SwiftUI APIs are inherently declarative, yet many existing Apple platform APIs are designed to be used in a procedural manner. In this session, we'll explore how to design and implement SwiftUI-friendly declarative APIs that integrate with procedural frameworks. Using AVFoundation as an example, we will build a photo and video capture app while uncovering best practices for adapting procedural APIs to the declarative paradigm of SwiftUI. Speaker: Yoshimasa Niwa Developers from all over the world gather for tips and tricks and the latest case studies of development using Swift. Developers from all over the world will gather here. Swift and to showcase our Swift knowledge and skills, and to collaborate with each other, The event will be held for three days from April 9 - 11, 2025! Channel: https://www.youtube.com/@trySwiftConference X: https://twitter.com/tryswiftconf WebSite: https://tryswift.jp