Unity--Xml序列化和反序列化(排行榜实例)

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

public class XmlRecord : MonoBehaviour {

    [System.Serializable]   //让类变成在编辑器中可见
    
    public class MyScore:System.IComparable{    //继承IComparable接口可以变成可比较的类
        public int CompareTo(object obj)    //实现接口的方法
        {
            MyScore my = (MyScore)obj;
            if(this.Score < my.Score){
                return -1;
            }else{
                return 1;
            }
        }
        public string Name;
        public int Score;
        public MyScore(string n,int s){     //构造器
            Name = n;
            Score = s;
        }
        public MyScore(){
            
        }
    }
    public List<MyScore> myScore = new List<MyScore>();         //储存分数和姓名的链表
    private bool isChangeList = false;      //判断链表是否变化
    public void AddMyScore(string n,int s){         //往链表中添加数据
        MyScore my = new MyScore(n,s);
        if(myScore.Count < 10){         //排行榜只取前十位,所以在前十个加的时候一定可以直接加进去
            myScore.Add(my);
            isChangeList = true;
        }else{
            if(myScore[9].Score < my.Score){        //否则要和第十个比较大小,如果比第十个大,则替换他
                isChangeList = true;
                myScore[9] = my;
            }
        }
        myScore.Sort();         //排序

        myScore.Reverse();      //反转
    }
    void OnApplicationQuit(){       //当游戏退出的时候
        print("Quit");
        if(isChangeList){
            System.Type type = typeof(List<MyScore>);       //先获取要序列化的类型
            XmlSerializer xs = new XmlSerializer(type);     //list与序列化绑定
            FileStream fs = null;       //建立空的文件流
            try         //捕获异常
            {
                fs = new FileStream(Application.persistentDataPath + "/Score.xml", FileMode.Create);        //新建一个xml文件,如果存在就覆盖,不存在就创建
            }
            catch (System.Exception e)
            {
                Debug.LogError(e);
            }
            finally
            {
                StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8);      //使得xml字符编码为UTF8
                xs.Serialize(sw, myScore);      //进行序列化
                sw.Close();         //使用完关闭
                fs.Close();
            }
        }
        
    }
    // Use this for initialization
    void Start () {
        Init();
    }
    void Init(){
        Debug.Log(Application.persistentDataPath);      //安卓路径,关键点

        System.Type type = typeof(List<MyScore>);
        XmlSerializer xs = new XmlSerializer(type);

        if (File.Exists(Application.persistentDataPath + "/score.xml"))
        {
            print("存在文件");
            FileStream fs = null;
            try
            {
                fs = new FileStream(Application.persistentDataPath + "/Score.xml", FileMode.Open);      //打开文件获取文件流
            }
            catch (System.Exception e)
            {
                Debug.LogError(e.Message);
            }
            finally
            {
                myScore = (List<MyScore>)xs.Deserialize(fs);        //进行反序列化
                fs.Close();
            }

        }
        else
        {
            print("不存在文件");

            myScore.Add(new MyScore("未命名", 0));
            myScore.Add(new MyScore("未命名1", 1));
            myScore.Add(new MyScore("未命名2", 2));
            myScore.Add(new MyScore("未命名3", 3));
            FileStream fs = null;
            try
            {
                fs = new FileStream(Application.persistentDataPath + "/Score.xml", FileMode.Create);
            }
            catch (System.Exception e)
            {
                Debug.LogError(e);
            }
            finally
            {
                StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8);
                xs.Serialize(sw, myScore);
                sw.Close();
                fs.Close();
            }

        }
    }
    // Update is called once per frame
    void Update () {
        if(Input.GetMouseButtonDown(0)){
            string name = (char)Random.Range(48,97) + "";
            int score = Random.Range(0,100);
            AddMyScore(name,score);
            print("玩家 "+name+" 获得了 "+score);
        }
        if(Application.platform == RuntimePlatform.Android && (Input.GetKeyDown(KeyCode.Escape))){      //安卓的退出键
            Application.Quit();
        }
        if (Application.platform == RuntimePlatform.Android && (Input.GetKeyDown(KeyCode.Home)))        //安卓的Home键
        {
            Application.Quit();
        }
    }
}