统一.安卓.更新应用后保存文件消失

Unity. Android. Save files disappears after updating an App(统一.安卓.更新应用后保存文件消失)

问题描述

我正在 Unity 中创建非常简单的游戏，并且想要节省结果、时间等.我使用 System.IO，一切正常，但是当我从 '.apk' 更新我的应用程序时，所有结果都消失了.

I'm creating pretty simple game in Unity, and want to save results, time, etc. I use System.IO for it, and everything works fine, but when i update my app from '.apk' all the results disappear.

那么如何创建更新后不会被删除的文件呢?

So how can i create file, which won't be deleted after update?

public static void Save()
{
    string[] lines = new string[] {
        Language,
        First_Test.ToString(),
        Last_Test.ToString(),
        MakeLine(ref Attention_Results),
        MakeLine(ref Memory_Results),
        MakeLine(ref Reaction_Results),
        Attention_Best.ToString(),
        Memory_Best.ToString(),
        Reaction_Best.ToString(),
        LastSend.ToString(),
        UserName,
        FlyTime.ToString() };

    File.WriteAllLines(Application.persistentDataPath+ @"/Progres.save", lines);
}

推荐答案

根据您的需要，您可能希望更改潜在目录的顺序，甚至支持外部存储.如果是这样，请查看@LoungeKatt answer.

Depending on your needs you may want to change the order of the potential directories and even favor external storage. If so please look at @LoungeKatt answer.

如果您不想使用 PlayerPrefs(我认为这是最强大的可用解决方案)，您可以随时直接写入用户设备.

If you don't want to use the PlayerPrefs (which is I think the most robust available solution), you can always write directly into the user device.

警告:请记住，这样做远非完美的解决方案！用户可以删除和编辑您保存的文件，这与其说是真正的答案，不如说是一种解决方法.

WARNING: keep in mind doing it this way is far from a perfect solution ! The user can delete and edit the files you save and this is more of a workaround than a real answer.

无论如何，由于内部文件目录路径从一个Android设备更改为另一个，您可以使用一个小脚本找到它:

Anyway, since the internal files directory paths changes from one Android device to another, you can use a small script to find it :

public static string GetAndroidInternalFilesDir()
{
    string[] potentialDirectories = new string[]
    {
        "/mnt/sdcard",
        "/sdcard",
        "/storage/sdcard0",
        "/storage/sdcard1"
    };

    if(Application.platform == RuntimePlatform.Android)
    {
        for(int i = 0; i < potentialDirectories.Length; i++)
        {
            if(Directory.Exists(potentialDirectories[i]))
            {
                return potentialDirectories[i];
            }
        }
    }
    return "";
}

希望对你有帮助，

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