[SOLVED] Query Files in a USB OTG using MediaStore fails

Query Files in a USB OTG using MediaStore fails

val projection = arrayOf( MediaStore.Files.FileColumns.DISPLAY_NAME )
val selection  = MediaStore.Files.FileColumns.RELATIVE_PATH + " = '/'"

val mediaStoreVolumes = MediaStore.getExternalVolumeNames(requireActivity())
mediaStoreVolumes.forEach { volume ->
    val uri    = MediaStore.Files.getContentUri(volume)
    val cursor = cr.query(uri, projection, selection, null, null)
    if (cursor != null) {
        while (cursor.moveToNext()) {
            Log.e("Volume: "+volume, "File: "+ cursor.getString(0))
        }
        cursor.close()
    }
}

The above code print file names in 'external_primary' and SDCARD. But for USB OTG it fails with exception:

 E  FATAL EXCEPTION: main
 Process: com.starsolutions.starfilemanager, PID: 10093
 java.lang.IllegalArgumentException: Volume a80d-7c6d not found

But the volume name is returned by MediaStore by MediaStore.getExternalVolumeNames()

Is it possible to list files in a USB OTG drive using MediaStore API?

Solution