How to invoke Android media scanner for vendor provided external SD card, not the one obtained via getExternalStorage()

Question

My app allows user to save files on an external SD card besides the getExternalStorage() path. I understand that Android does not have notion of external SD cardas such but

Answer 1

For Api 8 and above you can use this

 MediaScannerConnection.scanFile(this,
      new String[] { file.toString() }, null,
      new MediaScannerConnection.OnScanCompletedListener() {
  public void onScanCompleted(String path, Uri uri) {
      Log.i("ExternalStorage", "Scanned " + path + ":");
      Log.i("ExternalStorage", "-> uri=" + uri);
  }
 });

This scans only an individual file and you can give any path here, including alternative external storage.