RxSwiftのメモ。 Step1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 import RxSwift import RxCocoa final class MainModel { private let subModel = SubModel() init() { } func turnOn() { self.subModel.turnOn() } } final class SubModel { private var logic1Subject: PublishSubject<Bool> = PublishSubject<Bool>() private var logic2Subject: PublishSubject<Bool> = PublishSubject<Bool>() private let disposeBag = DisposeBag() init() { self.hoge() } func turnOn() { self.logic1Subject.onNext(true) } func turnOff() { self.logic1Subject.onNext(false) } private func hoge() { self.logic1Subject.subscribe { (event) in print("hoge") }.disposed(by: self.disposeBag) } } MainModelのturnOnを呼び出すと、コンソールログにhogeと出るはずです。