Android - Setting wallpaper using Ion library

Question

I'm using Ion library for loading image into Imageview.

Ion.with(this)
   .load(imageURL)
   .intoImageView(imageview);

I want to set loaded image in wallpaper via Intent
this code :

Uri bmpUri = getLocalBitmapUri(imageview);
Intent emailIntent = new Intent(Intent.ACTION_ATTACH_DATA);
emailIntent.setDataAndType(bmpUri, "image/*");
startActivity(emailIntent);

This code worked in picasso library but in Ion library the Uri is empty.

What should i do for getting image Uri from Imageview?