private String saveImage(Bitmap image) {
        String savedImagePath = null;
        
        String imageFileName = "JPEG_" + "FILE_NAME" + ".jpg";
        File storageDir = new File(            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
                           + "/YOUR_FOLDER_NAME");
        boolean success = true;
        if (!storageDir.exists()) {
        success = storageDir.mkdirs();
        }
        if (success) {
            File imageFile = new File(storageDir, imageFileName);
            savedImagePath = imageFile.getAbsolutePath();
            try {
                OutputStream fOut = new FileOutputStream(imageFile);
                image.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
                fOut.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        
            // Add the image to the system gallery
            galleryAddPic(savedImagePath);
            Toast.makeText(mContext, "IMAGE SAVED", Toast.LENGTH_LONG).show();
        }
        return savedImagePath;
    }
   
    private void galleryAddPic(String imagePath) {
        Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        File f = new File(imagePath);
        Uri contentUri = Uri.fromFile(f);
        mediaScanIntent.setData(contentUri);
        sendBroadcast(mediaScanIntent);
    }