Question

I am writing audio data as in amr file format in sdcard.

    File file = new File(dir, "test.amr");
    try {
        FileOutputStream f = new FileOutputStream(file);
        f.write(audioData);
        f.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

Its working properly but my problem is it shows in other applications as well like in default media player of android OS.

My question is how can write a file on sdcard which is only accessible to my application.Not to other applications on device.

Thanks.

Answer 1

That’s not possible, all files on SD card are accessible to all apps.

To keep files private, create them in application’s local directory.
Location of app’s private folder is determined by:

String dir = getPackageManager().getPackageInfo("com.example.app", 0).applicationInfo.dataDir;

Other option: make empty “.nomedia” file in your folder on SD card, then files inside won’t (should not) show in media players.