在哪里放置设置文件？

Question

Okay, so I've got a couple of data files for an android app. The files contain lists of items and variables for each, so I don't think using the "Key-Value" method would work very well.

I originally had the files in the "raw" folder, but then I learned that you can't write to that location and this file does need to be updatable. I now have it reading and writing from (afaik) the root directory of my program's internal storage (File file = new File(getApplicationContext().getFilesDir(), "settings.txt"); ), and that works alright. But what I'd like to be able to do is have a default settings file that is placed when I install/update the app.

For example, when I was using the "raw" folder, I could put a file in the "raw" directory on my computer and have it show up when I run the app. Can I get this behaviour with a location my app can also write to, and if so, how?

Edit: OK to try and clarify, what I'm looking for is a location that I can a) have my app read and write data to on my phone b) can have a file put in that location when the app is installed/updated, like you can put a file in the raw folder on your PC and have your app able to read it.

I just want to know if this is possible.

Answer 1

As far as I know, you can create a folder within your application's root directory to save your files to. From there, you should be able to create, read, update, and delete files.

File dir = new File(getApplicationContext().getFilesDir(),"directory name");
if(!dir.exists()) {
    try {
        dir.mkdir();
    } catch (SecurityException e) {
        //deal with exception
    }
}
File settings = new File(dir, "settings.txt");
if(!settings.exists()) {
    try {
        settings.createNewFile();
    } catch (SecurityException e) {
        //deal with exception
    }
}

Maybe this will work for you?

android may throw it's own form of SecurityException

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I would suggest you create a Java class that creates, reads, and writes to a settings.txt file. If you want to have that class also create a default settings.txt file and make it write that file to the folder of choice if a settings.txt file doesn't exist already.