Unity拼词游戏Text Asset运行时读取异常，数组长度为0求助

我正在为学校论文开发一款类似Bookworm的拼词游戏，遇到异常问题：运行时validWords数组长度始终为0，Unity返回的Text Asset处理后也出现这个问题。

相关代码 #

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

public class WordChecker : MonoBehaviour
{
    public string[] validWords;
    private Row row;
    private string word;
    private List<LetterDragTiles> droppedTiles = new List<LetterDragTiles>();
    

    public int EnemyMaxHealth;
    public int EnemyCurrentHealth;
    public int PlayerMaxHealth;
    public int PlayerCurrentHealth;
    public int amount;
    public int HostileAmount;

    [SerializeField] GameObject panel;

    private void Awake()
    {
        row = GetComponentInChildren<Row>();
    }

    private void Start()
    {
        LoadData();
        EnemyCurrentHealth = EnemyMaxHealth;
        PlayerCurrentHealth = PlayerMaxHealth;
    }

    private void LoadData()
    {
        TextAsset textFile = Resources.Load("Referentials") as TextAsset;
        string[] lines = textFile.text.Split("\n");
        Debug.Log(textFile.text);
        Debug.Log("Number of words in dictionary: " + validWords.Length);
        validWords = new string[lines.Length];
        for (int i =0; i < lines.Length; i++)
        {
            validWords[i] = lines[i].Trim();
        }
        

    }
    public void AddDroppedTile(LetterDragTiles tile)
    {
        droppedTiles.Add(tile);
        UpdateRow();
    }

    private void UpdateRow()
    {
        // Clear existing tiles from the row
        foreach (var tile in row.tiles)
        {
            tile.SetLetter(' ');
        }

        // Add letters from dropped tiles to the row
        for (int i = 0; i < droppedTiles.Count; i++)
        {
            row.tiles[i].SetLetter(droppedTiles[i].LetterBlock);
        }
    }

    public void SubmitRow(Row row)
    {
        word = row.word;
        
        Debug.Log("Word formed: " + word);
        if (string.IsNullOrEmpty(word))
        {
            Debug.Log("Please enter a word");
            return;
        }

        if (isValidWord(word))
        {

            EnemyCurrentHealth -= amount;
            if (EnemyCurrentHealth <= 0)
            {
                LoadScene();
            }
        }
        else
        {
            Debug.Log("No such word");
            PlayerCurrentHealth -= HostileAmount;
            if (PlayerCurrentHealth <= 0)
            {
                panel.SetActive(true);
            }
            
        }

    }

    private bool isValidWord(string word)
    {
        
        for (int i = 0; i < validWords.Length; i++)
        {
            string validWord = validWords[i].Trim();
            if (validWord == word.Trim())
            {
                Debug.Log("Word exists");
                return true;
            }
        }
        Debug.Log("The word doesn't exist in the index");
        return false;
    }

    public void LoadScene()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex+ 1);
    }
}

Debug输出 #

Number of words in dictionary: 0 UnityEngine.Debug:Log (object)
WordChecker:LoadData () (at Assets/Scripts/WordChecker.cs:43)
WordChecker:Start () (at Assets/Scripts/WordChecker.cs:33)

错误分析与修复方案 #

1. 日志打印时机错误 #

你当前的Debug.Log("Number of words in dictionary: " + validWords.Length);写在validWords = new string[lines.Length];之前，此时validWords还未被赋值（初始默认是长度为0的数组），所以必然输出0。

2. Text Asset分割逻辑缺陷 #

Windows系统的换行符是\r\n，仅用Split("\n")分割会导致部分行末尾带有\r字符，甚至如果文件有空行，会生成空元素，最终导致validWords包含无效内容或长度异常。

3. 缺少文件加载有效性校验 #

未判断Resources.Load是否成功加载文件，若文件路径或名称错误，会导致空引用错误，后续逻辑也会失效。

修复后的LoadData方法 #

private void LoadData()
{
    // 加载Text Asset并校验是否成功
    TextAsset textFile = Resources.Load("Referentials") as TextAsset;
    if (textFile == null)
    {
        Debug.LogError("无法加载Referentials文件，请检查Assets/Resources文件夹下是否存在该文件，且文件名完全匹配（大小写敏感）");
        return;
    }

    // 处理不同系统的换行符，同时移除空行
    string[] lines = textFile.text.Split(new[] {'\n', '\r'}, System.StringSplitOptions.RemoveEmptyEntries);
    Debug.Log("Text Asset原始内容：\n" + textFile.text);
    Debug.Log("分割后有效行数：" + lines.Length);

    // 初始化并赋值validWords
    validWords = new string[lines.Length];
    for (int i = 0; i < lines.Length; i++)
    {
        validWords[i] = lines[i].Trim();
    }

    // 在赋值完成后打印实际长度
    Debug.Log("字典中单词总数：" + validWords.Length);
}

额外排查步骤 #

• 确认Referentials文件必须放在Assets/Resources文件夹下，文件名完全匹配（注意大小写，比如不能写成referentials或Referentials.txt）。
• 检查Text Asset的内容：确保文件中有实际的单词，每行一个，没有大量空行。
• 验证文件编码：在Unity Inspector面板中选中该文件，设置编码为UTF-8，避免乱码导致分割异常。

内容的提问来源于stack exchange，提问作者RGVC