Regarding Contacts Framework in Swift : Having no experience in coding and having an app idea 6 months ago,I am watching swift programmatically rather than using the storyboard.  So I have a question hoping some folks here can answer, and based on my limited search ability on what key words to use. I haven't been able to answer this in my research and its regarding the contacts framework. When the app has access to your contacts, and you need those contacts to populate a pickerview, does it pull the contacts to the firebase db(what i am using) and fetch those contacts to populate the pickerview, or does it do it within the phone(maybe coredata?) any advice or guidance would be greatly appreciated. And if does and I can use coredata, I can use it hand in hand with firebase? Or does it even pull and store somewhere? I'd like my users to be able to select which contacts they want to add to the app. Thank you in advance.
