Question

My application is mostly c++ (using NDK) so I use fopen, fwrite, etc. standard functions to create and game save files and write into them.

When I use fopen("game.sav", "wb"), it appears that it’s being created at path

/data/user/10/com.my.game/files/game.sav.

My app is multi-user. So I want to have a separated folders where users store their save-files. And instead of the path above I’d like to have paths like

/data/user/10/com.my.game/files/user0/game.sav,

/data/user/10/com.my.game/files/user1/game.sav, etc

My app’s frontend is in Java, and when new user is being registered, I want to create a folder /data/user/10/com.my.game/files/user0/. But I don’t know how to do it, because

final File newDir = context.getDir("user0", Context.MODE_PRIVATE);

results in path being created at /data/user/10/com.my.game/app_user0 that’s a different path.

It is possible to create folders at /data/user/10/com.my.game/files/ and how ?

Answer 1

Simple way to do it, this code you can change it suit many conditions. If you know that your path is different from what getFilesDir() gets you then you can create a File first of all by using a path that you know and the last 2 lines of code will still be same.

    File file = this.getFilesDir(); // this will get you internal directory path
    Log.d("BLA BLA", file.getAbsolutePath());
    File newfile = new File(file.getAbsolutePath() + "/foo"); // foo is the directory 2 create
    newfile.mkdir();

And if you know the path to “files” directory:

     File newfile2 = new File("/data/data/com.example.stackoverflow/files" + "/foo2");
    newfile2.mkdir();

Both code works.

Proof of Working: