Android : Save Image from res/drawable to Image Gallery Android

I want to Save Image from res/drawable to Image Gallery. I am using following code but it is doing nothing.



What is the wrong with my code ? String Drawable stands for Image Name which is there in drawable folder.

        File direct = new File(Environment.getExternalStorageDirectory()
                + "/Images");

        if (!direct.exists()) {
            direct.mkdirs();
        }

        ByteArrayOutputStream bos = null;
        FileOutputStream fos = null;

        try {
            Bitmap bitmap = BitmapFactory.decodeResource(
                    context.getResources(),
                    context.getResources().getIdentifier(
                            "@drawable/" + Drawable, "drawable",
                            context.getPackageName()));

            bos = new ByteArrayOutputStream();
            bitmap.compress(CompressFormat.JPEG, 95, bos);

            byte[] bitmapdata = bos.toByteArray();
            fos = new FileOutputStream(direct + "/" + "IMG-" + CurrentDateTime
                    + ".jpg");
            fos.write(bitmapdata);
        } catch (Exception e) {
            Log.e("Internal Image Save Error->", e.toString());
        } finally {
            try {
                if (bos != null) {
                    bos.close();
                }
                if (fos != null) {
                    fos.close();
                    fos.flush();
                }
            } catch (IOException ignored) {
                Log.e("Internal Image Save Error->", ignored.toString());
            }
        }