Unity-数据保存和加载

Json

使用Unity自带的JsonUtility

string dataString = JsonUtility.ToJson(data);
data = JsonUtility.FromJson<SaveData>(dataString);

XML

二进制

适用于玩家存档

使用BinaryFormatter序列化和反序列化二进制数据，使用FileStream创建或打开文件流

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

[Serializable]
public class SaveData {
    public int HP;
    public int atk;
};

public class JsonTest : MonoBehaviour
{
    [SerializeField] public SaveData data;

    private void OnGUI() 
    {
        string filePath = Application.persistentDataPath + "/game.save";
        if(GUILayout.Button("Save")) 
        {
            BinaryFormatter formatter = new BinaryFormatter();
            using(FileStream file = File.Create(filePath)) {
                formatter.Serialize(file, data);
            }
            Debug.Log("save at: " + filePath);
        }
        if(GUILayout.Button("Load")) 
        {
            if(File.Exists(filePath)) 
            {
                BinaryFormatter formatter = new BinaryFormatter();
                using(FileStream file = File.Open(filePath, FileMode.Open)) {
                    data = formatter.Deserialize(file) as SaveData;
                }
                Debug.Log("load at: " + filePath);
            }
        }
    }
}