Managing scenes in SwiftUI

On Apple platforms, a scene represents a part of an app's user interface, with a life cycle managed by the system. A single app may consist of multiple scenes, all of which can be running concurrently. With SwiftUI, we can use primitive scenes it provides, such as WindowGroup, together with custom scenes we create based on the Scene protocol. In this post, Majid Jabrayilov shows us how we can create custom scenes in SwiftUI, and how we can respond to app life cycle events.

Managing app in SwiftUI

Swift 5.3 introduces the @main attribute, used to designate a type as the entry point for program execution. Combining this feature with the new App and Scene protocols from SwiftUI allows us to manage an app's lifecycle with minimal code, without needing to rely on UIKit types such as UIApplicationDelegate. In this post, Majid Jabrayilov shows us how to implement common app lifecycle events using these new features.

SwiftUI’s New App Lifecycle and Replacements for AppDelegate and SceneDelegate in iOS 14

With iOS 14, it is now possible to build entire apps using only SwiftUI, avoiding the need to implement UIKit lifecycle protocols such as UIApplicationDelegate. This is made possible due to the introduction of new SwiftUI features such as the App protocol and SceneBuilder function builder. Here, Anupam Chugh shows us how we can leverage these new SwiftUI features to implement a SwiftUI app lifecycle.