Swift 富文本方法封装

1.逾期效果

2.富文本方法

public func changeFontColor(totalString: String, subString: String, font: UIFont, textColor: UIColor)-> NSMutableAttributedString {
        let attStr = NSMutableAttributedString.init(string: totalString)
        attStr.addAttributes([NSAttributedString.Key.foregroundColor: textColor, NSAttributedString.Key.font: font], range: NSRange.init(location: totalString.count-subString.count, length: subString.count))
        return attStr
    }

此方法可以写入到项目公共文件中的工具类中

3.方法调用

        let label = UILabel.init(frame: CGRect.init(x: 30, y: 200, width: UIScreen.main.bounds.size.width - 60, height: 40))
        label.textColor = UIColor.black
        label.font = UIFont.systemFont(ofSize: 13)
        view.addSubview(label)
        label.attributedText = changeFontColor(totalString: "我是13号字体黑色我是17号加粗字体红色", subString: "我是17号加粗字体红色", font: UIFont.systemFont(ofSize: 17), textColor: UIColor.red)