Input/output Java Android

Question

How can I create a file(using Java for Android) in my Application data directory and write an integer in it and then use that integer? I think I would save it in .txt or .xml file.

If you only need to save an integer, why would you write it to a file instead of using [`SharedPreferences`](http://developer.android.com/guide/topics/data/data-storage.html#pref)? — Bryan Herbst, May 05 '14 at 13:56
what have you tried so far and what didn't work? If you haven't try anything yet, what's wrong with the ~zillion resources on the subject offered by google/android dev website? — njzk2, May 05 '14 at 13:57
Here : http://stackoverflow.com/questions/14376807/how-to-read-write-string-from-a-file-in-android — Shivam Verma, May 05 '14 at 13:57
Tanis I think it is useful but i would create a file and than use SharedPreferences? — user3578286, May 05 '14 at 14:00
If you use `SharedPreferences`, you don't need to worry about file IO at all. The framework will take care of the details of how and where the data is saved. — Bryan Herbst, May 05 '14 at 14:04

score 0 · Answer 1 · answered May 05 '14 at 13:58

0

If you would like to save the file to 'internal' memory (making the file only accessible to the app), then do the following:

 OutputStreamWriter outputWriter = new OutputStreamWriter(openFileOutput("somefile.xml", Context.MODE_PRIVATE));
 String fileContent = "<xml>xmlstuff</xml>";
 outputWriter.write(fileContent);
 outputWriter.close();

answered May 05 '14 at 13:58

bkane521

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but how can I create that somefile.xml? – user3578286 May 05 '14 at 14:03
that _is_ how you create somefile.xml – bkane521 May 05 '14 at 15:33

score 0 · Answer 2 · answered May 05 '14 at 14:00

You can use the methods openFileOutput, and openFileInput from the context, you should have access to this methods through your Activity.

You can check it on bellow link http://developer.android.com/reference/android/content/Context.html#openFileInput(java.lang.String)

Input/output Java Android

2 Answers2