代码使用swift4 Xcode9及以上

主要思路是

Textview使用NSMutableAttributedString 转化为 html字符 给后台

其中图片另外 截取htmlStr里相应的图片标示 组成字典imgs[“标示Str”] = “图片Base64” 给后台

再编辑时拿到后台的 带图html字符串转为NSMutableAttributedString给Textview 使用enumerateAttribute可以获取图片

之后再保存和新建的保存差不多

主要注意NSAttachment的使用

          attStr.enumerateAttribute(NSAttributedStringKey.attachment, in:NSRange.init(location:0, length:myHaq.attStr.length), options:NSAttributedString.EnumerationOptions(rawValue:0), using: { (value, range, stop)in
             if let attachImg = (valueas?NSTextAttachment) {
                 let img = attachImg.image!
                 print(img)
                  imgs += [img]//最终处理 获取所有图片
  //                let attachmentWrapper = attachImg.fileWrapper! 
 //                imgs += [UIImage.init(data: attachmentWrapper.regularFileContents!)!]
             }
          })

实现富文本字体格式

 //加黑
 myHaq.texterTypings[NSAttributedStringKey.font.rawValue] = myHaq.isBold ? UIFont.boldSystemFont(ofSize: myHaq.fontSize) : UIFont.systemFont(ofSize: myHaq.fontSize)
 
 //斜体         
 myHaq.texterTypings[NSAttributedStringKey.obliqueness.rawValue] = sender.tintColor == colorSystem ? 0.25 : 0
 
 //下划线       
 myHaq.texterTypings[NSAttributedStringKey.underlineStyle.rawValue] = sender.tintColor == colorSystem ? 1 : 0
 
 //颜色
  myHaq.texterTypings[NSAttributedStringKey.foregroundColor.rawValue] = colors[tapG.view!.tag]
 
 //大小
  myHaq.texterTypings[NSAttributedStringKey.font.rawValue] = myHaq.isBold ? UIFont.boldSystemFont(ofSize: myHaq.fontSize) : UIFont.systemFont(ofSize: myHaq.fontSize)

save网络

         let markHtmlStr = myHaq.attStr.toHtmlStr!//转为html字符串
 
         varimgs = [UIImage]()
 
         myHaq.attStr.enumerateAttribute(NSAttributedStringKey.attachment, in:NSRange.init(location:0, length:myHaq.attStr.length), options:NSAttributedString.EnumerationOptions(rawValue:0), using: { (value, range, stop)in
 
             ifletattachImg = (valueas?NSTextAttachment) {
 
                letimg = attachImg.image!
 
                 print(img)
 
                 imgs += [img]//最终处理 获取所有图片
 
 //                let attachmentWrapper = attachImg.fileWrapper!
 
 //                imgs += [UIImage.init(data: attachmentWrapper.regularFileContents!)!]
 
             }
 
         })
 
         varimgIdx =0
         forstrinmarkHtmlStr.components(separatedBy:"><") {
             if str.contains("file:") {//截取转化后的htmlStr中的所有img标示
                 varstr1 = str
                 print(str1)
                 ifstr.contains("//Attachment") {
                     str1 = String(str1[str1.range(of: "img src")!.lowerBound..<str1.range(of: ".png")!.upperBound])
                 }else{//网络图片 修改时是后台传来的图片地址
                     str1 = String(str1[str1.range(of: "img src")!.lowerBound..<str1.range(of: ".jpg")!.upperBound])
                 }
                 print(str1)
                 
                    DCNetSir.upIconImg(imgs[imgIdx]) { [self] fileUrl in
                        markHtmlStr = markHtmlStr.replacingOccurrences(of: str1, with: "img src=\"\(fileUrl)")//用上传后的图片url替换html字符串里图片标识字符

                        upCount += 1
                        if imgs.count == upCount {//上传图片完成计数 上传所有后保存html字符串
                            saveDo()
                        }
                    }

                 imgIdx +=1
             }
         }