Send to file://url - what does it mean?

[鸞鸞鸞]

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[ghisler(Author)]

There are two ways to pass files to other apps:
1. As a reference to the local file system - this uses the file:// url, e.g. file:///storage/emulated/0/file.txt
2. As data provided by the sending app via a content provider. This uses the content:// URL, e.g. content://providername/path/file.txt

Some older apps only accept file URLs, some newer apps only content URLs, so I give the user the option to choose.