The String List passed as a parameter to the share() method contains the paths of all the files you want to share.

It basically loops through the paths, adds them to Uri, and starts the Activity which can accept Files of this type.

public static void share(AppCompatActivity context,List<String> paths) {

      if (paths == null || paths.size() == 0) {
          return;
      }
      ArrayList<Uri> uris = new ArrayList<>();
      Intent intent = new Intent();
      intent.setAction(android.content.Intent.ACTION_SEND_MULTIPLE);
      intent.setType("*/*");
      for (String path : paths) {
              File file = new File(path);
              uris.add(Uri.fromFile(file));
      }
      intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
      context.startActivity(intent);
  }