Save SQLite database

In my application, I'm using a database to store some data, but if I close my app, my database will be deleted too. So I want to know if there is any mean to save my database and re-use it for the next launch of my app.

I use for the moment
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
in order to create my database.

Thanks for your help

---