简单图文混排swift

//需求 邱学伟是大帅哥(加个笑脸图片) 邱学伟:红色背景绿色字体加粗显示 是:蓝色字体 10号小字体 大帅哥:灰色42号字体
fileprivate func FuWenBenDemo() {

    //定义富文本即有格式的字符串
    let attributedStrM : NSMutableAttributedString = NSMutableAttributedString()

    //邱学伟
    let qiuxuewei : NSAttributedString = NSAttributedString(string: "邱学伟", attributes: [ NSBackgroundColorAttributeName : UIColor.red,NSForegroundColorAttributeName : UIColor.green, NSFontAttributeName : UIFont.boldSystemFont(ofSize: 28.0)]) //(string: "邱学伟")
    //是
    let shi : NSAttributedString = NSAttributedString(string: "是", attributes: [NSForegroundColorAttributeName : UIColor.blue, NSFontAttributeName : UIFont.systemFont(ofSize: 10.0)])
    //大帅哥
    let dashuaige : NSAttributedString = NSAttributedString(string: "大帅哥", attributes: [NSForegroundColorAttributeName : UIColor.lightGray, NSFontAttributeName : UIFont.systemFont(ofSize: 42.0)])
    //笑脸图片
    let smileImage : UIImage = UIImage(named: "d_hehe")!
    let textAttachment : NSTextAttachment = NSTextAttachment()
    textAttachment.image = smileImage
    textAttachment.bounds = CGRect(x: 0, y: -4, width: 22, height: 22)

    attributedStrM.append(qiuxuewei)
    attributedStrM.append(shi)
    attributedStrM.append(dashuaige)
    attributedStrM.append(NSAttributedString(attachment: textAttachment))

    label.attributedText = attributedStrM
}