unity3d读写txt

      记录一下昨天用到的技术点：基于android平台unity3d读写txt。功能点主要是单机手游的多账号（帐号对应保存游戏数据）的动态创建与删除、排行榜等功能。将联网版改为单机版之后，本应将用户注册排行功能一并去掉才是的。但我有坑哥的策划，唯有一边心中默念草泥马，一边拼命敲代码了。

       下面将些关键代码粘贴出来，以后不准还有这样的悲情故事发生。

　　　　1、CreateOrOPenFile(Application.persistentDataPath, "Counter.txt", info);

           2、GlobalVariable.counterList = LoadFile(Application.persistentDataPath, "Counter.txt");

　　　　3、创建或者打开txt          

   void CreateOrOPenFile(string path, string name, string info)
    {

        StreamWriter sw;
        FileInfo fi = new FileInfo(path + "//" + name);
        if (!fi.Exists)
        {
            sw = fi.CreateText();
        }
        else
        {
            sw = fi.AppendText();
        }
        sw.WriteLine(info);
        sw.Close();
　　
　　　　　//其实Close方法内部已经实现了Dispose方法
        sw.Dispose();
    }

 　　　　4、读取txt文本

   List<string> LoadFile(string path, string name)
    {
        StreamReader sr = null;
        try
        {
            sr = File.OpenText(path + "//" + name);
        }
        catch
        {
            return null;
        }
        string lineInfo;
        List<string> lineInfoList = new List<string>();
        while ((lineInfo = sr.ReadLine()) != null)
        {
            lineInfoList.Add(lineInfo);
        }
        sr.Close();
        return lineInfoList;
    }

　　　　

　　　　5、修改txt中某一行，觉得自己用这个方法不好，有大牛给点建议？

    void ConfirmDel(GameObject goName)
    {
        string name = goName.name;
        switch (name)
        {
             //取消删除
            case "CancelButton":
                goDialogPanel.transform.localPosition = new Vector3(1000f, -40f, 0);
                goUIPanel.SetActive(true);
                break;

             //确认删除
            case "ConfirmButton":
                GlobalVariable.counterList.Clear();
                GlobalVariable.counterList = LoadFile(Application.persistentDataPath, "Counter.txt");
                string nickName = "";
                string parName = GlobalVariable.strName;
                switch (parName)
                {
                    case "C0":
                        nickName = GlobalVariable.counterList[0].Split(',')[0];
                        GlobalVariable.counterList.RemoveAt(0);
                        break;
                    case "C1":
　　　　　　　　　　　　　　 //加if判断的原因（其实要结合项目才能理解的）：若删除排列中间的某一个，string类型的泛型集合元素的下标已经改变了，但是游戏对象.name还是不变的。所以gameObject对应的原集合的前一个下标即是它现下标
                        if (GlobalVariable.counterList.Count < 2)
                        {
                            GlobalVariable.counterList.RemoveAt(GlobalVariable.counterList.Count - 1);
                        }
                        else
                        {
                            GlobalVariable.counterList.RemoveAt(1);
                        }
                       nickName = GlobalVariable.counterList[0].Split(',')[0];
                        break;
                    case "C2":
                        if (GlobalVariable.counterList.Count < 3)
                        {
                            GlobalVariable.counterList.RemoveAt(GlobalVariable.counterList.Count - 1);
                        }
                        else
                            
                       ｛
　　　　　　　　　　　　　　　　　GlobalVariable.counterList.RemoveAt(2);
　　　　　　　　　　　　　  ｝                                    
                        nickName = GlobalVariable.counterList[0].Split(',')[0];
                        break;
                    case "C3":
                        if (GlobalVariable.counterList.Count < 4)
                        {
                            GlobalVariable.counterList.RemoveAt(GlobalVariable.counterList.Count - 1);
                        }
                        else
                            GlobalVariable.counterList.RemoveAt(3);
                        nickName = GlobalVariable.counterList[0].Split(',')[0];
                        break;
                    case "C4":
                        if (GlobalVariable.counterList.Count < 5)
                        {
                            GlobalVariable.counterList.RemoveAt(GlobalVariable.counterList.Count - 1);
                        }
                        else
                            GlobalVariable.counterList.RemoveAt(4);
                        nickName = GlobalVariable.counterList[0].Split(',')[0];
                        break;
                    default:
                        break;
                }
                File.Delete(Application.persistentDataPath + "//" + "Counter.txt");
                if (GlobalVariable.counterList.Count != 0)
                {
                    for (int i = 0; i < GlobalVariable.counterList.Count; i++)
                    {
                       //重写txt
                        CreateOrOPenFile(Application.persistentDataPath, "Counter.txt", GlobalVariable.counterList[i]);
                    }
                }
                goDialogPanel.transform.localPosition = new Vector3(1000f, -40f, 0);
                go.transform.FindChild(GlobalVariable.strName).gameObject.SetActive(false);
                break;
            default:
                break;
        }
        if (GlobalVariable.counterList.Count < 5)
        {

            goNewCounter.SetActive(true);
        }
        else
        {
            goNewCounter.SetActive(false);
        }
        if (GlobalVariable.counterList == null)
        {
            PlayerPrefs.DeleteKey("v");
            PlayerPrefs.Save();
        }
        goUIPanel.SetActive(true);

       //重新排列
       go.GetComponent<UIGrid>().repositionNow = true;
    }