how should I open and close my database properly

Question

I have an app which stores some data in a SQLite DB.Also I\'m doing a lot of query an requery in my app.I have about 15 activities in it.And almoust all use the DB to query for

Answer 1

There is a good answer from another question Best place to close database connection

"According to this post by a Google engineer, there's nothing wrong with leaving the database connection open:

Android made a deliberate design decision that is can seem surprising, to just give up on the whole idea of applications cleanly exiting and instead let the kernel clean up their resources. After all, the kernel needs to be able to do this anyway. Given that design, keeping anything open for the entire duration of a process's life and never closing it is simply not a leak. It will be cleaned up when the process is cleaned up.

So, for simplicity, I would extend the Application class to provide a single well-defined entry point for your code, and open the database connection in its onCreate(). Store the DB connection as a field in your Application, and provide an accessor method to make the connection available to rest of your code.

Then, don't worry about closing it."