#鸿蒙学习大百科#如何解析XML事件类型和元素深度？

import xml from '@ohos.xml';
import util from '@ohos.util'; // 需要使用util模块函数对文件编码
let strXml: string =
  '<?xml version="1.0" encoding="utf-8"?>' +
    '<note importance="high" logged="true">' +
    '<title>Play</title>' +
    '<lens>Work</lens>' +
    '</note>';
let textEncoder: util.TextEncoder = new util.TextEncoder();
let arrBuffer: Uint8Array = textEncoder.encodeInto(strXml); // 对数据编码，防止包含中文字符乱码
let that: xml.XmlPullParser = new xml.XmlPullParser(arrBuffer.buffer as object as ArrayBuffer, 'UTF-8');
let str: string  = '';
function func(name: xml.EventType, value: xml.ParseInfo): boolean {
  str = name + ' ' + value.getDepth(); // getDepth 获取元素的当前深度
  console.info(str)
  return true; //true:继续解析 false:停止解析
}
@Entry
@Component
struct Index {
  build() {
    Column() {
      Button("解析xml的属性和属性值").onClick(() => {
        let options: xml.ParseOptions = {supportDoctype:true, ignoreNameSpace:true, tokenValueCallbackFunction:func};
        that.parse(options);
      })
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}
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