android - FileProvider and secondary external storage

Question

How can I serve files from the SECONDARY external storage using the FileProvider?

The current implementation of the FileProvider handles only the first directory returned by ContextCompat.getExternalFilesDirs

...    
} else if (TAG_EXTERNAL_FILES.equals(tag)) {
   File[] externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null);
   if (externalFilesDirs.length > 0) {
       target = externalFilesDirs[0];
   }
}
...

It seems, that there is no way to define a <path> entry for the FileProvider, that matches the secondary external storage path...

Answer 1

And the answer is... FileProvider does not support that. With Android 7 this is even more an issue, due to deprecation of the file:// Uri scheme.

I issued a bug report.