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I’m following a simple tutorial that creates a class which extends from SQLiteOpenHelper and creates a DB with one table and 5 rows.
OK, but I need to understand some more about android Sqlite databases. For example, what happens if the app is closed or the phone is off? Is the database deleted?
Of course the database isn’t deleted. I assume you’re doing it the “proper” way. In which case the database is persistent. (of course if you choose to create a database in a temporary directory or something similar then its not going to work properly).
Think of it like this. The database is basically a text file. What you’re doing to the database is modifying the contents of that text file (ok its a little bit more complicated in real life, but its a good way to think about it).
Once you’ve made a change to the database (e.g. added a row) the database file is saved onto the disk thus persisting it. If the phone is turned off or the app is quit then the database file persists and you can keep connecting to it in the future.