The article explains how to configure background app refresh in a SwiftUI app. It covers enabling background capabilities in Xcode, registering task identifiers in Info.plist, scheduling a background task with BGAppRefreshTaskRequest and setting earliestBeginDate, registering a handler using the backgroundTask(.appRefresh) scene modifier, and testing the background fetch in Xcode using a private debug command to simulate a launch.
The article explains the evolution of onChange() from iOS 14 to iOS 17+. It covers the two new signatures, the initial parameter to trigger the action on first appear, the difference between View and Scene modifiers, and how to avoid blocking the main thread with async code.
Natalia has worked in startups and large companies across Europe and New Zealand, building web and mobile applications. Before joining Nil Coalescing, she was part of the core SwiftUI team at Apple, where she focused on designing and building SwiftUI APIs. She enjoys working with Swift and sharing her knowledge with the community. Natalia also writes books for Swift and SwiftUI developers.
