You're reading from An iOS Developer's Guide to SwiftUI

Product typeBook

Published inMay 2024

Reading LevelBeginner

PublisherPackt

ISBN-139781801813624

Edition1st Edition

Languages

Swift

Concepts

UI Development

Author (1)

Michele Fadda

iOS 17 changes in state management

State management is related to architecture in SwiftUI applications as, in a SwiftUI application, you need to bind state changes to the UI, as SwiftUI is declarative and does not have “methods” that you can call to determine changes in the UI. These changes need to be achieved by declaration and state binding. SwiftUI will automatically redraw the views affected by the changes in the underlying data.

With iOS 17 and Xcode 15, presented during the WWDC2023 conference, Apple introduced some variations to all the binding mechanisms we have just examined: @Observable is used rather than ObservableObject, while we are expected to use @Bindable to mark individual properties we would want to be able to bind. @Bindable usage is limited to classes marked as @Observable. If you deliberately want to avoid observing a property, you can use ObservationIgnored to mark that specific property.

The @Observable property wrapper is the easiest way...

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An iOS Developer's Guide to SwiftUI

Published in: May 2024Publisher: PacktISBN-13: 9781801813624

Author (1)

Michele Fadda

Michele is currently working as a technical project and program manager at Eggon, an innovative startup in Padua, Italy, and as the director of FWLAB Limited, a UK App development studio. He specializes in skills such as Imperative Programming, Functional programming, Swift, Mobile Application Development. He started programming as a child with Assembly language and has worked for 20 years as a consultant using a variety of languages and technologies. He started developing for iOS with iOS on iOS v.3.0 in 2009. He has also developed many apps as a solo developer and has also participated in numerous projects.
Read more about Michele Fadda

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iOS 17 changes in state management

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