How do I observe app lifecycle events in Combine with Swift?

In Swift, you can observe app lifecycle events using the Combine framework. By utilizing the NotificationCenter, you can listen to notifications related to app state changes (such as entering the background or becoming active). Below is an example of how to implement this.

import Combine import UIKit class AppLifecycleObserver { private var cancellables = Set() init() { NotificationCenter.default.publisher(for: UIApplication.didBecomeActiveNotification) .sink { _ in print("App has become active") } .store(in: &cancellables) NotificationCenter.default.publisher(for: UIApplication.didEnterBackgroundNotification) .sink { _ in print("App has entered background") } .store(in: &cancellables) NotificationCenter.default.publisher(for: UIApplication.willEnterForegroundNotification) .sink { _ in print("App will enter foreground") } .store(in: &cancellables) } }

Swift Combine App Lifecycle NotificationCenter SwiftUI iOS Development

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