IndexOutOfRangeException：索引超出数组范围。 level_menu.Awake ()（位于 Assets/Scripts/level_menu.cs:20）

Question

脚本：关卡菜单

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class level_menu : MonoBehaviour
{
    public Button[] buttons;

    private void Awake()
    {
        int unlockedLevel = PlayerPrefs.GetInt("UnlockedLevel", 1);
        for (int i = 0; i < buttons.Length; i++)
        {
            buttons[i].interactable = false;
        }
        for (int i = 0; i < unlockedLevel; i++)
        {
            buttons[i].interactable = true;
        }

    }

    public void OpenLevel(int levelId)
    {
        string levelName = "level" + levelId;
        SceneManager.LoadScene(levelName);
    }
}

脚本：QuizManager

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class QuizManager : MonoBehaviour
{
    public List<QuestionAndAnswers> QnA;
    public GameObject[] options;
    public int currentQuestion;

    public GameObject Quizpanel;
    public GameObject GoPanel;

    public Text QuestionTxt;
    public Text ScoreTxt;

    int totalQuestions = 0;
    public int score;

    private void Start()
    {
        totalQuestions = QnA.Count;
        GoPanel.SetActive(false);
        generateQuestion();
    }

    public void retry()
    {
        UnlockNewLevel();
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
    }

    void GameOver()
    {
        Quizpanel.SetActive(false);
        GoPanel.SetActive(true);
        ScoreTxt.text = score + "/" + totalQuestions;
    }


    public void correct()
    {
        score += 1;
        QnA.RemoveAt(currentQuestion);
        generateQuestion();
    }

    public void wrong()
    {
        QnA.RemoveAt(currentQuestion);
        generateQuestion();
    }

    void SetAnswers()
    {
        for(int i = 0; i < options.Length; i++)
        {
            options[i].GetComponent<AnswerScript>().isCorrect = false;
            options[i].transform.GetChild(0).GetComponent<Text>().text = QnA[currentQuestion].Answers[i];

            if(QnA[currentQuestion].CorrectAnswer == i+1)
            {
                options[i].GetComponent<AnswerScript>().isCorrect = true;
            }
        }
    }

    void UnlockNewLevel()
    {
        if (SceneManager.GetActiveScene().buildIndex >= PlayerPrefs.GetInt("ReachedIndex"))
        {
            PlayerPrefs.SetInt("ReachedIndex", SceneManager.GetActiveScene().buildIndex + 1);
            PlayerPrefs.SetInt("UnlockedLevel", PlayerPrefs.GetInt("UnlockedLevel", 1) + 1);
            PlayerPrefs.Save();
        }
    }


    void generateQuestion()
    {
        if(QnA.Count > 0 )
        {
            currentQuestion = Random.Range(0, QnA.Count);

            QuestionTxt.text = QnA[currentQuestion].Question;
            SetAnswers();
        }
        else
        {
            Debug.Log("Out Of Question");
            GameOver();
        }
        


    }

}

我试了好几次了，还是有错误。这里我想尝试在下一个关卡中打开该关卡但是它与图中的语句有错误。我希望这个错误能在短时间内尽快得到解决，因为我还是不明白。

Answer 1

错误是因为您假设按钮的数量与

unlockedLevel

的数量相同

    private void Awake()
    {
        int unlockedLevel = PlayerPrefs.GetInt("UnlockedLevel", 1);
        for (int i = 0; i < buttons.Length; i++)
        {
            buttons[i].interactable = false;
        }
        for (int i = 0; i < unlockedLevel; i++)
        {
            buttons[i].interactable = true; // this will throw error if unlockedLevel count is more than buttons.
        }

    }

以下行似乎可以根据玩家的喜好进行自定义。

int unlockedLevel = PlayerPrefs.GetInt("UnlockedLevel", 1);

确保您的按钮数量也反映这些设置。