How can I backup SharedPreferences to SD card?

Question

I saw in a lot of places that it\'s a problem to copy the SharedPreferences file to the sd card because every manufacturer place it somewhere else.

I want to backup

Answer 1

File ff = new File("/data/data/"
                            + MainActivity.this.getPackageName()
                            + "/shared_prefs/pref file name.xml");

                    Log.i("ffffdffffdffffdffffdd", ff.getPath() + "");

                    copyFile(ff.getPath().toString(), sdcard path/save file name.xml");

private void copyFile(String filepath, String storefilepath) {
    try {
        File f1 = new File(filepath);
        File f2 = new File(storefilepath);
        InputStream in = new FileInputStream(f1);

        OutputStream out = new FileOutputStream(f2);

        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
        System.out.println("File copied.");
    } catch (FileNotFoundException ex) {
        System.out.println(ex.getMessage());

    } catch (IOException e) {
        System.out.println(e.getMessage());
    }

}