textView表情代碼相關

    @objc private func setEmotion(noti : NSNotification)
    {
        let emotion = noti.userInfo!["emotion"] as! XBEmotion
        
        if let png = emotion.png
        {
            //保存之前的內容   
            let beforeAttributeString = NSMutableAttributedString(attributedString: MytextView.attributedText)
            
            // 設置一個附件
            let attachment = XBTextAttachment()
            attachment.emotion = emotion
            //設置附件圖片
            let imagePath = "\(emotion.path!)/\(png)"
            attachment.image = UIImage(named: imagePath)
            //用附件來初始化一個字符穿  attrabute
             let attribute = NSAttributedString(attachment: attachment)
            
            //attachment.bounds = CGRectMake(0, 0, MytextView.font!.lineHeight, MytextView.font!.lineHeight)  設表情大小的方式   也可以
            
            //beforeAttributeString.appendAttributedString(attribute)
            //根據光標來設置插入的位置c
            
            let range = MytextView.selectedRange
            beforeAttributeString.insertAttributedString(attribute, atIndex: range.location)
           
            //設置表情的大小，添加屬性
            //beforeAttributeString.addAttributes([NSFontAttributeName : MytextView.font!], range: NSMakeRange(0, beforeAttributeString.length))
           
            MytextView.attributedText = beforeAttributeString
            //設置光標的位置，放到的位置＋1
            MytextView.selectedRange = NSMakeRange(range.location+1, 0)
        }
        else if let emoji = emotion.emoji
        {
            let boforeAttrbuteString = NSMutableAttributedString(attributedString: MytextView.attributedText)
            
            let nowString = NSAttributedString(string: emoji)
            
            let range = MytextView.selectedRange
            
            boforeAttrbuteString.insertAttributedString(nowString, atIndex: range.location)
            
            MytextView.attributedText = boforeAttrbuteString
            //賦值之後設置
            MytextView.selectedRange = NSMakeRange(range.location + 2,0 )
            
        }
        
        textViewDidChange(MytextView)

    }