Unity3D读取XML文档信息

using System;
using UnityEngine;
using System.IO;
using System.Xml;
using System.Linq;
using System.Text;
using System.Collections.Generic;


namespace Address
{
    /// <summary>
    /// 地址数据
    /// </summary>
    public class AddressData
    {
       

        
        

        /// <summary>
        ///当前城市ID
        /// </summary>
        public static string _nowProvinceId;


        /// <summary>
        /// 所有省名字
        /// </summary>
        public static List<string> allProvinceName = new List<string>();

        
        /// <summary>
        /// 所有城市id
        /// </summary>
        public List<string> allCityId = new List<string>();

        ///<summary>
        ///所有城市名字
        ///</summary>
        public List<string> allCityName = new List<string>();

        public static string localUrl = Application.dataPath + "/XMLFile1.xml";

        /// <summary>
        /// 加载xml文档
        /// </summary>
        /// <returns></returns>
        public static  XmlDocument ReadAndLoadXml()
        {
            XmlDocument doc = new XmlDocument();
            Debug.Log("加载xml文档");
            doc.Load(localUrl);
            return doc;

        }



        /// <summary>
        /// 从本地加载xml并获取所有省的名字
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static List<string> GetAllProvinceName()
        {
            List<string> _allProvinceName = new List<string>();

            XmlDocument xmlDoc = ReadAndLoadXml();

            //所有province节点
            XmlNode provinces = xmlDoc.SelectSingleNode("province");

            foreach (XmlNode province in provinces)
            {
                XmlElement _province = (XmlElement)province;
                
                //所有provinceName添加到列表
                allProvinceName.Add(_province.GetAttribute("name"));
                
            }
            Debug.Log("所有省数目"+allProvinceName.Count);
            _allProvinceName = allProvinceName;

            return _allProvinceName;
        }

        /// <summary>
        /// 根据当前省ID返回当前省的所有城市名
        /// </summary>
        /// <param name="nowProvinceId"></param>
        /// <returns></returns>
        public static List<string> GetAllCityNameByNowProvinceId(string nowProvinceId)
        {

            List<string> nowAllCityName = new List<string>();

            XmlDocument xmlDoc = ReadAndLoadXml();

            //所有province节点
            XmlNode provinces = xmlDoc.SelectSingleNode("province");

            foreach (XmlNode province in provinces)
            {
                XmlElement _province = (XmlElement)province;
                
                //当前城市id
                if (nowProvinceId == _province.GetAttribute("id"))
                {
                    foreach (XmlElement city in _province.ChildNodes)
                    {
                        XmlElement _city = (XmlElement)city;
                        //当前城市的所有cityName添加到列表
                        nowAllCityName.Add(_city.GetAttribute("name"));
                    }
                }

            }

            return nowAllCityName;
        }

        /// <summary>
        /// 根据省的ID返回省的名字
        /// </summary>
        /// <param name="provinceId"></param>
        /// <returns></returns>
        public static string GetProvinceName(string provinceId)
        {
            string _provinceName = "";

            XmlDocument xmlDoc = ReadAndLoadXml();

            //所有province节点
            XmlNode provinces = xmlDoc.SelectSingleNode("province");

            foreach (XmlNode province in provinces)
            {
                XmlElement _province = (XmlElement)province;


                if (provinceId == _province.GetAttribute("id"))
                {
                    //获取实际省名
                    _provinceName= _province.GetAttribute("name");

                }
            }


            return _provinceName;
        }

        /// <summary>
        /// 根据城市ID返会城市名字
        /// </summary>
        /// <param name="cityId"></param>
        /// <returns></returns>
        public static string GetCityName(string cityId)
        {
            string cityName="";

            XmlDocument xmlDoc = ReadAndLoadXml();

            //所有province节点
            XmlNode provinces = xmlDoc.SelectSingleNode("province");

            foreach (XmlNode province in provinces)
            {
                XmlElement _province = (XmlElement)province;


                if (_nowProvinceId == _province.GetAttribute("id"))
                {
                    foreach (XmlElement city in _province.ChildNodes)
                    {
                        XmlElement _city = (XmlElement)city;

                        if (cityId == _city.GetAttribute("id"))
                        {
                            //获取实际城市名
                            cityName = _city.GetAttribute("name");
                        }
                    }

                }
            }
            return cityName;
        }
    }
  
}

using UnityEngine;

using System.Collections;
using System.Collections.Generic;
using Address;

public class FinalTest : MonoBehaviour {

	// Use this for initialization
	void Start () 
    {
        List<string> allp = new List<string>();
        allp = AddressData.GetAllProvinceName();
        
        Debug.Log(AddressData.allProvinceName.Count);
        Debug.Log(allp.Count);

        List<string> allCity = new List<string>();
        allCity = AddressData.GetAllCityNameByNowProvinceId("01");
        Debug.Log(allCity.Count);
        for (int i = 0; i < allCity.Count; i++)
        {
            Debug.Log(allCity[i]);
        }

        string a = AddressData.GetProvinceName("02");
        Debug.Log(a);
	}

    // Update is called once per frame
    void Update() 
    {
	
	}
}

<?xml version="1.0" encoding="utf-8"?>
<province>

  <province id ="01" name="江苏">
    <city id ="01" name ="南京"></city>
    <city id ="02" name ="镇江"></city>
    <city id ="03" name ="南通"></city>
  </province>
  <province id ="02" name="河南">
    <city id ="01" name ="郑州"></city>
    <city id ="02" name ="开封"></city>
    <city id ="03" name ="洛阳"></city>
  </province>
  

</province>

（编辑：李大同）

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