一、先匯入Json 解析庫；

二、開始程式碼的編寫；

//名稱空間
using System.IO;
using System.Collections.Generic;
using LitJson;

//相關變數宣告：
    private static string mFolderName;
    private static string mFileName;
    private static Dictionary<string, string> Dic_Value = new Dictionary<string, string>();

    private static string FileName {
        get {
            return Path.Combine(FolderName, mFileName);
        }
    }

    private static string FolderName {
        get {
            return Path.Combine(Application.persistentDataPath, mFolderName);
        }
    }
 

//初始化方法 如有需要，可過載初始化方法
    public static void Init(string pFolderName, string pFileName) {
        mFolderName = pFolderName;
        mFileName = pFileName;
        Dic_Value.Clear();
        Read();
    }

//讀取檔案及json資料載入到Dictionary中
    private static void Read() {
        if(!Directory.Exists(FolderName)) {
            Directory.CreateDirectory(FolderName);
        }
        if(File.Exists(FileName)) {
            FileStream fs = new FileStream(FileName, FileMode.Open);
            StreamReader sr = new StreamReader(fs);
            JsonData values = JsonMapper.ToObject(sr.ReadToEnd());
            foreach(var key in values.Keys) {
                Dic_Value.Add(key, values[key].ToString());
            }
            if(fs != null) {
                fs.Close();
            }
            if(sr != null) {
                sr.Close();
            }
        }
    }
 

//將Dictionary資料轉成json儲存到本地檔案
    private static void Save() {
        string values = JsonMapper.ToJson(Dic_Value);
        Debug.Log(values);
        if(!Directory.Exists(FolderName)) {
            Directory.CreateDirectory(FolderName);
        }
        FileStream file = new FileStream(FileName, FileMode.Create);
        byte[] bts = System.Text.Encoding.UTF8.GetBytes(values);
        file.Write(bts,0,bts.Length);
        if(file != null) {
            file.Close();
        }
    }
 

三、舉例使用；

//判斷當前是否存在該key值
    public static bool HasKey(string pKey) {
        return Dic_Value.ContainsKey(pKey);
    }

//讀取string值
    public static string GetString(string pKey) {
        if(HasKey(pKey)) {
            return Dic_Value[pKey];
        } else {
            return string.Empty;
        }
    }

//儲存string值
    public static void SetString(string pKey, string pValue) {
        if(HasKey(pKey)) {
            Dic_Value[pKey] = pValue;
        } else {
            Dic_Value.Add(pKey, pValue);
        }
        Save();
    }