File I/O in Unity3D

最新推荐文章于 2025-08-21 10:46:25 发布

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本文介绍了一种在Unity3D中实现跨平台文件读写的方法，使用Application.persistentDataPath来确保代码能在不同平台上正常运行，如PC、Mac、iOS及Android等。

At the moment, there is no platform-independent way to save data inUnity3D.

If you want to open a file for reading or writing, you need to use the proper path. This code will do the trick and works on PC, Mac, iOS and Android:

       string fileName = "";
#if UNITY_IPHONE			
	string fileNameBase = Application.dataPath.Substring(0, Application.dataPath.LastIndexOf('/'));
	fileName = fileNameBase.Substring(0, fileNameBase.LastIndexOf('/')) + "/Documents/" + FILE_NAME;
#elif UNITY_ANDROID
	fileName = Application.persistentDataPath + "/" + FILE_NAME ;
#else
	fileName = Application.dataPath + "/" + FILE_NAME;
#endif
 
fileWriter = File.CreateText(fileName);
fileWriter.WriteLine("Hello world");
fileWriter.Close();

[edit]

Since Unity 3.3, it is no longer necessary to use platform-specific code for simple file I/O. Use Application.persistentDataPath to do the trick.

This code would replace the code above:

	string fileName = Application.persistentDataPath + "/" + FILE_NAME;
	fileWriter = File.CreateText(fileName);
	fileWriter.WriteLine("Hello world");
	fileWriter.Close();