Unity 5 PlayerPrefs

Question

我试过很多方法，但我真的无法理解。这是我制作的关卡锁定/解锁系统。在我的电脑上工作完美，但当我在我的Android智能手机上测试它没有任何作用。为什么？如果我将使用PlayerPrefs将工作？我应该如何使用PlayerPrefs？因为我在很多方面尝试过而没有结果。

这是我的剧本：

using UnityEngine;
using System.Collections;

public class LevelLockSystem : MonoBehaviour {

    public GameObject unlockLevel2;
    public GameObject unlockLevel3;
    public GameObject unlockLevel4;
    public GameObject unlockLevel5;
    public GameObject unlockLevel6;
    public GameObject unlockLevel7;
    public GameObject unlockLevel8;
    public GameObject unlockLevel9;
    public GameObject unlockLevel10;

    public void Start()
    {

    }

    public void LockAllLevels()
    {
        unlockLevel2.SetActive(true);
        unlockLevel3.SetActive(true);
        unlockLevel4.SetActive(true);
        unlockLevel5.SetActive(true);
        unlockLevel6.SetActive(true);
        unlockLevel7.SetActive(true);
        unlockLevel8.SetActive(true);
        unlockLevel9.SetActive(true);
        unlockLevel10.SetActive(true);
    }
    public void UnlockLevel2()
    {
        unlockLevel2.SetActive(false);
    }
    public void UnlockLevel3()
    {
        unlockLevel3.SetActive(false);
    }
    public void UnlockLevel4()
    {
        unlockLevel4.SetActive(false);
    }
    public void UnlockLevel5()
    {
        unlockLevel5.SetActive(false);
    }
    public void UnlockLevel6()
    {
        unlockLevel6.SetActive(false);
    }
    public void UnlockLevel7()
    {
        unlockLevel7.SetActive(false);
    }
    public void UnlockLevel8()
    {
        unlockLevel8.SetActive(false);
    }
    public void UnlockLevel9()
    {
        unlockLevel9.SetActive(false);
    }
    public void UnlockLevel10()
    {
        unlockLevel10.SetActive(false);
    }

}