如何将sprite保存到playerPref？

using UnityEngine;

public class SpriteSaver : MonoBehaviour
{
    private const string SpriteKey = "SavedSprite";

    void Start()
    {
        // 加载保存的sprite
        if (PlayerPrefs.HasKey(SpriteKey))
        {
            string spriteName = PlayerPrefs.GetString(SpriteKey);
            Sprite savedSprite = Resources.Load<Sprite>(spriteName);
            if (savedSprite != null)
            {
                GetComponent<SpriteRenderer>().sprite = savedSprite;
            }
        }
    }

    void Update()
    {
        // 保存当前的sprite
        if (Input.GetKeyDown(KeyCode.S))
        {
            Sprite currentSprite = GetComponent<SpriteRenderer>().sprite;
            if (currentSprite != null)
            {
                string spriteName = currentSprite.name;
                PlayerPrefs.SetString(SpriteKey, spriteName);
                PlayerPrefs.Save();
                Debug.Log("Sprite saved!");
            }
        }
    }
}