Sharing Files with a FileProvider
You want to share internal-storage files (see <<r5028>>) with another app,
without the bother of putting the data into a Cursor and creating a ContentProvider.
The ++FileProvider++ class allows you to make files available to another application,
usually in response to an ++Intent++.
It is simpler to set up than a Content Provider (<<r1558>>), but is actually a subclass of ++ContentProvider++.