSAttributedStringKey.paragraphStyle: style]
        let normal = NSAttributedString(string: text, attributes: attrs)
        append(normal)
        
        return self
    }
}