We can use DelegateProxy and DelegateProxyType to make beautiful delegate with RxSwift. But in some other cases, we can just create a custom class with PublishSubject.
This is how we can make rx out of UIApplication life cycle events
class LifeCycle { let didEnterBackground = PublishSubject<Void>() let willEnterForeground = PublishSubject<Void>() let didBecomeActive = PublishSubject<Void>() let willResignActive = PublishSubject<Void>() init() { let center = NotificationCenter.default let app = UIApplication.shared center.addObserver(forName: Notification.Name.UIApplicationDidEnterBackground, object: app, queue: .main, using: { [weak self] _ in self?.didEnterBackground.onNext(()) }) center.addObserver(forName: Notification.Name.UIApplicationWillEnterForeground, object: app, queue: .main, using: { [weak self] _ in self?.willEnterForeground.onNext(()) }) center.addObserver(forName: Notification.Name.UIApplicationDidBecomeActive, object: app, queue: .main, using: { [weak self] _ in self?.didBecomeActive.onNext(()) }) center.addObserver(forName: Notification.Name.UIApplicationWillResignActive, object: app, queue: .main, using: { [weak self] _ in self?.willResignActive.onNext(()) }) } } Usage
let lifeCycle = LifeCycle() lifeCycle.didBecomeActive .bindNext({ [weak self] in self?.viewModel.reloadProfile() }) .disposed(by: bag) 
Top comments (2)
Keep em coming Khoa Pham :D
@Eon Hi, thanks 😇 You have good posts too