November 2024
Intermediate to advanced
1256 pages
39h 14m
French
Content preview from Programmation iOS 14
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Chapitre 16. Vidéo
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La lecture vidéo s'effectue à l'aide de classes fournies par le cadre AV Foundation (import AVFoundation), telles que AVPlayer. Un AVPlayer n'est pas une vue ; le contenu d'un AVPlayer est rendu visible par une sous-classe CALayer, AVPlayerLayer, qui peut être ajoutée à l'interface de ton application. Une interface de lecture vidéo de l'AV Foundation peut être enveloppée dans un simple contrôleur de vue, AVPlayerViewController : tu fournis un AVPlayer, et l'AVPlayerViewController héberge automatiquement un AVPlayerLayer associé dans sa propre vue principale, fournissant des contrôles de transport de lecture standard pour que l'utilisateur puisse démarrer et arrêter la lecture, rechercher une image différente, etc. AVPlayerViewController est fourni par le cadre AVKit; tu auras besoin de import AVKit.
Une interface simple permettant à l'utilisateur de découper la vidéo (UIVideoEditorController) est également fournie. L'édition vidéo sophistiquée peut être réalisée en code grâce au cadre de la Fondation AV.
Si un lecteur AV produit du son, tu devras peut-être te préoccuper de la session audio de ton application ; voir le chapitre 15. Tu voudras certainement que la catégorie soit .playback. Le lecteur AVPlayer réagit avec élégance lorsque l'application est envoyée en arrière-plan : il se met en pause lorsque ton application est en arrière-plan ...
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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.