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Flux for Android

Shohei Kawano
February 04, 2018

Flux for Android

This is the slide for DroidKaigi session "Flux: Utilize unidirectional data flow to think less and scale faster".

By utilizing a unidirectional data flow, we aim to think less and scale faster.

Shohei Kawano

February 04, 2018
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  1. Action View Dispatcher Store Action Creator • User Interface •

    Render based on Store’s state • Store subscriber • Has no states
  2. Action View Dispatcher Store Action Creator • Helper • Creates

    Actions • Passes Actions to Dispatcher • Has no states
  3. Action View Dispatcher Store Action Creator • Container • Created

    by ActionCreator • Dispatched by Dispatcher • Delivered to Store
  4. Action View Dispatcher Store Action Creator • Central Hub for

    all of the data flows • Dispatches Actions to Stores • Has no states
  5. Action View Dispatcher Store Action Creator • State manager •

    Changes its states and data only by receiving Actions • Has states / internal logic
  6. DRY

  7. class UserListActivity : BaseActivity() { private val binding by lazy

    { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) }
  8. class UserListActivity : BaseActivity() { private val binding by lazy

    { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) }
  9. <!—- activity_user_list.xml —-> <?xml version="1.0" encoding="utf-8"?> <layout … > <data>

    <import type="android.view.View"/> <variable name="isLoading" type="boolean" /> </data> … <android.support.v7.widget.RecyclerView android:id=“@+id/user_list" … /> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="@{isLoading ? View.VISIBLE : View.GONE}" … /> …
  10. class UserListActivity : BaseActivity() { private val binding by lazy

    { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) }
  11. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) }
  12. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var userListStore: UserListStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) } 1. Initialize View 2. Subscribe State 3. Call ActionCreator’s functions View 3 Steps in Activity / Fragment
  13. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var userListStore: UserListStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) } 1. Initialize View View
  14. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // Initialize View binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) }
  15. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // Initialize View binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) } View 2. Subscribe State
  16. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // Initialize View binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) } View 2. Subscribe “Loading” State
  17. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // Initialize View binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) // Subscribe State loadingStore.loadingState.autoDisposable(scope) .subscribe { binding.isLoading = it } }
  18. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // Initialize View binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) // Subscribe State loadingStore.loadingState.autoDisposable(scope) .subscribe { binding.isLoading = it } }
  19. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // initView() binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) // subscribeState() loadingStore.loadingState.autoDisposable(scope) .subscribe { binding.isLoading = it } }
  20. class UserListActivity : Activity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() } …
  21. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() } … View 3. Call ActionCreators’ functions
  22. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() // Create & Dispatch Action actionCreator.showUserList() } …
  23. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() // Create & Dispatch Action actionCreator.showUserList() } … View
  24. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() // Create & Dispatch Action actionCreator.showUserList() } … Action View Dispatcher Store Action Creator
  25. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() // Create & Dispatch Action actionCreator.showUserList() } … Action View Dispatcher Store Action Creator
  26. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() // Create & Dispatch Action actionCreator.showUserList() } … Action Creator
  27. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator Action View Dispatcher Store Action Creator
  28. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator Action View Dispatcher Store Action Creator
  29. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator
  30. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator
  31. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator
  32. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator
  33. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } LoadingAction Action
  34. Action @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private

    val api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } }
  35. Action sealed class LoadingAction(activity: Activity) { val activityKey: String =

    activity.componentName.className class Idle(activity: Activity) : LoadingAction(activity) class Loading(activity: Activity) : LoadingAction(activity) }
  36. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } UserListAction Action
  37. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action
  38. Action sealed class UserListAction { class ShowUserList(val userList: UserList) :

    UserListAction() class Error(val error: Throwable) : UserListAction() }
  39. Action sealed class UserListAction { class ShowUserList(val userList: UserList) :

    UserListAction() class Error(val error: Throwable) : UserListAction() } Action View Dispatcher Store Action Creator
  40. Action sealed class UserListAction { class ShowUserList(val userList: UserList) :

    UserListAction() class Error(val error: Throwable) : UserListAction() } Action View Dispatcher Store Action Creator
  41. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Action Creator
  42. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  43. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  44. Dispatcher class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex())

    .throwSubscriberException(BuildConfig.DEBUG) .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) }
  45. class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex()) .throwSubscriberException(BuildConfig.DEBUG)

    .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) } Dispatcher For Broadcasting Actions: • RxJava • EventBus … and more?
  46. Dispatcher class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex())

    .throwSubscriberException(BuildConfig.DEBUG) .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) } Action View Dispatcher Store Action Creator
  47. Dispatcher class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex())

    .throwSubscriberException(BuildConfig.DEBUG) .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) } Action View Dispatcher Store Action Creator
  48. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  49. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatch LoadingAction Dispatcher
  50. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  51. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  52. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  53. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  54. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store For Observing Lifecycle Events: • AAC: Lifecycle • RxLifecycle: Navi … and more? Store
  55. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  56. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  57. @PerActivity class LoadingStore @Inject constructor(private val activityKey: String, dispatcher: Dispatcher,

    navi: NaviComponent) { private val loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { … } Store
  58. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  59. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  60. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  61. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  62. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatch UserListAction Dispatcher
  63. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  64. @PerActivity class UserListActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi, private val activity: Activity) { fun showUserList() { dispatcher.dispatch(LoadingAction.Loading(activity)) api.fetchUserList().subscribeBy( onSuccess= { userList -> dispatcher.dispatch(UserListAction.ShowUserList(userList)) dispatcher.dispatch(LoadingAction.Idle(activity)) }, onError = { e -> dispatcher.dispatch(UserListAction.Error(e)) dispatcher.dispatch(LoadingAction.Idle(activity)) }) } } Dispatcher
  65. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  66. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  67. @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) { private

    val userList = ObservableArrayList<User> … fun addOnListChangedCallback(callback: ObservableList.OnListChangedCallback<ObservableList<User>>) { userList.addOnListChangedCallback(callback) } fun removeOnListChangedCallback(callback: ObservableList.OnListChangedCallback<ObservableList<User>>) { userList.removeOnListChangedCallback(callback) } Store
  68. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  69. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  70. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  71. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val listSubject = PublishSubject.create<List<User>>() val listState: Observable<List<User>> = listSubject.hide() init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { listSubject.onNext(action.userList.data) } } } } Action View Dispatcher Store Action Creator
  72. @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) { private

    val listSubject = PublishSubject.create<List<User>>() val listState: Observable<List<User>> = listSubject.hide() init { Streaming Loading State Change Using RxJava Store
  73. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  74. @PerActivity class LoadingStore @Inject constructor( … ) { private val

    loadingSubject = PublishSubject.create<Boolean>() val loadingState: Observable<Boolean> = loadingSubject.hide() init { … } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey == activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store
  75. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // initView() binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) // subscribeState() loadingStore.loadingState.autoDisposable(scope) .subscribe { binding.isLoading = it } } View
  76. class UserListActivity : BaseActivity() { @Inject lateinit var actionCreator: UserListActionCreator

    @Inject lateinit var loadingStore: LoadingStore @Inject lateinit var userListAdapter: UserListAdapter private val binding by lazy { DataBindingUtil.setContentView<ActivityUserListBinding>( this, R.layout.activity_user_list) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // initView() binding.fab.setOnClickListener { doSomething() } binding.userList.adapter = userListAdapter binding.userList.layoutManager = LinearLayoutManager(this) // subscribeState() loadingStore.loadingState.autoDisposable(scope) .subscribe { binding.isLoading = it } } View
  77. <!—- activity_user_list.xml —-> <?xml version="1.0" encoding="utf-8"?> <layout … > <data>

    <import type="android.view.View"/> <variable name="isLoading" type="boolean" /> </data> … <android.support.v7.widget.RecyclerView android:id=“@+id/user_list" … /> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="@{isLoading ? View.VISIBLE : View.GONE}" … /> …
  78. <!—- activity_user_list.xml —-> <?xml version="1.0" encoding="utf-8"?> <layout … > <data>

    <import type="android.view.View"/> <variable name="isLoading" type="boolean" /> </data> … <android.support.v7.widget.RecyclerView android:id=“@+id/user_list" … /> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="@{isLoading ? View.VISIBLE : View.GONE}" … /> …
  79. @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) { private

    val listSubject = PublishSubject.create<List<User>>() val listState: Observable<List<User>> = listSubject.hide() init { Streaming UserList Change Using Data Binding Store
  80. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { navi.addListener(Event.CREATE, { dispatcher.register(this)}) navi.addListener(Event.DESTROY, { dispatcher.unregister(this)}) } @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserListAction) { when (action) { is UserListAction.ShowUserList -> { userList.addAll(action.userList.data) } is UserListAction.Error -> { … } } …
  81. @PerActivity class UserListAdapter @Inject constructor( private val store: UserListStore, navi:

    NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { private val listChangeCallback = … init { navi.addListener(Event.CREATE, { store.addOnListChangedCallback(listChangeCallback) }) navi.addListener(Event.DESTROY, { store.removeOnListChangedCallback(listChangeCallback) }) } … View
  82. @PerActivity class UserListAdapter @Inject constructor( private val store: UserListStore, navi:

    NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { private val listChangeCallback = … init { navi.addListener(Event.CREATE, { store.addOnListChangedCallback(listChangeCallback) }) navi.addListener(Event.DESTROY, { store.removeOnListChangedCallback(listChangeCallback) }) } … View
  83. @PerActivity class UserListAdapter @Inject constructor( private val store: UserListStore, navi:

    NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { private val listChangeCallback = … init { navi.addListener(Event.CREATE, { store.addOnListChangedCallback(listChangeCallback) }) navi.addListener(Event.DESTROY, { store.removeOnListChangedCallback(listChangeCallback) }) } … View
  84. @PerActivity class UserListAdapter @Inject constructor( private val store: UserListStore navi:

    NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { private val listChangeCallback = … init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.binding.executePendingBindings() } override fun getItemCount() = store.userListSize … View
  85. @PerActivity class UserListAdapter @Inject constructor( private val store: UserListStore, navi:

    NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.binding.executePendingBindings() } … View
  86. @PerActivity class UserListAdapter @Inject constructor( private val userActionCreator: UserActionCreator, private

    val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.executePendingBindings() } … View
  87. @PerActivity class UserListAdapter @Inject constructor( private val userActionCreator: UserActionCreator, private

    val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.executePendingBindings() } … View
  88. @PerActivity class UserListAdapter @Inject constructor( private val userActionCreator: UserActionCreator, private

    val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.executePendingBindings() } … View
  89. @PerActivity class UserListAdapter @Inject constructor( private val userActionCreator: UserActionCreator, private

    val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.executePendingBindings() } … View
  90. @PerActivity class UserActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi) { fun favorite(user: User) { api.favorite(user.id).subscribeBy( onComplete = { dispatcher.dispatch(UserAction.Favorite(user.id)) }, … } } Action Creator
  91. @PerActivity class UserActionCreator @Inject constructor(private val dispatcher: Dispatcher, private val

    api: SomeApi) { fun favorite(user: User) { api.favorite(user.id).subscribeBy( onComplete = { dispatcher.dispatch(UserAction.Favorite(user.id)) }, … } } Action Creator
  92. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { … } … @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserAction) { when (action) { is UserAction.Favorite -> { userList.find { it.id == action.targetUserId }?.let { // Update or replace with new user } } } …
  93. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { … } … @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserAction) { when (action) { is UserAction.Favorite -> { userList.find { it.id == action.targetUserId }?.let { // Update or replace with new user } } } …
  94. @PerActivity class UserListAdapter @Inject constructor( private val userActionCreator: UserActionCreator, private

    val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { init { … } override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.executePendingBindings() } … View
  95. @PerActivity class UserListAdapter @Inject constructor( private val activityActionCreator: ActivityActionCreator, private

    val userActionCreator: UserActionCreator, private val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { … override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.root.setOnClickListener { activityActionCreator.startUserDetailActivity(user) } holder.binding.executePendingBindings() } … View
  96. @PerActivity class UserListAdapter @Inject constructor( private val activityActionCreator: ActivityActionCreator, private

    val userActionCreator: UserActionCreator, private val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { … override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.root.setOnClickListener { activityActionCreator.startUserDetailActivity(user) } holder.binding.executePendingBindings() } … View
  97. @PerActivity class UserListAdapter @Inject constructor( private val activityActionCreator: ActivityActionCreator, private

    val userActionCreator: UserActionCreator, private val store: UserListStore, navi: NaviComponent): RecyclerView.Adapter<RecyclerView.ViewHolder>() { … override fun onBindViewHolder( … ) { … holder.binding.user = store.getUserAt(position) holder.favIcon.setOnClickListener { userActionCreator.favorite(user) } holder.binding.root.setOnClickListener { activityActionCreator.startUserDetailActivity(user) } holder.binding.executePendingBindings() } … View
  98. @PerActivity class ActivityActionCreator @Inject constructor(private val activity: Activity) { fun

    startUserDetailActivity(user: User) { val intent = UserDetailActivity.createIntent(activity, user) activity.startActivity(intent) } fun start…Activity ( … ) { … } fun start…Activity ( … ) { … } } Action Creator
  99. class UserDetailActivity : BaseActivity() { @Inject lateinit var actionCreator: UserActionCreator

    @Inject lateinit var loadingStore: LoadingStore private val binding by lazy { DataBindingUtil.setContentView<ActivityUserDetailBinding>( this, R.layout.activity_user_detail) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() } … View
  100. class UserDetailActivity : BaseActivity() { @Inject lateinit var actionCreator: UserActionCreator

    @Inject lateinit var loadingStore: LoadingStore private val binding by lazy { DataBindingUtil.setContentView<ActivityUserDetailBinding>( this, R.layout.activity_user_detail) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) initView() subscribeState() } … View
  101. class UserDetailActivity : BaseActivity() { @Inject lateinit var actionCreator: UserActionCreator

    @Inject lateinit var loadingStore: LoadingStore private val binding by lazy { DataBindingUtil.setContentView<ActivityUserDetailBinding>( this, R.layout.activity_user_detail) } override fun onCreate(savedInstanceState: Bundle?) { initView() … } private fun initView() { binding.fab.setOnClickListener { userActionCreator.favorite(user) } } … View
  102. class UserDetailActivity : BaseActivity() { @Inject lateinit var actionCreator: UserActionCreator

    @Inject lateinit var loadingStore: LoadingStore private val binding by lazy { DataBindingUtil.setContentView<ActivityUserDetailBinding>( this, R.layout.activity_user_detail) } override fun onCreate(savedInstanceState: Bundle?) { initView() … } private fun initView() { binding.fab.setOnClickListener { userActionCreator.favorite(user) } } … View
  103. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { … } … @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserAction) { when (action) { is UserAction.Favorite -> { userList.find { it.id == action.targetUserId }?.let { // Update or replace with new user } } } …
  104. Store @PerActivity class UserListStore @Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {

    private val userList = ObservableArrayList<User> init { … } … @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserAction) { when (action) { is UserAction.Favorite -> { userList.find { it.id == action.targetUserId }?.let { // Update or replace with new user } } } …
  105. DRY

  106. 1. (Create & Dispatch LoadingAction) 2. Create & Dispatch Success

    / Error Action 3. (Create & Dispatch Idle Action) Steps in ActionCreator Action Creator
  107. @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: LoadingAction) { if (action.activityKey ==

    activityKey) { when (action) { is LoadingAction.Loading -> { loadingSubject.onNext(true) } is LoadingAction.Idle -> { loadingSubject.onNext(false) } … Store When given action is Loading, then the next loading state is “true”, if the action is Idle, then “false”.
  108. Store @Subscribe(threadMode = ThreadMode.MAIN) fun on(action: UserAction) { when (action)

    { is UserAction.Favorite -> { userList.find { it.id == action.targetUserId }?.let { // Update or replace with new user } } } … When given action is User’s Favorite Action, then find target user from user list and update as favorited (if there is).
  109. Dispatcher class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex())

    .throwSubscriberException(BuildConfig.DEBUG) .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) } Action View Dispatcher Store Action Creator
  110. Dispatcher class Dispatcher { private val eventBus = EventBus.builder() .addIndex(DispatcherIndex())

    .throwSubscriberException(BuildConfig.DEBUG) .build() fun dispatch(event: Any) { eventBus.post(event) } fun register(observer: Any) { eventBus.register(observer) } fun unregister(observer: Any) { eventBus.unregister(observer) } Action View Dispatcher Store Action Creator