November 2024
Intermediate to advanced
1256 pages
39h 14m
French
Content preview from Programmation iOS 14
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Chapitre 19. Contacts
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Les contacts de l'utilisateur constituent une base de données. L'utilisateur peut interagir avec cette base de données par l'intermédiaire de l'application Contacts. Ton code peut accéder à la base de données des contacts de l'utilisateur de manière programmatique par l'intermédiaire du cadre Contacts. Tu auras besoin de import Contacts. Une interface similaire à l'application Contacts pour permettre à l'utilisateur d'interagir avec la base de données de contacts à partir de ton application est fournie par le cadre Contacts UI. Tu devras import ContactsUI.
L'accès à la base de données des contacts nécessite l'autorisation de l'utilisateur. Tu utiliseras pour cela la classe CNContactStore. Pour connaître l'état actuel de l'autorisation, appelle la méthode de classe authorizationStatus(for:) avec un CNEntityType de .contacts(il s'agit d'une exigence curieuse, car .contacts est le seul CNEntityType !) Pour demander au système d'afficher l'alerte de demande d'autorisation si l'état est .notDetermined, appelle la méthode d'instance requestAccess(for:completionHandler:). L'Info.plist doit contenir un texte significatif que l'alerte de demande d'autorisation du système peut utiliser pour expliquer pourquoi ton application veut y accéder. La clé appropriée est "Privacy - Contacts Usage Description" (NSContactsUsageDescription). Voir ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.