Having trouble with an e-mail app picking up a file I want to send.

I'm using a Content Provider, overriding the openFile method.  It is getting called, but does not seem to find the file referred to in the uri.

The intent is called as follows:
i.putExtra(Intent.EXTRA_STREAM, Uri.parse("content://com.valmarc.ima/" foo +".jpg"));

Where openFileInput of foo was successful and indicated that there were bytes available to read

The content provider openFile method, which is called, has the following:
URI fileURI = URI.create("file://" +uri.getPath() +".jpg");
		File file = new File( fileURI);
		
also tried:
		File file - new File(uri.toString()); 
...

URI fileURI = URI.create("file://" +uri.getPath() +".jpg");
		File file = new File( fileURI);
		
also tried:
		File file - new File(uri.toString()); 
...

@Override
  public ParcelFileDescriptor openFile(Uri uri, String mode)
    throws FileNotFoundException {
    File f=new File(getContext().getFilesDir(), uri.getPath());
    
    if (f.exists()) {
      return(ParcelFileDescriptor.open(f,
                                        ParcelFileDescriptor.MODE_READ_ONLY));
    }

    throw new FileNotFoundException(uri.getPath());   
  }