unity StreamingAssets路径

原地址：http://blog.csdn.net/nateyang/article/details/8493791

我们在读写例如XML和TXT文件的时候，在电脑上和手机上路径不一致，造成了很多麻烦，其实有个简单的方法，在项目工程中新建一个StreamingAssets文件夹，把你的XML和TXT文件放到这里。

using UnityEngine;
using System.Collections;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
using System.Text;
using System;   

public class Reward
 {
   public int taskNo;  

   public Task[] task = new Task[];
   public Attribute attribute;
   public Reward () {}
   public struct Task
   {
      [XmlAttribute("taskReward")]
      public string taskReward{ get; set;}
      public Id id1;
      public Id id2;
      public Id id3;
   }
   public struct Id
   {
      [XmlAttribute("flag")]
      public bool flag{ get; set;}
      [XmlAttribute("name")]
      public string name{ get; set;}
      [XmlText()]
      public string description{get;set;}  

   }
}  

public class AchievementManager: MonoBehaviour {
   Reward reward ;
   FileInfo fileInfo;
   string _data;   

   void Start ()
   {
      reward = new Reward();
      LoadXML();
   }
   void LoadXML()
   {
      if(Application.platform == RuntimePlatform.IPhonePlayer)
      {
         fileInfo = new FileInfo(Application.dataPath + "/Raw/" + "Achievement.xml");
          StreamReader r = fileInfo.OpenText();
         _data = r.ReadToEnd();
         r.Close();
      }
      else if(Application.platform == RuntimePlatform.Android)
      {
         fileInfo = new FileInfo(Application.streamingAssetsPath+"/Achievement.xml");
         StartCoroutine("LoadWWW");
      }
      else
      {
         fileInfo = new FileInfo(Application.dataPath + "/StreamingAssets/"+ "Achievement.xml");
         StreamReader r = fileInfo.OpenText();
         _data = r.ReadToEnd();
         r.Close();
      }
      if(_data.ToString() != "")
      {
         reward = (Reward)DeserializeObject(_data);
      }
   }
   void OnGUI()
   {
       GUI.Label(new Rect(,,Screen.width,Screen.height),"data:"+_data);
       if(Input.GetKey(KeyCode.Space))
        {
            Application.Quit();
        }
   }  

    IEnumerator LoadWWW()
    {
        WWW www = new WWW(Application.streamingAssetsPath+"/Achievement.xml");
        yield return www;
        _data =www.text;
    }
   public void Save()
   {
      _data = SerializeObject(reward);
      StreamWriter writer;
      fileInfo.Delete();
      writer = fileInfo.CreateText();
      writer.Write(_data);
      writer.Close();
   }
   string UTF8ByteArrayToString(byte[] characters)
   {
      UTF8Encoding encoding = new UTF8Encoding();
      string constructedString = encoding.GetString(characters);
      return (constructedString);
   }   

   byte[] StringToUTF8ByteArray(string pXmlString)
   {
      UTF8Encoding encoding = new UTF8Encoding();
      byte[] byteArray = encoding.GetBytes(pXmlString);
      return byteArray;
   }   

   // Here we serialize our Reward object of reward
   string SerializeObject(object pObject)
   {
      string XmlizedString = null;
      MemoryStream memoryStream = new MemoryStream();
      XmlSerializer xs = new XmlSerializer(typeof(Reward));
      XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
      xs.Serialize(xmlTextWriter, pObject);
      memoryStream = (MemoryStream)xmlTextWriter.BaseStream;
      XmlizedString = UTF8ByteArrayToString(memoryStream.ToArray());
      return XmlizedString;
   }   

   // Here we deserialize it back into its original form
   object DeserializeObject(string pXmlizedString)
   {
      XmlSerializer xs = new XmlSerializer(typeof(Reward));
      MemoryStream memoryStream = new MemoryStream(StringToUTF8ByteArray(pXmlizedString));
      XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
      return xs.Deserialize(memoryStream);
   }
} 

注：其实每个平台的路径都可以是Application.streamingAssetsPath+"/Achievement.xml"。但是android平台必须要用WWW加载，其他的平台貌似也可以的，自己试试哈，呵呵~~~