File Storage
Your photo needs more than a place on the screen. Full-size pictures are too large to stick inside a SQLite database, much less an Intent. They will need a place to live on your device’s filesystem.
Luckily, you have a place to stash these files: your private storage. Each application on an Android device has a directory in the device’s sandbox. Keeping files in the sandbox protects them from being accessed by other applications or even the prying eyes of users (unless the device has been rooted, in which case the user can get to whatever they like).
Your crime database is actually a file within this private sandbox. The Room library knows how to find and access this file to provide you with a working database that ...
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