原文链接：http://www.cnblogs.com/qq2351194611/p/11310159.html
一共两个脚本

一个保存的,一个读取的,下面会附上代码,网上都有,这个只是方便自己用,

这是保存的脚本,放到Editor文件夹下即可

using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
// <summary>
/// 保存所有的游戏场景,每个场景的数据都会保存到XML,网上都有,只是方便自己用.
/// </summary>
public class ExportSceneInfoToXML : Editor {

    [MenuItem("GameObject/ExportXML")]
    static void ExportXML()
    {
        string filepath = Application.dataPath + @"/StreamingAssets/my.xml";
        if (!File.Exists(filepath))
        {
            File.Delete(filepath);
        }
        XmlDocument xmlDoc = new XmlDocument();
        XmlElement root = xmlDoc.CreateElement("gameObjects");
        //遍历所有的游戏场景
        foreach (UnityEditor.EditorBuildSettingsScene S in UnityEditor.EditorBuildSettings.scenes)
        {
            //当场景启用
            if (S.enabled)
            {
                //得到场景的名称
                string name = S.path;
                //打开这个场景
                EditorApplication.OpenScene(name);
                XmlElement scenes = xmlDoc.CreateElement("scenes");
                scenes.SetAttribute("name", name);
                foreach (GameObject obj in Object.FindObjectsOfType(typeof(GameObject)))
                {
                    if (obj.transform.parent == null)
                    {
                        XmlElement gameObject = xmlDoc.CreateElement("gameObjects");
                        gameObject.SetAttribute("name", obj.name);

                        gameObject.SetAttribute("asset", obj.name + ".prefab");
                        XmlElement transform = xmlDoc.CreateElement("transform");
                        XmlElement position = xmlDoc.CreateElement("position");
                        XmlElement position_x = xmlDoc.CreateElement("x");
                        position_x.InnerText = obj.transform.position.x + "";
                        XmlElement position_y = xmlDoc.CreateElement("y");
                        position_y.InnerText = obj.transform.position.y + "";
                        XmlElement position_z = xmlDoc.CreateElement("z");
                        position_z.InnerText = obj.transform.position.z + "";
                        position.AppendChild(position_x);
                        position.AppendChild(position_y);
                        position.AppendChild(position_z);

                        XmlElement rotation = xmlDoc.CreateElement("rotation");
                        XmlElement rotation_x = xmlDoc.CreateElement("x");
                        rotation_x.InnerText = obj.transform.rotation.eulerAngles.x + "";
                        XmlElement rotation_y = xmlDoc.CreateElement("y");
                        rotation_y.InnerText = obj.transform.rotation.eulerAngles.y + "";
                        XmlElement rotation_z = xmlDoc.CreateElement("z");
                        rotation_z.InnerText = obj.transform.rotation.eulerAngles.z + "";
                        rotation.AppendChild(rotation_x);
                        rotation.AppendChild(rotation_y);
                        rotation.AppendChild(rotation_z);

                        XmlElement scale = xmlDoc.CreateElement("scale");
                        XmlElement scale_x = xmlDoc.CreateElement("x");
                        scale_x.InnerText = obj.transform.localScale.x + "";
                        XmlElement scale_y = xmlDoc.CreateElement("y");
                        scale_y.InnerText = obj.transform.localScale.y + "";
                        XmlElement scale_z = xmlDoc.CreateElement("z");
                        scale_z.InnerText = obj.transform.localScale.z + "";

                        scale.AppendChild(scale_x);
                        scale.AppendChild(scale_y);
                        scale.AppendChild(scale_z);

                        transform.AppendChild(position);
                        transform.AppendChild(rotation);
                        transform.AppendChild(scale);

                        gameObject.AppendChild(transform);
                        scenes.AppendChild(gameObject);
                        root.AppendChild(scenes);
                        xmlDoc.AppendChild(root);
                        xmlDoc.Save(filepath);

                    }
                }
            }
        }
        //刷新Project视图， 不然需要手动刷新哦
        AssetDatabase.Refresh();
    }
}

这是读取场景的脚本,挂在场景的空物体上即可

using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using UnityEngine;
using UnityEngine.SceneManagement;
/// <summary>
/// 动态获取每个场景,
/// </summary>
public class XML : MonoBehaviour {

    // Use this for initialization
    void Start()
    {

        //电脑和iphong上的路径是不一样的，这里用标签判断一下。
#if UNITY_EDITOR
        string filepath = Application.dataPath + "/StreamingAssets" + "/my.xml";
#elif UNITY_IPHONE
      string filepath = Application.dataPath +"/Raw"+"/my.xml";
#endif
        //如果文件存在话开始解析。
        if (File.Exists(filepath))
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(filepath);
            XmlNodeList nodeList = xmlDoc.SelectSingleNode("gameObjects").ChildNodes;
            foreach (XmlElement scene in nodeList)
            {
                //因为我的XML是把所有游戏对象全部导出， 所以这里判断一下只解析需要的场景中的游戏对象
                //JSON和它的原理类似
                if (!scene.GetAttribute("name").Equals("Assets/StarTrooper.unity"))
                {
                    continue;
                }

                foreach (XmlElement gameObjects in scene.ChildNodes)
                {

                    string asset = "Prefab/" + gameObjects.GetAttribute("name");
                    Vector3 pos = Vector3.zero;
                    Vector3 rot = Vector3.zero;
                    Vector3 sca = Vector3.zero;
                    foreach (XmlElement transform in gameObjects.ChildNodes)
                    {
                        foreach (XmlElement prs in transform.ChildNodes)
                        {
                            if (prs.Name == "position")
                            {
                                foreach (XmlElement position in prs.ChildNodes)
                                {
                                    switch (position.Name)
                                    {
                                        case "x":
                                            pos.x = float.Parse(position.InnerText);
                                            break;
                                        case "y":
                                            pos.y = float.Parse(position.InnerText);
                                            break;
                                        case "z":
                                            pos.z = float.Parse(position.InnerText);
                                            break;
                                    }
                                }
                            }
                            else if (prs.Name == "rotation")
                            {
                                foreach (XmlElement rotation in prs.ChildNodes)
                                {
                                    switch (rotation.Name)
                                    {
                                        case "x":
                                            rot.x = float.Parse(rotation.InnerText);
                                            break;
                                        case "y":
                                            rot.y = float.Parse(rotation.InnerText);
                                            break;
                                        case "z":
                                            rot.z = float.Parse(rotation.InnerText);
                                            break;
                                    }
                                }
                            }
                            else if (prs.Name == "scale")
                            {
                                foreach (XmlElement scale in prs.ChildNodes)
                                {
                                    switch (scale.Name)
                                    {
                                        case "x":
                                            sca.x = float.Parse(scale.InnerText);
                                            break;
                                        case "y":
                                            sca.y = float.Parse(scale.InnerText);
                                            break;
                                        case "z":
                                            sca.z = float.Parse(scale.InnerText);
                                            break;
                                    }
                                }
                            }
                        }

                        //拿到 旋转 缩放 平移 以后克隆新游戏对象
                        GameObject ob = (GameObject)Instantiate(Resources.Load(asset), pos, Quaternion.Euler(rot));
                        ob.transform.localScale = sca;

                    }
                }
            }
        }
    }

  
    void OnGUI()
    {
        if (GUI.Button(new Rect(0, 0, 200, 200), "XML WORLD"))
        {
           // Application.LoadLevel("JSONScene");
            SceneManager.LoadScene("1");
        }
        if (GUI.Button(new Rect(0, 200, 500, 200), "XML skfnakgn"))   //这几个按钮只是测试,一个就行了,不需要可以删除,亲们自己测试
        {
            // Application.LoadLevel("JSONScene");
            SceneManager.LoadScene("SampleScene");
        }
        if (GUI.Button(new Rect(0, 400, 500, 200), "XML dfdf"))
        {
            Application.LoadLevel("1234");
           // SceneManager.LoadScene("1234");
        }
    }
}