Android:更新应用程序后保留内部文件 [英] Android: Keep internal files after updating app

问题描述

我见过很多实例，人们声称更新Android应用不会不删除其内部文件.但是，我正在分别使用 openFileInput()和 openFileOutput()读取和创建文件，效果很好，直到更新了应用程序，在该文件中显然无法找到文件已读取或已删除.

I've seen multiple instances where people claim that updating an Android app does not remove its internal files. However, I'm reading and creating a file using openFileInput() and openFileOutput() respectively, which works fine, until the app is updated where apparently the file can not be read, or is deleted.

在开发游戏时，我想避免使用 SharedPreferences .

As I'm developing a game, I would like to avoid SharedPreferences.

由于保存进度或多或少是强制性的，写到外部位置会是更好的选择吗?尽管该用户可以篡改该文件(它是序列化文件)，但不应.

As saving progress is more or less mandatory, would writing to an external location be a better alternative? The user shouldn't although be able to tamper with the file (its a serialisation).

否则，是否有办法在更新后保留内部文件?谢谢

Otherwise, is there a way to keep the internal file after updating? Thanks

推荐答案

为什么不为此目的使用SQLite数据库.除非您明确指示要更改或删除应用程序，否则更新应用程序将使数据库保持不变.

Why do you not use an SQLite database for this purpose. Updating the app will leave the database untouched unless you explicitely instruct your app to change or delete it.

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