在streamingAssetsPath上读取和写入文件 [英] Read and Write file on streamingAssetsPath

问题描述

这就是我在android中读取文本文件的方式.

This is how i read my textfile in android.

#if UNITY_ANDROID
string full_path = string.Format("{0}/{1}",Application.streamingAssetsPath, path_with_extention_under_streaming_assets_folder);
// Android only use WWW to read file
        WWW reader = new WWW(full_path);
        while (!reader.isDone){}

        json = reader.text;

        // PK Debug 2017.12.11
        Debug.Log(json);
 #endif

这就是我从PC读取文本文件的方式.

and this is how i read my textfile from pc.

#if UNITY_STANDALONE
        string full_path = string.Format("{0}/{1}", Application.streamingAssetsPath, path_with_extention_under_streaming_assets_folder);
        StreamReader reader = new StreamReader(full_path);
        json = reader.ReadToEnd().Trim();
        reader.Close();
#endif

现在我的问题是我不知道如何在移动设备上写入文件，因为我是在独立机上这样做的

Now my problem is that i don't know how to write the file on mobile cause i do it like this on the standalone

#if UNITY_STANDALONE
        StreamWriter writer = new StreamWriter(path, false);
        writer.WriteLine(json);
        writer.Close();
 #endif

帮助任何人

这是我需要获取的我的streamingasset文件夹中的json文件

This is the json file that it is in my streamingasset folder that i need to get

推荐答案

现在我的问题是我不知道如何在移动设备上写入文件 因为我是在独立机上这样做的

Now my problem is that i don't know how to write the file on mobile cause I do it like this on the standalone

您无法保存到此位置. Application.streamingAssetsPath 是只读的.它是否可以在编辑器上运行都没有关系.它是只读的，不能用于加载数据.

从StreamingAssets读取数据:

IEnumerator loadStreamingAsset(string fileName)
{
    string filePath = System.IO.Path.Combine(Application.streamingAssetsPath, fileName);

    string result;

    if (filePath.Contains("://") || filePath.Contains(":///"))
    {
        WWW www = new WWW(filePath);
        yield return www;
        result = www.text;
    }
    else
    {
        result = System.IO.File.ReadAllText(filePath);
    }

    Debug.Log("Loaded file: " + result);
}

用法:

让我们从屏幕截图中加载"datacenter.json"文件:

Let's load your "datacenter.json" file from your screenshot:

void Start()
{
    StartCoroutine(loadStreamingAsset("datacenter.json"));
}

---

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保存数据:

---

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Saving Data:

保存在所有平台上均可使用的数据的路径为Application.persistentDataPath.在将数据保存到该路径之前，请确保在该路径内创建一个文件夹.您问题中的StreamReader可用于读取或写入此路径.

The path to save a data that works on all platform is Application.persistentDataPath. Make sure to create a folder inside that path before saving data to it. The StreamReader in your question can be used to read or write to this path.

保存到Application.persistentDataPath路径:

使用File.WriteAllBytes

从Application.persistentDataPath路径读取

使用File.ReadAllBytes.

请参见 此 帖子中提供了有关如何在Unity中保存数据的完整示例.

See this post for a complete example of how to save data in Unity.

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