【发布时间】：2021-11-24 12:30:41
【问题描述】：
我是一名初学者 Unity 开发人员。 我使用支持存储功能的资产制作了保存和加载功能。 常用的保存方式是在Application.personDataPath/文件夹下创建一个Json形式的文件。
问题在于它在 Unity 编辑器中运行良好，但当我将它构建为一个完整的游戏时就不行了。当我在目标文件夹 Application.persistantDataPath/ 中查找时，没有创建任何内容。
是否有您经常使用的解决方案或诊断方法？
更多信息，请看下面的代码。 我使用了从 Unity Asset Store 购买的名为“Corgi Engine”的资源。
设置文件路径
/// the method to use when saving and loading files (has to be the same at both times of course)
public static IMMSaveLoadManagerMethod saveLoadMethod = new MMSaveLoadManagerMethodBinary();
/// the default top level folder the system will use to save the file
private const string _baseFolderName = "/MMData/";
/// the name of the save folder if none is provided
private const string _defaultFolderName = "MMSaveLoadManager";
/// <summary>
/// Determines the save path to use when loading and saving a file based on a folder name.
static string DetermineSavePath(string folderName = _defaultFolderName)
{
string savePath;
// depending on the device we're on, we assemble the path
if (Application.platform == RuntimePlatform.IPhonePlayer)
{
savePath = Application.persistentDataPath + _baseFolderName;
}
else
{
savePath = Application.persistentDataPath + _baseFolderName;
}
#if UNITY_EDITOR
savePath = Application.dataPath + _baseFolderName;
#endif
savePath = savePath + folderName + "/";
return savePath;
}
创建目录并保存
/// <summary>
/// Save the specified saveObject, fileName and foldername into a file on disk.
public static void Save(object saveObject, string fileName, string foldername = _defaultFolderName)
{
string savePath = DetermineSavePath(foldername);
string saveFileName = DetermineSaveFileName(fileName);
// if the directory doesn't already exist, we create it
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
// we serialize and write our object into a file on disk
FileStream saveFile = File.Create(savePath + saveFileName);
saveLoadMethod.Save(saveObject, saveFile);
saveFile.Close();
}
转换为 Json 并保存
/// <summary>
/// Saves the specified object at the specified location after converting it to json
public void Save(object objectToSave, FileStream saveFile)
{
string json = JsonUtility.ToJson(objectToSave);
// if you prefer using NewtonSoft's JSON lib uncomment the line below and commment the line above
//string json = Newtonsoft.Json.JsonConvert.SerializeObject(objectToSave);
StreamWriter streamWriter = new StreamWriter(saveFile);
streamWriter.Write(json);
streamWriter.Close();
saveFile.Close();
Debug.Log(objectToSave.GetType());
}
【问题讨论】：
-
没用过StreamWriter，但是对于Unity我一般只用
System.IO.File.WriteAllText ( pathWhereToStore, JsonUtility.ToJson ( objectToSave ) )