public static String[] getStoragePaths() {

         List<String> pathsList = new ArrayList<String>();

         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) {

             File externalFolder = Environment.getExternalStorageDirectory();

             if (externalFolder != null) {

                 pathsList.add(externalFolder.getAbsolutePath());

             }

         } else {

             StorageManager storageManager = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);

             try {

                 Method method = StorageManager.class.getDeclaredMethod("getVolumePaths");

                 method.setAccessible(true);

                 Object result = method.invoke(storageManager);

                 if (result != null && result instanceof String[]) {

                     String[] paths = (String[]) result;

                     StatFs statFs;

                     for (String path : paths) {

                         if (!TextUtils.isEmpty(path) && new File(path).exists()) {

                             statFs = new StatFs(path);

                             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {

                                 if (statFs.getBlockCountLong() * statFs.getBlockSizeLong() != ) {

                                     pathsList.add(path);

                                 }

                             }else{

                                 if (statFs.getBlockCount() * statFs.getBlockSize() != ) {

                                     pathsList.add(path);

                                 }

                             }

                         }

                     }

                 }

             } catch (Exception e) {

                 File externalFolder = Environment.getExternalStorageDirectory();

                 if (externalFolder != null) {

                     pathsList.add(externalFolder.getAbsolutePath());

                 }

             }

         }

         return pathsList.toArray(new String[pathsList.size()]);

     }