Android Question Need directions... new app idea, but no idea how to ...

Cableguy

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Longtime User
Hi guys...

So first of all, some context...
I got a new xcover 6 pro phone provided by my boss and for professional use...
In my line of work, we work with a big company but with several concurrent projects, and thus, several different persons as "liason" agents.
It got myself thinking...
The default contacts app is somewhat basic, and I couldn't find any other that does what I am aiming to do...
So, I will try to build it myself, but some major questions arise...

How are contact information stored?
I rekon a database is used, but can I create a concurrent database?
What about syncing with Google account?
Can I save by code at least the basic info so that even if I get a new phone, I will still have those basic contact info? How?
And then, how to redirect those contact information to the corresponding apps, like mail, phone (making a call from contacts and retrieving info from contacts when an incoming call happens),
And also messaging... how do I "tap" into the existing conversations?

My aim would be to create a kind of per-company rollerdex...

I'm guessing most of it will be passing by intents... but this is just a guess...

So, any pointers are welcomed
 
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