using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using LitJson;
using System.Text;
using System.IO;
using UnityEngine.UI;

public class Model
{
    public string key;
    public string value;
}


public class BtnNameJson : MonoBehaviour
{
    public static BtnNameJson Instance;

    public static string strPath;

    public List<Model> listModel = new List<Model>();

    public List<GameObject> listBtns = new List<GameObject>();
    private void Awake()
    {
        Instance = this;
        strPath = Application.dataPath + "/BtnName.json";

    }

    void Start()
    {
        Invoke("Load", 1);
    }
    public void Load()
    {
        StreamReader streamReader = new StreamReader(strPath);
        string str = streamReader.ReadToEnd();
        JsonData jsdata = JsonMapper.ToObject(str);

        listModel.Clear();
        for (int i = 0; i < jsdata.Count; i++)
        {
            Model m = new Model { key = jsdata[i]["key"].ToString(), value = jsdata[i]["value"].ToString() };
            listModel.Add(m);
        }

        for (int i = 0; i < listBtns.Count; i++)
        {
            foreach (var item in listModel)
            {
                if (item.key == listBtns[i].name)
                {
                    listBtns[i].transform.GetComponentInChildren<InputField>().text = item.value;
                }
            }
        }

    }

    public void Save()
    {
        listModel.Clear();
        for (int i = 0; i < listBtns.Count; i++)
        {
            Model m = new Model() { key = listBtns[i].name, value = listBtns[i].transform.GetComponentInChildren<InputField>().text };
            listModel.Add(m);
        }

        //找到当前路径
        FileInfo file = new FileInfo(strPath);
        //判断有没有文件，有则打开文件，，没有创建后打开文件
        StreamWriter sw = file.CreateText();
        //ToJson接口将你的列表类传进去，，并自动转换为string类型
        string json = JsonMapper.ToJson(listModel);
        //将转换好的字符串存进文件，
        sw.WriteLine(json);
        //注意释放资源
        sw.Close();
        sw.Dispose();

    }

}

用

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class BtnChangeText : MonoBehaviour
{
    InputField inp;
    void Start()
    {
        BtnNameJson.Instance.listBtns.Add(gameObject);

        inp = GetComponentInChildren<InputField>();
        inp.onEndEdit.AddListener((string value) =>
        {
            BtnNameJson.Instance.Save();
        });
    }

   
}