November 2024
Intermediate to advanced
1256 pages
39h 14m
French
Content preview from Programmation iOS 14
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Chapitre 18. Photothèque et appareil photo
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Les photos et vidéos stockées auxquelles l'utilisateur accède par l'intermédiaire de l'appli Photos constituent la photothèque de l'appareil :
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La classe PHPickerViewController (nouvelle dans iOS 14) peut donner à l'utilisateur une interface pour explorer la photothèque et choisir une photo. Tu auras besoin de
import PhotosUI. -
Le cadre Photos, également connu sous le nom de PhotoKit, te permet d'accéder à la photothèque et à son contenu de manière programmatique - y compris la possibilité de modifier l'image d'une photo. Tu auras besoin de
import Photos.
L'appareil de l'utilisateur peut comporter un ou plusieurs appareils photo, et ton application peut vouloir permettre à l'utilisateur de prendre(capturer) une photo ou une vidéo :
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La classe UIImagePickerController peut donner à l'utilisateur une interface similaire à celle de l'appli Caméra, lui permettant de capturer des photos et des vidéos.
-
À un niveau plus profond, le cadre AV Foundation(chapitre 16) permet de contrôler directement le matériel de la caméra. Tu auras besoin de
import AVFoundation.
Les deux sujets sont liés, notamment parce qu'après avoir permis à l'utilisateur de capturer une image, tu la stockeras généralement dans la photothèque, tout comme le fait l'appli Appareil photo. Ce chapitre les traite donc ensemble.
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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.