November 2024
Intermediate to advanced
1256 pages
39h 14m
French
Content preview from Programmation iOS 14
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Chapitre 21. Les cartes
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Ton appli peut imiter l'appli Maps, en affichant une interface de carte et en plaçant des annotations et des superpositions sur la carte. Les classes correspondantes sont fournies par le cadre Map Kit. Tu devras import MapKit. Les types qui décrivent les emplacements en termes de latitude et de longitude, dont les noms commencent par "CL", proviennent du cadre Core Location, mais tu n'auras pas besoin de l'importer explicitement si tu importes déjà le cadre Map Kit.
Vues de la carte
Une carte est affichée par l'intermédiaire d'une sous-classe d'UIView, une MKMapView. Tu peux instancier une MKMapView dans le code comme n'importe quelle autre vue. Sinon, dans l'éditeur nib, la bibliothèque Objects contient un objet MKMapView que tu peux faire glisser dans ton interface au fur et à mesure que tu la conçois ; il se peut que tu aies à lier manuellement le framework MapKit (dans la phase de construction Link Binary With Libraries de la cible de l'application) pour éviter que l'application ne se bloque au moment du chargement du nib.
Une carte a un type, qui est généralement l'un des suivants (MKMapType) :
-
.standard -
.satellite -
.hybrid
(Un autre type MKMapType, .mutedStandard, atténue les éléments de la carte pour que tes ajouts à la vue de la carte ressortent).
Affichage d'une région
La zone affichée sur la carte est sa ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.